Mitsubishi Electric PURY-P120Y(T)HMU-A Service Handbook Download Page 194 | Manualshive

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[

IX

Troubleshooting ]

- 185 -

HWE0803A

GB

1. Error

Code

Low pressure fault

2. Error definition and error detection method

When starting the compressor from Stop Mode for the first time if low pressure reads 0.098MPa [14psi] immediately before
start-up, the operation immediately stops.

3. Cause, check method and remedy

1301

Cause

Check method and remedy

(1)

Inner pressure drop due to a leakage.

Refer to the section on troubleshooting the low pressure
sensor.(page 274)

(2)

Low pressure sensor failure

(3)

Short-circuited pressure sensor cable due to
torn outer rubber

(4)

A pin on the male connector is missing.

(5)

Disconnected wire

(6)

Failure of the low pressure input circuit on the
controller board

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Summary of Contents for PURY-P120Y(T)HMU-A

Page 1: ......

Page 2: ...or fixed cables may produce heat and start a fire Take appropriate safety measures against strong winds and earthquakes to prevent the unit from falling If the unit is not installed properly the unit may fall and cause serious injury to the person or damage to the unit Do not make any modifications or alterations to the unit Consult your dealer for repair Improper repair may result in water leakag...

Page 3: ...er leakage electric shock and or fire After completing the service work check for a gas leak If leaked refrigerant is exposed to a heat source such as a fan heater stove or electric grill poisonous gases may be produced Do not try to defeat the safety features of the unit Forced operation of the pressure switch or the temperature switch by defeating the safety features of these devices or the use ...

Page 4: ...igerant is charged into the system the com position of the refrigerant in the cylinder will change and may result in performance loss Use a vacuum pump with a reverse flow check valve If a vacuum pump that is not equipped with a reverse flow check valve is used the vacuum pump oil may flow into the refrigerant cycle and cause the refrigerating machine oil to deteriorate Prepare tools for exclusive...

Page 5: ...quently Doing so may lead to a re markable drop in performance electric shock malfunc tions smoke and or fire The presence of organic solvents or corrosive gas i e ammonia sulfur compounds and acid may cause gas leakage or water leakage When installing the unit in a hospital take appropriate measures to reduce noise interference High frequency medical equipment may interfere with the normal operat...

Page 6: ...ires or copper wires may result in malfunctions smoke and or fire Do not spray water on the air conditioner or immerse the air conditioner in water Otherwise electric shock and or fire may result When handling units always wear protective gloves to protect your hands from metal parts and high tempera ture parts Periodically check the installation base for damage If the unit is left on a damaged pl...

Page 7: ...of the unit such as pipes and compressor may be either very cold or hot depending on the state of the refrigerant in the unit at the time To reduce the risk of frost bites and burns do not touch these parts with bare hands Do not operate the unit without panels and safety guards Rotating high temperature or high voltage parts on the unit pose a risk of burns and or electric shock Do not turn off t...

Page 8: ... the Outdoor Unit 60 3 Outdoor Unit Circuit Board 64 4 BC Controller Components 74 5 Control Box of the BC Controller 77 6 BC Controller Circuit Board 78 IV Remote Controller 1 Functions and Specifications of MA and ME Remote Controllers 83 2 Group Settings and Interlock Settings via the ME Remote Controller 84 3 Interlock Settings via the MA Remote Controller 88 4 Using the built in Temperature S...

Page 9: ...on of Transmission Wave Shape Noise 270 4 Troubleshooting Principal Parts 273 5 Refrigerant Leak 314 6 Compressor Replacement Instructions 316 7 Servicing the BC controller 327 8 Troubleshooting Using the Outdoor Unit LED Error Display 330 X LED Monitor Display on the Outdoor Unit Board 1 How to Read the LED on the Service Monitor 333 ...

Page 10: ...Materials 5 4 Storage of Piping 7 5 Pipe Processing 7 6 Brazing 8 7 Air Tightness Test 9 8 Vacuum Drying Evacuation 10 9 Refrigerant Charging 12 10 Remedies to be taken in case of a Refrigerant Leak 12 11 Characteristics of the Conventional and the New Refrigerants 13 12 Notes on Refrigerating Machine Oil 14 ...

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Page 12: ...use of tools page 4 5 Verification of the connecting pipes Verify the type of refrigerant used for the unit to be moved or replaced Use refrigerant pipes made of phosphorus deoxidized copper Keep the inner and outer surfaces of the pipes clean and free of such contaminants as sulfur oxides dust dirt shaving particles oil and water These types of contaminants inside the refrigerant pipes may cause ...

Page 13: ...he refrigerant type is indicated The cylinder is pink Charging Port on the Refrigerant Cylinder Refrigerant charging The charge port diameter is larger than that of the current port Flare Nut Connection of the unit with the pipes Use Type 2 Flare nuts Tools Materials Use Notes Gas Leak Detector Gas leak detection The ones for use with HFC refrigerant may be used Vacuum Pump Vacuum drying May be us...

Page 14: ...use pipes that are made with 1 2H material Drawn unless the pipe diameter is at least ø19 05 3 4 and the radial thickness is at least 1 2t The figures in the radial thickness column are based on the Japanese standards and provided only as a reference Use pipes that meet the local standards O material Annealed Soft copper pipes annealed copper pipes They can easily be bent with hands 1 2H material ...

Page 15: ...of the pipes must be between 1 0 and 1 5 mm For margin adjustment a copper pipe gauge is necessary 6 Flare nut The flare nut type has been changed to increase the strength The size of some of the flare nuts have also been changed The figures in the radial thickness column are based on the Japanese standards and provided only as a reference Use pipes that meet the local standards Flare processing d...

Page 16: ...brazing Keep elbow pipes and T joints in plastic bags The new refrigerator oil is 10 times as hygroscopic as the conventional refrigerating machine oil such as Suniso and if not handled with care could easily introduce moisture into the system Keep moisture out of the pipes for it will cause the oil to deteriorate and cause a compressor failure 5 Pipe Processing Use a small amount of ester oil eth...

Page 17: ...pper pipes or between a copper pipe and copper coupling If installed refrigerant pipes are not immediately connected to the equipment then braze and seal both ends 2 Reasons The new refrigerating machine oil is 10 times as hygroscopic as the conventional oil and is more likely to cause unit failure if water infiltrates into the system Flux generally contains chloride Residual flux in the refrigera...

Page 18: ...ount Refrigerant R410A must be charged in its liquid state vs gaseous state 2 Reasons Oxygen if used for an air tightness test poses a risk of explosion Only use nitrogen to check air tightness Refrigerant R410A must be charged in its liquid state If gaseous refrigerant in the cylinder is drawn out first the composition of the remaining refrigerant in the cylinder will change and become unsuitable...

Page 19: ...rough vacuum drying re moves moisture in the pipes Verify that the vacuum degree has not risen by more than 1Torr 130Pa 1hour after evacuation A rise by less than 1Torr 130Pa is acceptable If the vacuum is lost by more than 1Torr 130Pa conduct evacuation following the instructions in section 6 Special vacuum drying 5 Procedures for stopping vacuum pump To prevent the reverse flow of vacuum pump oi...

Page 20: ... through the check joints at the refrigerant service valve on the high and low pressure sides BV1 and 2 and also through the check joints on the high and low pressure sides CJ1 and 2 To evacuate air only from the outdoor units Apply a vacuum through the check joints on the high and low pressure sides CJ1 and 2 To evacuate air from the indoor units and extension pipes Apply a vacuum through the che...

Page 21: ...ge and be come unsuitable for use 2 Notes When using a cylinder with a siphon refrigerant is charged in the liquid state without the need for turning it upside down Check the type of the cylinder on the label before use 10 Remedies to be taken in case of a Refrigerant Leak If the refrigerant leaks out it may be replenished The entire refrigerant does not need to be replaced Charge refrigerant in t...

Page 22: ...laced 3 Pressure characteristics The pressure in the system using R410A is 1 6 times as great as that in the system using R22 New Refrigerant HFC type Conventional Refriger ant HCFC type R410A R407C R22 R32 R125 R32 R125 R134a R22 Composition wt 50 50 23 25 52 100 Type of Refrigerant Pseudo azeotropic Refrigerant Non azeotropic Refrigerant Single Refrigerant Chloride Not included Not included Incl...

Page 23: ...nants is defined as moisture air processing oil dust dirt wrong types of refrigerant and refrigerating machine oil Cause Symptoms Effects on the refrigerant cycle Water infiltration Frozen expansion valve and capillary tubes Clogged expansion valve and capillary tubes Poor cooling performance Compressor overheat Motor insulation failure Burnt motor Coppering of the orbiting scroll Lock Burn in on ...

Page 24: ...ress Settings 19 4 Sample System Connection 25 5 An Example of a System to which an MA Remote Controller is connected 26 6 An Example of a System to which an M NET Remote Controller is connected 38 7 An Example of a System to which both MA Remote Controller and M NET Remote Controller are connected 40 8 Restrictions on Pipe Length 43 ...

Page 25: ... 16 ...

Page 26: ... the capacity of the outdoor unit the indoor units will not be able to perform at the rated capacity when they are operated simultaneously Select a combination of units so that the total capacity of the connected indoor units is at or below the capacity of the outdoor unit whenever possible Outdoor units Composing units Maximum total capacity of connectable indoor units Maximumnumber of connectabl...

Page 27: ...o which both MA Remote Controller and M NET Remote Controller are connected before performing wiring work Types and maximum allowable length of cables Control lines are categorized into 2 types transmission line and remote controller line Use the appropriate type of cables and observe the maximum allowable length specified for a given system If a given system has a long transmission line or if a n...

Page 28: ...line 2 The outdoor units in the same refrigerant circuit are automatically designated as OC and OS in the order of capacity from large to small if two or more units have the same capacity in the order of address from small to large 3 Turn off the power to all the outdoor units in the same refrigerant circuit MA remote controller 1 M NET remote controller 2 Cable type Type VCTF VCTFK CVV CVS VVR VV...

Page 29: ... to all indoor units 00 M NET re mote con troller Main remote controller RC 101 to 150 Add 100 to the smallest address of all the indoor units in the same group 101 Sub remote controller RC 151 to 200 3 Add 150 to the smallest address of all the indoor units in the same group MA remote controller MA No address settings required The main sub setting must be made if 2 remote controllers are connecte...

Page 30: ...door unit of the All Fresh Models is ON 2 When an optional temperature sensor is used set SW1 1 to OFF and set SW3 8 to ON When using an optional temperature sensor install it where room temperature can be detected System configura tion Connection to the system con troller Powersupplyunit for transmission lines Group operation of units in a sys tem with multiple outdoor units Power supply switch c...

Page 31: ...nction Operation of the indoor unit when the operation is resumed after the unit was stopped Setting SW1 4 5 9 10 Power ON OFF by the plug 1 2 3 Indoor unit will go into operation regardless of its operation status before power off power failure In approx 5 minutes OFF ON Automatic restoration after power failure Indoor unit will go into operation if it was in operation when the power was turned o...

Page 32: ...rating current 0 1A Minimum applicable load 1mA at DC Relay circuit 3 CN3N 2 Optional part PAC SC36NA E or field supply Preparations in the field OFF Cooling ON Heating Normal Y OFF ON X Contact rating voltage DC15V Contact rating current 0 1A Minimum applicable load 1mA at DC X Cooling Heating Y Validity Invalidity of X X Y Relay CN3N X Y Relay circuit Adapter 2 Outdoor unit control board Maximum...

Page 33: ...the outdoor unit whose SW4 4 is set to ON CN3D 1 3P Compressor ON OFF 1 Open Compressor ON Short circuit Compressor OFF CN3D 1 2P Low noise mode 2 Open OFF Short circuit ON CN3D 1 2P CN3D 1 3P Open Short circuit Open 100 No DEMAND 75 Short circuit 0 Compressor OFF 50 8 levels of on DEMAND No 2 CN3D 1 2P Open Short circuit No 1 CN3D 1 2P 1 3P Open Short circuit Open Short circuit Open Open 100 50 8...

Page 34: ...NAY units 3 Grouping of units in a system with multiple outdoor units NO Manual address setup 4 System with one out door unit With connection to transmission line for centralized control Manual address setup 5 System with one out door unit With connection to indoor outdoor transmission line Manual address setup 6 System with one out door unit With connection to transmission line for centralized co...

Page 35: ... 2 LOSSNAY units to indoor units in the same system refer to the next section 5 2 An example of a system with one outdoor unit to which 2 or more LOSSNAY units are connected 3 Maximum allowable length 1 Indoor outdoor transmission line Maximum distance 1 25mm2 AWG16 or larger L1 L2 L3 L4 L5 200m 656ft L1 L2 L3 L11 L12 L13 200m 656ft 2 Transmission line for centralized control No connection is requ...

Page 36: ...en connect terminals 1 and 2 on the terminal block TB15 on the in door unit on one end to the terminal block on the MA re motecontroller Non polarized two wire When performing a group operation of indoor units that have different functions Automatic indoor outdoor ad dresssetup is not available 4 LOSSNAY connection Connect terminals M1 and M2 on the terminal block TB5 on the indoor unit IC to the ...

Page 37: ...le length 1 Indoor outdoor transmission line Same as 5 1 2 Transmission line for centralized control No connection is required 3 MA remote controller wiring Same as 5 1 L3 BC 53 OC 51 TB7 S TB3 TB02 S IC TB5 S TB15 1 2 01 IC TB5 S TB15 1 2 02 A1 B2 MA A1 B2 MA LC TB5 S 05 IC TB5 S 1 2 TB15 IC TB5 S TB15 1 2 04 03 LC TB5 S 06 A1 B2 MA If the BC address overlaps any of the addresses that are assigne...

Page 38: ...e capacities are the same Proce dures Unit or controller Address setting range Setting method Notes Fac tory set ting 1 Indoor unit Main unit IC 01 to 50 Assign the smallest address to the main unit in the group In a system with a sub BC controller make the settings for the indoor units in the following order i Indoor unit to be connected to the main BC controller ii Indoor unit to be connected to...

Page 39: ...ted from the above mentioned system two additional indoor units can be connected 3 Maximum allowable length 1 Indoor outdoor transmission line Maximum distance 1 25mm2 AWG16 or larger L11 L12 200m 656ft L21 L22 200m 656ft 2 Transmission line for centralized control Maximum line distance via outdoor unit 1 25mm2 AWG16 or larger L12 L31 L22 500m 1640ft L11 L31 L21 500m 1640ft 3 MA remote controller ...

Page 40: ...in unit IC 01 to 50 Assign the smallest address to the main unit in the group In a system with a sub BC controller make the settings for the indoor units in the following order i Indoor unit to be connected to the main BC controller ii Indoor unit to be connected to sub BC controller 1 iii Indoor unit to be connected to sub BC controller 2 Make the settings for the indoor units in the way that the...

Page 41: ...r supply unit is connected to the transmission line for centralized control leave the power jumper connec tor on CN41 as it is factory setting 3 Maximum allowable length 1 Indoor outdoor transmission line Same as 5 3 2 Transmission line for centralized control Maximum line distance via outdoor unit 1 25mm2 AWG16 or larger L32 L31 L12 L11 500m 1640ft L32 L22 L21 500m 1640ft L12 L11 L31 L22 L21 500m...

Page 42: ...ircuit are automatically designated as OC and OS They are designated as OC and OS in the descending order of capacity ascending order of address if the capacities are the same Proce dures Unit or controller Ad dress setting range Setting method Notes Fac tory set ting 1 Indoor unit Main unit IC 01 to 50 Assign the smallest address to the main unit in the group In a system with a sub BC controller ...

Page 43: ...nsmission boosters that is required by the system with three BC controllers For each BC con troller that is subtracted from the above mentioned system two ad ditional indoor units can be connected 3 Maximum allowable length 1 Indoor outdoor transmission line Maximum distance 1 25mm2 AWG16 or larger L11 L12 200m 656ft L21 L22 200m 656ft L25 200m 656ft 2 Transmission line for centralized control Max...

Page 44: ...od Interlock setting from the remote controller is required if the ON OFF remote controller alone is con nected 5 Switch setting Address setting is required as follows 5 Address setting method The outdoor units in the same refrigerant circuit are automatically designated as OC and OS They are designated as OC and OS in the descending order of capacity ascending order of address if the capacities a...

Page 45: ...22 200m 656ft 2 Transmission line for centralized control Maximum line distance via outdoor unit 1 25mm2 AWG16 or larger L32 L31 L12 L11 500m 1640ft L32 L22 L21 500m 1640ft L12 L11 L31 L22 L21 500m 1640ft 3 MA remote controller wiring Maximum overall line length 0 3 to 1 25mm2 AWG22 to 16 m1 200m 656ft m2 m3 200m 656ft L11 L21 OC TB3 TB7 S 51 L31 A B S L32 OS1 TB3 TB7 M1M2 S 52 OC TB3 TB7 S 54 OS1...

Page 46: ... LM adapter alone is connected 5 Switch setting Address setting is required as follows 5 Address setting method The outdoor units in the same refrigerant circuit are automatically designated as OC and OS They are designated as OC and OS in the descending order of capacity ascending order of address if the capacities are the same Pro ce du res Unit or controller Address setting range Setting method...

Page 47: ...trol Same as 5 4 3 M NET remote controller wiring Maximum overall line length 0 3 to 1 25mm2 AWG22 to 16 m1 10m 32ft m2 m3 10m 32ft If the standard supplied cable must be extended use a cable with a diameter of 1 25mm2 AWG16 The section of the cable that exceeds 10m 32ft must be included in the maximum indoor outdoor transmission line distance described in 1 When connected to the terminal block on...

Page 48: ...ii iii is true Port number setting is required To perform a group op eration of indoor units that have different func tions set the indoor unit in the group with the greatest number of functions as the main unit 00 Sub unit Assign sequential numbers starting with the address of the main unit in the same group 1 Main unit address 1 main unit address 2 main unit address 3 etc 2 LOSSNAY LC 01 to 50 A...

Page 49: ...red by the system with three BC control lers For each BC controller that is subtracted from the above mentioned system two additional indoor units can be connected 10 When a power supply unit is connected to the transmis sion line for centralized control leave the power jumper connector on CN41 as it is factory setting 3 Maximum allowable length 1 Indoor outdoor transmission line Same as 5 3 2 Tra...

Page 50: ...5 4 Shielded cable connection Same as 5 4 3 MA remote controller wiring When 2 remote controllers are connected to the sys tem Group operation of indoor units Same as 5 1 4 M NET remote controller wiring When 2 remote controllers are connected to the sys tem Group operation of indoor units Same as 6 5 LOSSNAY connection Same as 5 4 6 Switch setting Address setting is required as follows ...

Page 51: ...ress higher than those of the indoor units that are connected to the MA remote controller Make the initial settings for the indoor unit group settings via the system con troller To perform a group operation of indoor units that have different functions des ignate the indoor unit in the group with the greatest number of functions as the main unit Port number setting is required Addresses that are a...

Page 52: ...its of P144 model or above Branch joint CMY Y102S G2 Indoor Indoor Indoor Indoor P06 P54 models P72 or P96 models Maximum of 3 units per port Total capacity of P54 or below Unit m ft Operation Pipe sections Allowable length of pipes Length Total pipe length A B a b c d Refer to the restrictions on the total piping length in the graph on the next page Total pipe length from the outdoor unit to the ...

Page 53: ...ht difference and the pipe length between BC controller and indoor units Restrictions on pipe length PURY P72 P96THMU A PURY P72 P96YHMU A 1000 900 800 700 600 500 400 300 200 10 20 30 40 50 60 70 80 90 100 110 Aggregate length of all pipes m ft Pipe length between outdoor unit and BC controller m ft 32 64 98 131 164 196 229 262 295 328 360 3280 2952 2624 2296 1968 1640 1312 984 656 32 16 32 49 64...

Page 54: ...s in the figure titled Restrictions on pipe length below Except the P96 models Height differ ence Between indoor and outdoor units Outdoor unit above in door unit H 50 164 or less Outdoor unit below in door unit H 40 131 or less Between indoor unit and BC controller h1 15 49 10 32 or less 2 2 When the capacity of the connected indoor units is P72 or above use the figures in the parentheses as a re...

Page 55: ...rature via the connected remote controller and when connecting multiple remote controllers configure these controllers as a group by making appropriate settings These indoor units can only be operated in the same mode 7 The maximum capacity of the indoor units that is connectable to the CMB P NU GB types of sub BC controllers is P126 or below when two GB type controllers are connected P126 or belo...

Page 56: ...controller h1 15 49 10 32 or less 2 2 When the capacity of the connected indoor units is P72 or above use the figures in the parentheses as a reference Between indoor units h2 15 49 10 32 or less 2 Between the BC controller main or sub and the sub BC controller h3 15 49 or less Between outdoor units h4 0 1 0 3 or less h1 h3 h1 h2 f D E e Branch joint CMY R100VBK The distributor on the low pressure...

Page 57: ... DIP SW4 6 is OFF 5 Do not connect the P72 or P96 models of indoor units and other models of indoor units at the same port 6 Note the following when connecting multiple indoor units to a single port Those indoor units connected to the same port must be installed in the same room Set the indoor temperature via the connected remote controller and when connecting multiple remote controllers configure...

Page 58: ...ntroller and farthest indoor unit m ft 32 16 32 49 64 98 131 164 196 229 110 1000 900 800 700 600 500 400 300 200 10 20 30 40 50 60 70 80 90 100 Pipe length between outdoor unit and BC controller m ft 32 64 98 131 164 196 229 262 295 328 360 3280 2952 2624 2296 1968 1640 1312 984 656 110 1000 900 800 700 600 500 400 300 200 10 20 30 40 50 60 70 80 90 100 Pipe length between outdoor unit and BC con...

Page 59: ...pipe Low pressure pipe High pressure pipe 72 ø19 05 3 4 ø15 88 5 8 ø19 05 3 4 ø15 88 5 8 96 ø22 2 7 8 ø19 05 3 4 ø22 2 7 8 ø19 05 3 4 120 ø28 58 1 1 8 ø28 58 1 1 8 144 ø22 2 7 8 ø22 2 7 8 168 192 216 ø28 58 1 1 8 ø28 58 1 1 8 240 Unit mm inch Indoor unit Refrigerant pipe size Indoor unit connection Flare connection for all models Liquid pipe Gas pipe Liquid pipe Gas pipe P06 P08 P12 P15 P18 ø6 35 ...

Page 60: ...Y P120YHMU A ø28 58 1 1 8 Brazed connection Indoor unit side ø9 52 3 8 Flare connection ø15 88 5 8 Flare connection Indoor Indoor Indoor Indoor Indoor Indoor BC controller Maximum of 3 units per port Total capacity of P30 or below All units connected to the same port must be in the same operating mode Branch joint Model name CMY Y102S G2 Optional accessory 2 Junction pipe kit Model name CMY R160 J...

Page 61: ...essory Refrigerant pipe selection size of the pipes A and B in the previous page Select the proper size pipes based on the total capacity of the downstream indoor units using the table below as a reference Unit mm inch Total capacity of indoor units Liquid pipe Gas pipe P54 or below ø9 52 3 8 ø15 88 5 8 P55 P72 ø9 52 3 8 ø19 05 3 4 P73 P96 ø9 52 3 8 ø22 2 7 8 Liquid pipe side 6 35 1 4 ID Gas pipe ...

Page 62: ...otal capacity of indoor units Liquid pipe Gas pipe P54 or below ø9 52 3 8 ø15 88 5 8 P55 P72 ø9 52 3 8 ø19 05 3 4 P73 P96 ø9 52 3 8 ø22 2 7 8 Unit mm inch Operation Pipe sections High pressure side Liquid Low pressure side Gas Outdoor unit side PURY P72THMU A PURY P72YHMU A ø15 88 5 8 Brazed connection ø19 05 3 4 Brazed connection PURY P96THMU A PURY P96YHMU A ø19 05 3 4 Brazed connection ø22 2 7 ...

Page 63: ...ing the table below as a reference Unit mm inch Total capacity of indoor units Liquid pipe Gas pipe P54 or below ø9 52 3 8 ø15 88 5 8 P55 P72 ø9 52 3 8 ø19 05 3 4 P73 P96 ø9 52 3 8 ø22 2 7 8 Unit mm inch Operation Pipe sections High pressure side liquid Low pressure side gas Liquid pipe side Total capacity of the in door units that are con nected to the BC controller On the BC controller side P72 ...

Page 64: ... Components 1 Outdoor Unit Components and Refrigerant Circuit 57 2 Control Box of the Outdoor Unit 60 3 Outdoor Unit Circuit Board 64 4 BC Controller Components 74 5 Control Box of the BC Controller 77 6 BC Controller Circuit Board 78 ...

Page 65: ... 56 ...

Page 66: ...HWE0803A GB III Outdoor Unit Components 1 Outdoor Unit Components and Refrigerant Circuit 1 Front view of a outdoor unit 1 PURY P72 P96 P120THMU A PURY P72 P96 P120YHMU A Fan Control Box Fan guard Fin guard Front panel Heat exchanger ...

Page 67: ...arator O S High pressure check joint CJ1 Low pressure check joint CJ2 Refrigerant service valve on the low pressure side BV1 Solenoid valve SV5c Refrigerant service valve on the high pressure side BV2 Check valve block assembly CV2a Check valve CV4a Check valve CV3a Check valve CV6a Check valve CV10a Check valve CV9a Check valve CV8a Solenoid valve SV5b Solenoid valve block SV4a SV4b SV4d Check va...

Page 68: ...Check valve block assembly CV2a Solenoid valve SV5b Check valve CV4a Check valve CV8a Check valve CV9a Check valve CV10a Check valve CV3a Check valve CV6a Solenoid valve block SV4a SV4b SV4c SV4d Check valve CV5a Solenoid valve SV9 4 way valve 21S4a Check valve CV7a High pressure sensor 63HS1 Transformer box YHMU A only Low pressure sensor 63LS Solenoid valve SV2 Solenoid valve SV1a Accumulator AC...

Page 69: ... closing the front panel of the control box do not let it come into contact with any of the internal components Before inspecting the inside of the control box turn off the power keep the unit off for at least 10 minutes and Check that the voltage across terminals FT P and FT N YHMU on the INV board or the voltage at both ends of the main capacitor C1 THMU is 20VDC or below It takes about 10 minut...

Page 70: ...onents 2 Faston terminals have a locking function Make sure the cable heads are securely locked in place Press the tab on the ter minals to remove them Current sensor ACCT3 Note 2 Fan board INV board Control board DC reactor DCL Diode stack Noise filter Current sensor DCCT1 Terminal block for power supply TB1 Ground terminal Smoothing capacitor C1 Note 1 Current sensor ACCT2 Current sensor ACCT1 I...

Page 71: ...n damage to its internal components 2 Faston terminals have a locking function Make sure the cable heads are securely locked in place Press the tab on the ter minals to remove them INV board Terminal block for power supply TB1 Noise filter DC reactor DCL Electromagnetic relay 72C Capacitor C100 Rush current protection resistor R1 R5 Note 2 Fan board Control board M NET board Terminal block for tra...

Page 72: ... III Outdoor Unit Components 63 HWE0803A GB 4 Transformer Box PURY P72 P96 P120Y T HMU A Transformer T03 Transformer T02 ...

Page 73: ...GND Output 5VDC Power supply detection input Power supply ON OFF signal output CNS2 Transmission line input output for centralized control system 30VDC CN41 Power supply for centralized control OFF CN40 Power supply for centralized control ON CN102 Indoor outdoor transmission line input output 30VDC Power supply input for centralized control system 30VDC External signal input contact input F01 Fus...

Page 74: ...put 5VDC Power supply detection output Power supply ON OFF signal input LED1 Power supply for indoor transmission line TP1 2 Check pins for indoor outdoor transmission line TB7 Terminal block for transmission line for centralized control TB3 Indoor outdoor transmission block Ground terminal for transmission line Grounding Grounding CN04 Bus voltage input YHMU only Bus voltage output THMU only P N ...

Page 75: ...tput 5VDC LED1 Lit Inverter in normal operation Blink Inverter error CN4 GND INV Boar Serial communication signal output CNDC Bus voltage output P N CN2 Serial communication signal output GND Input 17VDC SC V Inverter output V SC W Inverter output W CT22 Current sensor W SC U Inverter output U CT12 Current sensor U SC R Input L1 SC S Input L2 SC T Input L3 CT3 Current sensor L3 TB N Note Bus volta...

Page 76: ... CPU operation SW1 ON No load operation setting OFF Normal setting Fixed to OFF CN5V GND Output 5VDC CN2 Serial communication CN4 GND Fan board Serial communication LED3 Lit while charging CNFG Functional earth F02 Fuse 250VAC 3 15A CNDC3 BUS voltage output P N CNDC2 BUS voltage input P N CNDC1 BUS voltage output P N IPM driving power supply output and signal output IPM N BUS voltage input output ...

Page 77: ...tage check terminal P Note Bus voltage check terminal N Note 1 SC P2 Bus voltage Input P SC P1 Rectifier diode output P LED1 Lit Inverter in normal operation Blink Inverter error CN6 Open No load operation setting Short circuited Normal setting CN5V GND Output 5VDC RSH1 Overcurrent detection resistor CN4 GND INV Board Serial communication signal output CN2 Serial communication signal output GND In...

Page 78: ...on signal output GND Control board Serial communication signal output CN22 GND INV board Input 5VDC Serial communication signal input GND INV board Input 17VDC CN21 Serial communication signal output GND INV board Input 17VDC THBOX Thermistor Control box internal temperature detection LED1 Inverter in normal operation LED2 Inverter error DIP IPM Rear CNINV Inverter output W V U R630 Overcurrent de...

Page 79: ...unication signal output CN5 GND Control board Serial communication signal output CN21 Serial communication signal output GND INV board Input 17VDC CN22 GND INV board Input 5VDC Serial communication signal input GND INV board Output 17VDC THBOX Thermistor Control box internal temperature detection LED1 Inverter in normal operation LED2 Inverter error DIP IPM Rear R630 R631 Overcurrent detection res...

Page 80: ... Unit Components 71 HWE0803A GB 5 Noise Filter 1 PURY P72THMU A Grounding TB21 Input output L1 CN02 Output L1 L2 TB22 Input output L2 TB23 Input output L3 CN01 Input L3 L2 L1 F1 Fuse 250VAC 6 3A F2 Fuse 250VAC 6 3A ...

Page 81: ...rotection resistor TB42 Bus voltage output N TB31 Bus voltage output P CN03 72C drive input Electromagnetic relay 72C Diode stack rectified voltage input Diode stack output Output Diode stack input TB23 Input L3 TB22 Input L2 TB21 Input L1 CN01 Input L3 L2 L1 F2 Fuse 250VAC 6 3A F1 Fuse 250VAC 6 3A CN02 Output L1 L2 ...

Page 82: ...L2 L3 current P N CN5 Output Rectified L2 L3 current P N TB21 Input output L1 TB22 Input output L2 TB23 Input output L3 CN1B Input L3 L2 CN1A Input L1 Grounding F1 F2 F3 F4 Fuse 250VAC 6 3A CN6 Input L2 L3 Grounding CN2 Surge absorber circuit Surge absorber circuit Short circuit Short circuit ...

Page 83: ...74 HWE0803A GB 4 BC Controller Components 1 CMB P NU G GA 1 Front 2 Rear view G type Liquid pipe Indoor unit side Gas pipe Indoor unit side TH12 TH15 TH16 TH11 SVM1 LEV1 LEV3 PS1 PS3 Tube in tube heat exchanger Gas Liquid separator ...

Page 84: ... III Outdoor Unit Components 75 HWE0803A GB 3 Rear view GA type TH12 TH15 TH16 TH11 SVM2 SVM1 LEV1 LEV3 LEV2 PS1 PS3 Tube in tube heat exchanger Gas Liquid separator ...

Page 85: ... III Outdoor Unit Components 76 HWE0803A GB 2 CMB P NU GB HB 1 Front 2 Rear view Liquid pipe Indoor unit side Gas pipe Indoor unit side TH15 TH12 LEV3 ...

Page 86: ... Outdoor Unit Components 77 HWE0803A GB 5 Control Box of the BC Controller 1 CMB P1016NU G GA Relay board Transformer Terminal block for transmission line BC controller board Terminal block for power supply ...

Page 87: ... III Outdoor Unit Components 78 HWE0803A GB 6 BC Controller Circuit Board 1 BC controller circuit board BC board SW1 SW2 SW5 SW6 SW4 ...

Page 88: ... III Outdoor Unit Components 79 HWE0803A GB 2 RELAY BOARD RELAY 4 board 3 RELAY BOARD RELAY 10 board ...

Page 89: ... 80 ...

Page 90: ...s and Specifications of MA and ME Remote Controllers 83 2 Group Settings and Interlock Settings via the ME Remote Controller 84 3 Interlock Settings via the MA Remote Controller 88 4 Using the built in Temperature Sensor on the Remote Controller 89 ...

Page 91: ... 82 ...

Page 92: ...or units using non polar ized 2 core cables Non polarized 2 core cable Remote controller connection Connectable to any indoor unit in the group Connectable anywhere on the indoor out door transmission line Interlock with the ventilation unit Each indoor unit can individually be in terlocked with a ventilation unit Set up via remote controller in the group Each indoor unit can individually be inter...

Page 93: ...tion of registration Unit type Indoor unit in this case blinks to indicate a registration error Indicates that selected address does not have a corresponding unit 4 To register the addresses for multiple indoor units repeat steps and above 3 4 To search for an address go to section 2 Address Search To next page To search for an address go to section 2 Address Search Bring up the Interlock Setting ...

Page 94: ...NAY and indoor unit that is interlocked with it will be displayed alternately LOSSNAY can be searched in the same manner by bringing up the LOSSNAY address in the Interlocked unit address display window B Interlock setting search After performing step proceed as follows Bring up the address of the indoor unit to be searched on the display Select the address of the indoor unit to be searched by pre...

Page 95: ...temperature range setting on the simultaneous cooling heating type units that supports the automatic operation mode to save on energy consumption enable the Skip Auto Mode setting to make the automatic operation mode unselectable If the automatic operation mode is selected the energy saving function may not work properly When connected to the air conditioning units that do not support the automati...

Page 96: ...atic operation cannot be performed The automatic operation mode is skipped in the function selection mode sequence The left figure shows the display that appears when the current temperature range setting is between 19 C and 30 C in the Cool Dry mode and the lower limit temperature is selected to be set 2 Temperature range setting for heating 4 Switch between the Lower and Upper limit temperature ...

Page 97: ...ked LOSSNAY unit Registration completed The registered indoor unit address and IC and the interlocked LOSSNAY address and LC will appear alternately Registration error If the registration fails the indoor unit address and the LOSSNAY address will be displayed alternately Registration cannot be completed The selected unit address does not have a corresponding indoor unit or a LOSSNAY unit Registrat...

Page 98: ...o search for the address of the LOSSNAY unit that is interlocked with the selected indoor unit Search completed With a LOSSNAY connection The indoor unit address and IC and the interlocked LOSSNAY address and LC will appear alternately Take the following steps to delete the interlock setting between a LOSSNAY unit and the interlocked indoor unit from the remote controller that is connected to the ...

Page 99: ... 90 ...

Page 100: ... 91 HWE0803A GB V Electrical Wiring Diagram 1 Electrical Wiring Diagram of the Outdoor Unit 93 2 Electrical Wiring Diagram of the BC Controller 96 3 Electrical Wiring Diagram of Transmission Booster 105 ...

Page 101: ... 92 ...

Page 102: ...rature Liquid pipe temperature TH3 Thermistor Discharge pipe temperature TB3 M1 M2 M1 M2 S TB7 1 2 3 6 4 5 1 2 1 2 3 4 ACC inlet pipe temperature OA temperature 2 FAN Board LED1 Unit address setting LED1 Power supply to Indoor Outdoor transmission line CN102 CNS2 yellow SWU2 10 s digit SWU1 1 s digit 10 1 10 1 10 1 10 1 SW4 SW3 SW2 SW1 ON IGBT temperature Function setting connector Power supply In...

Page 103: ...1 TB31 Current sensor DC 1 6 5 4 3 R01 2 2 LED2 Error 1 CNCT2 blue t 4 OFF 1 SW1 Motor Compressor C1 DCCT1 ACCT2 FT N Z1 TB21 TB22 L F2 AC250V 6 3A T 1 F1 AC250V 6 3A T 5 black white red 3 CN01 L3 L3 L2 L2 L1 TB1 W CNAC2 black DCCT1 1 Single dotted lines indicate wiring not supplied with the unit 2 Dot dash lines indicate the control box boundaries 3 Refer to the Data book for connecting input out...

Page 104: ... OFF 10 SWU1 white CN213 red SC L2 3 Z24 7 4 3 2 1 1 2 2 7 1 SV2 2 CN5 1 CN4 red CNINV 3 4 R630 1 1 C630 white 3 red CN22 red C631 5 F01 DC700V 4A T 1 CNTYP5 green 4 LED2 Error 21S4a 1 LED1 Normal operation 2 3 2 U X02 X03 CN18V blue 5 1 3 7 CN4 3 CN6 2 IGBT 4 SC P1 FT P black C30 red Diode Bridge CT3 72C C1 CN2 CNTYP black R1 black TB22 6 3 RSH1 CN102 3 R6 C17 1 1 1 FAN Board 63LS ZNR1 U L 3 Nois...

Page 105: ...6 5 4 3 2 1 1 2 CNP3 3 2 1 CNP1 3 CN02 2 1 CONT B 1 2 3 4 5 6 CN05 3 5 1 CN12 1 3 CN26 TB02 TR SVM1 Solenoid valve Fuse AC250V 6 3A F F01 Terminal T1 4 Terminal block for Transmission TB02 Terminal block for power source TB01 Solenoid valve SV1 4A B C Expansion valve Thermistor sensor Transformer Name Symbol TR TH11 12 15 16 LEV1 3 PS1 3 Pressure sensor CONT B Note 1 TB02 is transmission terminal ...

Page 106: ... 3 2 1 SV6C SV6A SV6B 1 2 3 4 1 2 3 4 1 2 3 4 1 5 3 1 7 5 3 1 7 5 3 1 X8 X7 X33 X10 X9 X34 X12 X11 X35 CN30 Black CN31 Yellow Solenoid valve SVM1 CONT B Pressure sensor TR TH11 12 15 16 LEV1 3 PS1 3 Symbol Name Transformer Thermistor sensor Expansion valve SV1 6A B C Solenoid valve TB01 Terminal block for power source TB02 Terminal block for Transmission T1 6 Terminal F01 Fuse AC250V 6 3A F Note 1...

Page 107: ...1 4 3 2 1 4 3 2 1 X30 X1 X2 1 3 5 4 3 2 1 SV1B SV1A SV1C 1 2 3 4 3 2 4 1 3 2 4 1 X35 X11 X12 X34 X9 X10 X33 X7 X8 X32 X5 X6 X31 X3 X4 7 1 3 5 7 1 3 5 7 1 3 5 7 1 3 5 7 1 3 5 7 1 1 1 4 3 2 4 3 2 4 3 2 1 4 3 2 SV2C SV2A SV2B SV3C SV3A SV3B SV4C SV4A SV4B SV5B SV5A SV5C 1 1 1 1 2 2 2 2 3 3 3 3 4 4 4 4 11 12 13 8 9 10 5 6 7 14 15 16 8 9 10 11 12 13 5 6 7 14 15 16 1 2 1 2 3 3 4 3 2 1 4 3 2 1 SV6C SV6A ...

Page 108: ... 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 7 5 3 1 3 3 X14 X13 X36 X37 X15 X16 X38 X39 X17 X19 X18 X20 7 5 3 1 7 5 3 1 7 5 3 1 CN40 SVM1 2 3 2 1 3 1 REL B 4 5 6 8 9 7 10 12 11 13 15 14 16 3 4 2 1 SV11B SV11A SV11C 1 3 2 8 9 10 11 12 13 3 2 4 1 5 6 7 14 15 16 4 3 2 1 SV12C SV12A SV12B SV13C SV13A SV13B SV14C SV14A SV14B SV15B SV15A SV15C 4 3 2 1 4 3 2 1 4 3 2 1 4 3 2 1 4 3 2 1 4 3 2 1 4 3 2 1 4 3 2 1 4 3 2 1...

Page 109: ...V6C 1 2 3 4 1 2 3 4 3 3 2 1 2 1 16 15 14 7 6 5 13 12 11 10 9 8 16 15 14 7 6 5 10 9 8 13 12 11 4 4 4 4 3 3 3 3 2 2 2 2 1 1 1 1 SV5C SV5A SV5B SV4B SV4A SV4C SV3B SV3A SV3C SV2B SV2A SV2C 2 3 4 1 2 3 4 2 3 4 2 3 4 1 1 1 7 5 3 1 7 5 3 1 7 5 3 1 7 5 3 1 7 5 3 1 7 X4 X3 X31 X6 X5 X32 X8 X7 X33 X10 X9 X34 X12 X11 X35 1 4 2 3 1 4 2 3 4 3 2 1 SV1C SV1A SV1B 1 2 3 4 5 3 1 X2 X1 X30 X60 X21 CN46 Yellow 3 1 ...

Page 110: ... 3 1 7 5 3 1 7 5 3 1 1 CN36 Green X21 CN45 Green CN44 Yellow CN43 Red REL B 4 5 6 8 9 7 10 12 11 13 15 14 16 3 4 2 1 SV11B SV11A SV11C 1 3 2 8 9 10 11 12 13 3 2 4 1 5 6 7 14 15 16 4 3 2 1 SV12C SV12A SV12B SV13C SV13A SV13B SV14C SV14A SV14B SV15B SV15A SV15C 4 3 2 1 4 3 2 1 4 3 2 1 4 3 2 1 4 3 2 1 4 3 2 1 4 3 2 1 4 3 2 1 4 3 2 1 SV16B SV16A SV16C 1 2 3 4 1 3 4 3 4 2 1 X51 X55 X56 X52 X53 X57 X54 ...

Page 111: ...3 4 8 7 6 5 4 3 2 1 1 2 CN02 CONT B 3 5 1 CN12 1 3 CN26 TR Fuse AC250V 6 3A F F01 Terminal T1 4 Terminal block for Transmission TB02 Terminal block for power source TB01 Solenoid valve SV1 4A B C Expansion valve Thermistor sensor Transformer Name Symbol TR TH12 15 LEV3 CONT B Note 1 TB02 is transmission terminal block Never connect power line to it 2 The initial set values of switch on CONT B are ...

Page 112: ...9 10 5 6 7 14 15 16 8 9 10 11 12 13 5 6 7 14 15 16 1 2 1 2 3 3 4 3 2 1 4 3 2 1 SV6C SV6A SV6B 7 6 5 4 3 2 1 CN39 3 1 CN52 CONT B 6 5 4 3 2 1 LEV3 2 1 1 2 3 4 5 6 7 8 4 3 2 1 1 2 3 2 1 CN03 CN02 CN10 CN11 TH12 TH15 TR CN50 7 6 5 4 3 2 1 1 3 5 1 3 CN38 CN26 3 1 CNTR REL B F01 Fuse AC250V 6 3A F Terminal T1 8 CONT B Terminal block for Transmission TB02 Terminal block for power source TB01 Solenoid va...

Page 113: ...10 15 14 13 1 2 3 4 4 3 2 1 4 3 2 1 1 2 3 4 4 3 2 1 1 2 3 4 4 3 2 1 1 2 3 4 1 2 3 8 7 6 5 4 3 2 1 4 CNOUT2 CNOUT4 1 2 3 4 4 3 2 1 4 3 2 1 1 2 3 4 1 2 3 4 4 3 2 1 1 2 3 4 4 3 2 1 1 2 3 4 4 3 2 1 1 2 3 4 4 3 2 1 TO NEXT INDOOR UNIT PULL BOX FUSE 15A BREAKER 15A POWER SUPPLY 208V 230V 3 3 2 1 2 1 1 1 5 6 7 8 9 10 11 12 13 14 15 16 3 2 4 8 9 10 11 12 13 3 2 4 5 6 7 14 15 16 S SHIELD TB02 Indoor outdoo...

Page 114: ...White White Blue Red Red DSA White White Blue Red Red Red Red Varistor Varistor Noise filter Stabilized power supply 4 3 2 1 1 2 3 CN2 CN1 Black Black Black Black Green Yellow 1 2 3 E 4 Choke coil 1 2 CN3 1 2 1 2 CN4 CN2 1 2 CN1 Electronic control board Black White Red Red Black S B A S B A Terminal block 2 for transmission line TB3 Expanded indoor unit side Terminal block 1 for transmission line ...

Page 115: ... 106 ...

Page 116: ... 107 HWE0803A GB VI Refrigerant Circuit 1 Refrigerant Circuit Diagram 109 2 Principal Parts and Functions 116 ...

Page 117: ... 108 ...

Page 118: ... ST3 ST1 63LS CV8a CV6a TH7 TH3 SV4a SV4b SV4d SV2 ACC ST6 ST7 ST17 TH5 TH6 CV9a CV10a SV9 CP2 SV5b CV4a CV2a CV7a CV3a CV5a HEX Solenoid valve block 63H1 BV1 BV2 SV5c COMP 63HS1 O S TH4 CJ2 SV1a CP1 CJ1 21S4a ST3 ST1 63LS CV8a CV6a TH7 TH3 SV4a SV4d SV2 ACC ST6 ST7 ST17 TH5 TH6 CV9a CV10a SV9 CP2 SV5b CV4a CV2a CV7a CV3a CV5a HEX Solenoid valve block 63H1 BV1 BV2 SV5c COMP SV4b SV4c ...

Page 119: ...6 CV9a CV10a SV9 CP2 SV5b CV4a CV2a CV7a CV3a CV5a HEX 63H1 BV1 BV2 SV5c COMP O S TH4 CJ2 SV1a CP1 21S4a ST3 ST1 63LS CV8a CV6a TH7 TH3 SV4a SV4b SV4d SV2 ACC ST6 ST7 ST17 TH5 TH6 CV9a CV10a SV9 CP2 SV5b CV4a CV2a CV7a CV3a CV5a HEX BV1 BV2 SV5c COMP Low pressure side distrbutor High pressure side junction pipe 63HS1 CJ1 63H1 Solenoid valve block Solenoid valve block ...

Page 120: ...CV9a CV10a SV9 CP2 SV5b CV4a CV2a CV7a CV3a CV5a HEX 63H1 63HS1 CJ1 63H1 BV1 BV2 SV5c COMP O S TH4 CJ2 SV1a CP1 21S4a ST3 ST1 63LS CV8a CV6a TH7 TH3 SV4a SV4d SV2 ACC ST6 ST7 ST17 TH5 TH6 CV9a CV10a SV9 CP2 SV5b CV4a CV2a CV7a CV3a CV5a HEX BV1 BV2 SV5c COMP SV4b SV4c Solenoid valve block Solenoid valve block Low pressure side distrbutor High pressure side junction pipe ...

Page 121: ...9a CV10a SV9 CP2 SV5b CV4a CV2a CV7a CV3a CV5a HEX 63H1 63HS1 CJ1 63H1 BV1 BV2 SV5c COMP SV4b SV4c O S TH4 CJ2 SV1a CP1 21S4a ST3 ST1 63LS CV8a CV6a TH7 TH3 SV4a SV4d SV2 ACC ST6 ST7 ST17 TH5 TH6 CV9a CV10a SV9 CP2 SV5b CV4a CV2a CV7a CV3a CV5a HEX BV1 BV2 SV5c COMP SV4b SV4c Solenoid valve block Solenoid valve block Low pressure side distrbutor High pressure side junction pipe ...

Page 122: ... VI Refrigerant Circuit 113 HWE0803A GB 2 BC controller 1 CMB P104 P1016NU G TH15 TH12 LEV3 LEV1 TH16 PS3 PS1 TH11 SVM1 Gas Liquid separator Check valve block Solenoid valve block ...

Page 123: ... GB 2 CMB P108 P1013 P1016NU GA main 3 CMB P104 P108NU GB sub TH15 TH12 LEV3 SVM2 LEV1 LEV2 TH16 PS3 PS1 TH11 SVM1 Gas Liquid separator Check valve block Solenoid valve block TH15 TH12 HIC C CP LEV3 Check valve block Solenoid valve block ...

Page 124: ... VI Refrigerant Circuit 115 HWE0803A GB 4 CMB P1016NU HB sub TH15 TH12 HIC C CP LEV3 Check valve block Solenoid valve block ...

Page 125: ...es sure switch 63H1 1 Detects high pressure 2 Provides high pressure pro tection 4 15MPa 601psi OFF setting Thermis tor TH4 Discharge 1 Detects discharge air temper ature 2 Provides high pressure pro tection Degrees Celsius Resistance check 0 C 32 F 698kohm 10 C 50 F 413kohm 20 C 68 F 250kohm 30 C 86 F 160kohm 40 C 104 F 104kohm 50 C 122 F 70kohm 60 C 140 F 48kohm 70 C 158 F 34kohm 80 C 176 F 24ko...

Page 126: ... tion AC208 230V Open while being powered closed while not being pow ered Continuity check with a tester SV2 SV4a SV4d Heat exchanger capacity control Controls outdoor unit heat ex changer capacity SV5b Heat exchanger capacity control Prevents high pressure rise Controls defrost cycle AC208 230V Closed while being powered open while not being powered SV5c Allows the refrigerant to pass through the...

Page 127: ... Continuity between yellow brown and blue Thermis tor TH1 Suction air temperature Indoor unit control Thermo 0 C 32 F 15kohm 10 C 50 F 9 7kohm 20 C 68 F 6 4kohm 25 C 77 F 5 3kohm 30 C 86 F 4 3kohm 40 C 104 F 3 1kohm Resistance check TH2 Pipe temper ature 1 Indoor unit control Frost prevention Hot adjust 2 LEV control during heat ing operation subcool detection TH3 Gas pipe temperature LEV control ...

Page 128: ... re frigerant tempera ture LEV control Subcool Solenoid valve SVM1 Opens during cooling and de frost modes AC208 230V Open while being powered closed while not being pow ered Continuity check with a tester SV A Provides refrigerant to indoor unit in cooling operation SV B Provides refrigerant to indoor unit in heating operation SV C Provides refrigerant to indoor unit in cooling operation LEV LEV1...

Page 129: ...rol Subcool Solenoid valve SVM1 Opens during cooling and de frost modes AC208 230V Open while being powered closed while not being pow ered Continuity check with a tester SVM2 Pressure differential control SV A Provides refrigerant to indoor unit in cooling operation SV B Provides refrigerant to indoor unit in heating operation SV C Provides refrigerant to indoor unit in cooling operation LEV LEV1...

Page 130: ...et tempera ture LEV control Superheat Solenoid valve SV A Provides refrigerant to indoor unit in cooling operation AC208 230V Open while being powered closed while not being pow ered Continuity check with a tester SV B Provides refrigerant to indoor unit in heating operation SV C Provides refrigerant to indoor unit in cooling operation LEV LEV3 Pressure differential control DC12V Opening of a valv...

Page 131: ...et tempera ture LEV control Superheat Solenoid valve SV A Provides refrigerant to indoor unit in cooling operation AC208 230V Open while being powered closed while not being pow ered Continuity check with a tester SV B Provides refrigerant to indoor unit in heating operation SV C Provides refrigerant to indoor unit in cooling operation LEV LEV3 Pressure differential control DC12V Opening of a valv...

Page 132: ... 123 HWE0803A GB VII Control 1 Functions and Factory Settings of the Dipswitches 125 2 Controlling the Outdoor Unit 132 3 Controlling BC Controller 145 4 Operation Flow Chart 146 ...

Page 133: ... 124 ...

Page 134: ...ation monitoring Refer to the LED monitor display on the outdoor unit board Anytime after power on C C SW2 1 Centralized control switch Without connection to the centralized controller With connection to the centralized con troller Before power on B B 2 Deletion of connec tion information Normal control Deletion Before power on A 3 Deletion of error his tory SW OC Storage of IC OC error history OC...

Page 135: ... C 59 F Anytime after power on except during defrost op eration B B P96 P120 7 C 45 F P96 P120 12 C 54 F 5 6 Temperature unit setting Centigrade Fahrenheit Anytime after power on C C 7 Target condensing temperature setting for heating 49 C 120 F 53 C 127 F A 8 9 Model setting To change the ex ternal static pressure setting Outdoor standard static pressure Outdoor high static pressure Before being ...

Page 136: ...the following connector CN6 short circuit connector is mated with the mating connector Leave the short circuit connector on the mating connector during normal operation to enable error detection and protect the equipment from damage Switch Function Function according to switch setting Switch setting timing Units that re quire switch setting Note 2 OFF ON OFF ON OC OS SW5 1 2 3 4 5 Low noise mode s...

Page 137: ... and the unit may be damaged Switch Function Function according to switch setting Switch setting timing OFF ON OFF ON SW1 1 Enabling disabling the following error detection functions ACCT DCCT sensor failure 5301 Detail No 115 116 ACCT DCCT sensor circuit failure 5301 Detail No 117 118 IPM open Disconnected CNCT2 5301 Detail No 119 Detection of erroneous wiring 5301 Detail No 120 Error detec tion ...

Page 138: ...nction Vane angle limit setting for cooling operation Initial vane position Heating 4 C 7 2 F up Automatic LEV value conversion function Indoor unit inlet 100h Disabled Fan output 2500h Enabled Thermo ON signal Built in sensor on the remote controller Available During heating operation According to the SW1 7 setting Heat pump Always on while in the heating mode Fan speed setting for Heating Thermo...

Page 139: ...he MA remote controller PAR 21MAA does not have the switches listed above Refer to the installation manual for the func tion setting Remote controller Switching switch 1 ON 2 3 4 Switch 2 1 Function Remote controller main sub setting At power on of the remote controller Normal startup Timer mode startup 3 Cooling heating display set by automatic setting Displayed Not displayed 4 Suction temperatur...

Page 140: ...the same group Setting of rotary switch Address No 01 99 1 101 199 with the 100 s digit automatically being set to 1 2 00 200 1 At factory shipment the rotary switch is set to 01 2 The address range that can be set with the ME remote controller is between 101 and 200 When the dials are set to a number between 01 and 99 the 100 s digit is automatically set to 1 When the dials are set to 00 the 100 ...

Page 141: ...ial startup Performing startup sequence rotation does not change the basic operation of OC and OS Only startup sequence is changed Startup sequence of the outdoor units can be checked with the self diagnosis switch SW1 on the OC 3 Initial Control When the power is turned on the initial processing of the microcomputer is given top priority During the initial processing control processing of the ope...

Page 142: ... low pressure 63LS drops below 0 23MPa 33psi When low pressure 63LS ex ceeds 0 38MPa 55psi When high pressure 63HS1 rises When 63HS1 exceeds 3 62MPa 525psi When 63HS1 is or below 3 43MPa 497psi and 30 seconds have passed Operation SV9 ON OFF When high pressure 63HS1 rises during the heating operation When 63HS1 exceeds 3 50MPa 507psi When SV5b is ON and the pressure is 2 70MPa 391psi or below Othe...

Page 143: ...scharge temperature limit Discharge temperature TH4 of the compressor in operation is monitored and when it exceeds the upper limit the frequency is decreased every minute Operating temperature is 115 C 239 F 3 Periodic frequency control Frequency control other than the ones performed at start up upon status change and for protection is called periodic frequen cy control convergent control and is ...

Page 144: ...l be 50 minutes if defrosting took 12 minutes In the multiple outdoor unit system all of the outdoor units that are in operation go into the defrost mode simultaneously The unit s that is stopped at the time defrost operation starts remains stopped 2 Defrost operation Model TH6 SW3 3 OFF SW3 3 ON P72 model 10 C 14 F 5 C 23 F P96 model 8 C 18 F 5 C 23 F P120 model 8 C 18 F 5 C 23 F Outdoou unit Com...

Page 145: ...very cycle during Cooling only Cooling main Heating only or Heating main mode The refrigerant recovery mode starts when all of the following conditions are met 1 When 5 minutes have passed in the Heating only or Heating main mode or 30 seconds have passed in the Cooling only or Cooling main mode since the completion of the previous refrigerant recovery cycle AND the when following conditions are m...

Page 146: ... ON 2 OFF OFF OFF ON 3 OFF ON OFF ON 4 ON OFF OFF ON 5 ON ON OFF OFF Heating only 1 ON ON OFF OFF Heating main 1 ON ON ON OFF 2 ON ON OFF OFF Defrost 1 ON ON OFF OFF P96 P120 models Cooling only Cooling main 1 OFF OFF OFF ON ON 2 OFF OFF OFF OFF ON 3 OFF OFF ON OFF ON 4 OFF ON ON OFF ON 5 ON ON ON OFF OFF Heating only 1 ON ON ON OFF OFF Heating main 1 ON ON ON ON OFF 2 ON ON ON OFF OFF Defrost 1 O...

Page 147: ... The compressor on the OC remains in operation and the compressor on the OS starts up 50 F 60Hz OC or F 50Hz OC Completed in the integrated operation time of 35 minutes Completed in the integrated operation time of 90 minutes The compressor on the OC starts up Both the OC and OS stop The startup sequence of the OC and OS is rotated 50 F 60Hz OS or F 50Hz OS Completed in the integrated operation ti...

Page 148: ...reached four hours When the integrated operation time of compressor in heating mode has reached two hours When an error is detected that does not permit the unit to perform an emergency operation 2 Control at or after the completion of emergency operation At or after the completion of emergency operation the compressor stops and the error code reappears on the remote con troller If another error r...

Page 149: ...000A After the completion of an emergency operation the correct connection information will be restored 2 Starting the emergency operation When the OS is in trouble 1 A communication error occurs An emergency operation starts in approximately six minutes Error codes that permit an emergency operation Applicable to both OC and OS Emergency operation pattern 2 outdoor units 1 If an attempt is made t...

Page 150: ...essing Autonomous distributed control system F2 VPM control Rotation speed control of compressor or fan depending on the refrigerant pressure value and the changing speed Self contained capacity control depending on the load Refrigerant distribution control depending on the operation mode Outdoor unit Daisy chained non polar 2 wire transmission line Indoor unit BC controller Autonomous distributed...

Page 151: ...ng Heating Heating Heating Low pressure pipe High pressure pipe High pressure gas High pressure gas High pressure gas High pressure two phase Low pressure gas Low pressure gas Low pressure gas Low pressure gas Low pressure gas Gas liquid separator Outdoor unit BC controller Indoor unit LEV LEV M M L M L M L M L A O M L M L M L M L A O B C D I J J E F F N N N K M L M L M L G H A O L J G I K H D C F...

Page 152: ...g mode 3 Dry mode 4 Automatic cooling heating mode 5 Fan mode 6 Stopping mode 1 Cooling only mode All indoor units in operation are in cooling mode 2 Heating only mode All indoor units in operation are in heating mode 3 Cooling main mode Coexistence of units in cooling and heating modes 4 Heating main mode Coexistence of units in cooling and heating modes 5 Stopping mode All indoor units are in fa...

Page 153: ...nput to the indoor units When DIP SW4 4 is set to ON the 4 step DEMAND control is enabled Eight step demand control is possible in the system with two outdoor units Refer to Chapter II 3 2 7 Various types of control using input output signal connector on the outdoor unit various connec tion options for details page 22 ...

Page 154: ...2 1 Liquid level control The liquid level detected by the liquid inlet temperature TH11 sensor is controlled so as to be within a certain range 2 Pressure differential control The detected differential pressure PS1 and P3 is controlle every minute so as to be within a certain range 110 110 3 3 Can be 110 or more due to pressure rise on the liquid side PS1 2000 1200 LEV2 only GA type LEV3 Superheat...

Page 155: ...te 3 Note 3 Note 3 1 Protection function self holding cancelled 2 Indoor unit LEV fully closed 1 Auxiliary heater OFF 2 Low fan speed for 1 minute YES YES YES YES YES YES YES YES Normal operation Error Stop 1 Prohibition Auto COOL HEAT display Automatic cooling heating mode Note 3 YES Auto cooling heating mode 1 1 Note 1 Indoor unit LEV fully closed Opening 41 Note 2 The system may go into the err...

Page 156: ...n search for the indoor unit address for the remote controller address and for the group information will start During this HO PLEASE WAIT blinks on the display of the remote controller When the indoor unit to be controlled by the remote controller is missing HO PLEASE WAIT keeps blinking on the display of the remote controller even after 3 or more minutes after power on Note 3 The units will foll...

Page 157: ... Transmitted to the outdoor unit 3 3 Operation mode Note 1 The system may go into the error mode on either the indoor unit side or the BC controller or outdoor unit side If some of the indoor units are experiencing a problem only those indoor units that are experiencing the problem will stop If the BC controller or the outdoor unit is experiencing a problem all the connected units will stop Operat...

Page 158: ...trol 4 Outdoor unit fan control 5 BC controller solenoid valve control 6 BC controller control Normal operation During test run mode Indoor unit fan operation 1 Inverter output 0Hz 2 Indoor unit LEV Oil return LEV fully closed 3 Solenoid valves OFF 4 Outdoor unit fan stop 5 BC controller solenoid valves OFF 6 BC controller LEV fully closed Unit in the stopped state 2 3 Note 1 The indoor fan operat...

Page 159: ... minute restart prevention Note 1 2 Note 1 2 YES YES YES YES NO NO NO NO NO 1 Indoor outdoor unit fan control 2 Inverter frequency control 3 Indoor unit LEV fully open 4 Solenoid valve control 5 BC controller solenoid valve control 6 BC controller LEV control Normal operation Defrost operation 4 way valve ON During test run mode 1 Indoor unit fan operation at Very Low speed 2 Inverter output 0Hz 3...

Page 160: ... LEV fully closed 2 3 Note 1 When the indoor unit inlet temperature exceeds 18 C 64 F the outdoor unit compressor and the indoor unit fan start the intermittent operation simultaneously When the indoor unit inlet temperature becomes 18 C 64 F or less the fan always runs at low speed The outdoor unit the indoor unit and the solenoid valve operate in the same way as they do in the cooling operation ...

Page 161: ... 152 ...

Page 162: ... before a Test Run 155 2 Test Run Method 156 3 Operating Characteristic and Refrigerant Amount 157 4 Adjusting the Refrigerant Amount 157 5 Refrigerant Amount Adjust Mode 160 6 The following symptoms are normal 162 7 Standard Operation Data Reference Data 163 ...

Page 163: ... 154 ...

Page 164: ...pressor will evaporate and the insulation resistance will go up Do not measure the insulation resistance of the terminal block for transmission line for the unit remote controller 3 Check that the valve on the gas pipe and liquid pipe are fully open Securely tighten the cap 4 Check the phase sequence and the voltage of the power supply 5 When a transmission booster is connected Turn on the transmi...

Page 165: ... Switch to cooling or heating operation by pressing the Operation Mode button Press the Fan Speed button Change the air flow direction by pressing the Vertical Air Direction button or the Louver button Confirm the operation of outdoor unit fan Confirm the operation of all interlocked equipment such as ventilation equipment Note 1 Refer to the following pages if an error code appears on the remote ...

Page 166: ...t Amount 1 Symptoms Overcharging or undercharging of refrigerant can cause the following symptoms Before attempting to adjust the amount of refrigerant in the system thoroughly check the operating conditions of the system Then adjust the refrigerant amount by running the unit in the refrigerant amount adjust mode 2 Amount of refrigerant 1 To be checked during operation Operate all indoor units in ...

Page 167: ... of ø28 58 1 1 8 high pressure pipe m L2 Length of ø22 2 7 8 high pressure pipe m L3 Length of ø19 05 3 4 high pressure pipe m L4 Length of ø15 88 5 8 high pressure pipeŠ m L5 Length of ø15 88 5 8 liquid pipe m L6 Length of ø12 7 1 2 liquid pipe m L7 Length of ø9 52 3 8 liquid pipe m L8 Length of ø6 35 1 4 liquid pipe m ǩ1 ǩ3 ǩ4 ǩ1 ǩ3 ǩ4 Refer to the table below L1 Length of ø28 58 1 1 8 high pres...

Page 168: ...oor Indoor 2 6 5 3 4 1 P36 P96 Indoor unit1 30 model Indoor unit2 96 model Indoor unit3 12 model Indoor unit4 15 model Indoor unit5 12 model Indoor unit6 24 model A 28 58 B 9 52 C 9 52 D 9 52 E 9 52 F 22 2 G 19 05 40m 10m 20m 5m 5m 3m 1m 1 1 8 3 8 3 8 3 8 3 8 7 8 3 4 3 8 3 8 1 4 1 4 1 4 3 8 131ft 32ft 65ft 16ft 16ft 9ft 3ft 32ft 16ft 16ft 32ft 16ft 16ft a 9 52 b 9 52 c 6 35 d 6 35 e 6 35 f 9 52 10...

Page 169: ...equate for a short while after starting the unit in the refrigerant amount adjust mode but turn out to be inadequate later on when the refrigerant system stabilizes When the amount of refrigerant is truly adequate TH3 TH6 on the indoor unit is 5 C 9 F or above and SH on the indoor unit is between 5 and 15 C 9 and 27 F The refrigerant amount may seem adequate at the moment but may turn out to be in...

Page 170: ...pressure side Keep the unit running for 5 minutes after adjusting the refrigerant amount to determine its adequacy Keep the unit running for 5 minutes after adjusting the refrigerant amount to determine its adequacy Turn off SW4 3 on the OC Turn on SW4 3 on the OC Adjustment complete Note 4 Has the initial start up mode been completed Gradually add refrigerant from the service port on the low pres...

Page 171: ...n it operates at low speed for 2 minutes and finally it operates at the set speed Pre heating stand by When the main power is turned on the display shown on the right appears on the in door unit remote controller for 5 minutes HO or PLEASE WAIT icons blink on the display The system is starting up Wait until the blinking display of HO or PLEASE WAIT go off The drain pump keeps run ning after the un...

Page 172: ...35 114 13 16 25 82 Fan speed Hi Hi Amount of refrigerant kg lbs oz 19 1 42 21 3 47 Outdoor unit Electric current A 15 4 23 2 Voltage V 230 230 Compressor frequency Hz 43 65 LEV open ing Indoor unit Pulse 180 200 220 387 387 BC controller 1 2 3 2000 180 2000 170 Pressure High pressure 63HS1 Low pressure 63LS MPa psi 2 65 0 90 384 130 2 66 0 93 385 134 BC controller on the liquid side PS1 Intermedia...

Page 173: ...d Hi Amount of refrigerant kg lbs oz 22 5 50 Outdoor unit Electric current A 29 5 Voltage V 230 Compressor frequency Hz 75 LEV open ing Indoor unit Pulse 230 230 230 230 BC controller 1 2 3 2000 210 Pressure High pressure 63HS1 Low pressure 63LS MPa psi 2 82 0 89 409 129 BC controller on the liquid side PS1 Intermediate part PS3 2 73 2 72 395 394 Temp of each sec tion Outdoor unit Discharge TH4 C ...

Page 174: ...eed Hi Hi Amount of refrigerant kg lbs oz 19 1 42 21 3 47 Outdoor unit Electric current A 16 8 24 1 Voltage V 230 230 Compressor frequency Hz 48 71 LEV open ing Indoor unit Pulse 205 203 200 406 406 BC controller 1 2 3 110 520 110 590 Pressure High pressure 63HS1 Low pressure 63LS MPa psi 2 61 0 69 378 100 2 67 0 68 387 98 BC controller on the liquid side PS1 Intermediate part PS3 2 54 2 22 368 32...

Page 175: ...eed Hi Amount of refrigerant kg lbs oz 22 5 50 Outdoor unit Electric current A 28 3 Voltage V 230 Compressor frequency Hz 81 LEV open ing Indoor unit Pulse 295 295 295 295 BC controller 1 2 3 110 660 Pressure High pressure 63HS1 Low pressure 63LS MPa psi 2 57 0 64 372 92 BC controller on the liquid side PS1 Intermediate part PS3 2 54 2 22 368 321 Temp of each sec tion Outdoor unit Discharge TH4 C ...

Page 176: ...n speed Hi Amount of refrigerant kg lbs oz 34 1 75 Outdoor unit Electric current A 31 5 Voltage V 230 Compressor frequency Hz 43 43 LEV open ing Indoor unit Pulse 275 275 275 275 BC controller 1 2 3 2000 2000 250 Pressure High pressure 63HS1 Low pressure 63LS MPa psi 2 65 0 90 384 130 2 65 0 90 384 130 BC controller on the liquid side PS1 Intermediate part PS3 2 59 2 59 375 375 Temp of each sec ti...

Page 177: ...efrigerant kg lbs oz 38 5 85 Outdoor unit Electric current A 39 5 Voltage V 230 Compressor frequency Hz 65 43 LEV open ing Indoor unit Pulse 230 230 230 275 275 BC controller 1 2 3 2000 2000 260 Pressure High pressure 63HS1 Low pressure 63LS MPa psi 2 66 0 91 385 131 2 65 0 91 384 131 BC controller on the liquid side PS1 Intermediate part PS3 2 59 2 59 375 375 Temp of each sec tion Outdoor unit Di...

Page 178: ...efrigerant kg lbs oz 42 4 93 Outdoor unit Electric current A 47 5 Voltage V 230 Compressor frequency Hz 65 65 LEV open ing Indoor unit Pulse 230 230 230 230 275 275 BC controller 1 2 3 2000 2000 270 Pressure High pressure 63HS1 Low pressure 63LS MPa psi 2 66 0 93 385 134 2 66 0 93 385 134 BC controller on the liquid side PS1 Intermediate part PS3 2 59 2 59 375 375 Temp of each sec tion Outdoor uni...

Page 179: ...refrigerant kg lbs oz 43 0 95 Outdoor unit Electric current A 53 8 Voltage V 230 Compressor frequency Hz 75 65 LEV open ing Indoor unit Pulse 275 275 275 275 275 275 BC controller 1 2 3 2000 2000 280 Pressure High pressure 63HS1 Low pressure 63LS MPa psi 2 82 0 91 409 131 2 66 0 91 385 131 BC controller on the liquid side PS1 Intermediate part PS3 2 66 2 66 385 385 Temp of each sec tion Outdoor un...

Page 180: ...efrigerant kg lbs oz 44 6 98 Outdoor unit Electric current A 60 2 Voltage V 230 Compressor frequency Hz 75 75 LEV open ing Indoor unit Pulse 200 275 275 275 275 275 275 BC controller 1 2 3 2000 2000 290 Pressure High pressure 63HS1 Low pressure 63LS MPa psi 2 82 0 89 409 129 2 82 0 89 409 129 BC controller on the liquid side PS1 Intermediate part PS3 2 73 2 73 395 395 Temp of each sec tion Outdoor...

Page 181: ...d Hi Amount of refrigerant kg lbs oz 34 1 75 Outdoor unit Electric current A 34 6 Voltage V 230 Compressor frequency Hz 48 48 LEV open ing Indoor unit Pulse 350 350 350 350 BC controller 1 2 3 110 110 870 Pressure High pressure 63HS1 Low pressure 63LS MPa psi 2 61 0 69 378 100 2 61 0 69 378 100 BC controller on the liquid side PS1 Intermediate part PS3 2 54 2 22 368 321 Temp of each sec tion Outdo...

Page 182: ...t of refrigerant kg lbs oz 38 5 85 Outdoor unit Electric current A 42 2 Voltage V 230 Compressor frequency Hz 71 48 LEV open ing Indoor unit Pulse 295 295 350 350 BC controller 1 2 3 110 110 980 Pressure High pressure 63HS1 Low pressure 63LS MPa psi 2 64 0 68 382 98 2 64 0 69 382 335 BC controller on the liquid side PS1 Intermediate part PS3 2 60 2 27 377 329 Temp of each sec tion Outdoor unit Dis...

Page 183: ...f refrigerant kg lbs oz 42 4 93 Outdoor unit Electric current A 44 2 Voltage V 230 Compressor frequency Hz 71 71 LEV open ing Indoor unit Pulse 295 295 295 295 350 350 BC controller 1 2 3 110 110 1050 Pressure High pressure 63HS1 Low pressure 63LS MPa psi 2 67 0 68 387 98 2 79 0 58 405 81 BC controller on the liquid side PS1 Intermediate part PS3 2 63 2 31 381 335 Temp of each sec tion Outdoor uni...

Page 184: ... of refrigerant kg lbs oz 43 0 95 Outdoor unit Electric current A 54 0 Voltage V 230 Compressor frequency Hz 81 71 LEV open ing Indoor unit Pulse 350 350 350 350 350 350 BC controller 1 2 3 110 110 1120 Pressure High pressure 63HS1 Low pressure 63LS MPa psi 2 62 0 64 380 92 2 62 0 68 380 98 BC controller on the liquid side PS1 Intermediate part PS3 2 60 2 27 377 329 Temp of each sec tion Outdoor u...

Page 185: ... of refrigerant kg lbs oz 44 6 98 Outdoor unit Electric current A 58 3 Voltage V 230 Compressor frequency Hz 81 81 LEV open ing Indoor unit Pulse 203 350 350 350 350 350 350 BC controller 1 2 3 110 110 1190 Pressure High pressure 63HS1 Low pressure 63LS MPa psi 2 57 0 64 372 92 2 57 0 64 372 92 BC controller on the liquid side PS1 Intermediate part PS3 2 54 2 22 368 321 Temp of each sec tion Outdo...

Page 186: ...play on the Remote Controller 182 3 Investigation of Transmission Wave Shape Noise 270 4 Troubleshooting Principal Parts 273 5 Refrigerant Leak 314 6 Compressor Replacement Instructions 316 7 Servicing the BC controller 327 8 Troubleshooting Using the Outdoor Unit LED Error Display 330 ...

Page 187: ... 178 ...

Page 188: ...ase O 4106 Transmission power supply fault O 4115 Power supply signal sync error O 4116 RPM error Motor error O O 4220 4225 Note 4320 4325 Note 108 Abnormal bus voltage drop O 109 Abnormal bus voltage rise O 111 Logic error O 131 Low bus voltage at startup O 4230 4330 Heatsink overheat protection O 4240 4340 Overload protection O 4250 4255 Note 4350 4355 Note 101 IPM error O 102 ACCT overcurrent H...

Page 189: ...re TH6 O 5107 1221 Temperature sensor fault Outside temperature TH7 O 5110 1214 01 Temperature sensor fault Heatsink temperature THHS O 5111 Temperature sensor fault BC controller Liquid inlet temperature TH11 O 5112 Bypass outlet temperature TH12 O 5115 LEV3 outlet temperature TH15 O 5116 LEV3 inlet temperature TH16 O 5201 High pressure sensor fault 63HS1 O 5201 1402 High pressure sensor fault Ou...

Page 190: ...O 6831 MA controller signal reception error No signal re ception O O 6832 MA remote controller signal transmission error Synchronization error O O 6833 MA remote controller signal transmission error H W error O O 6834 MA controller signal reception error Start bit de tection error O O 7100 Total capacity error O 7101 Capacity code setting error O O O 7102 Wrong number of connected units O O 7105 A...

Page 191: ...board and the Fan board 3 Cause check method and remedy 1 Faulty wiring Check the following wiring connections 1 Between Control board and Fan board 2 Between Fan board and INV board 2 INV board failure Fan board failure and Control board failure Replace the INV board or the Fan board or control board when the power turns on automatically even if the power source is reset Refer to section 7 Invert...

Page 192: ...use check method and remedy 1 Faulty wiring Check the following wiring connections 1 Between Control board and Fan board 2 Between Fan board and INV board 2 INV board failure Fan board failure and Control board failure Replace the INV board or the Fan board or control board when the power turns on automatically even if the power source is reset Refer to section 7 Inverter YHMU A under part 4 Troub...

Page 193: ... leak gas shortage Refer to the page on refrigerant amount evaluation page 157 2 Overload operation Check operating conditions and operation status of indoor outdoor units 3 LEV failure on the indoor unit Perform a heating operation and check the operation Cooling LEV on the indoor unit LEV1 2 3 SVM1 2 SVA C Heating LEV on the indoor unit LEV3 SVB SV4a 4d Refer to the page on troubleshooting LEV p...

Page 194: ...t up the operation immediately stops 3 Cause check method and remedy 1301 Cause Check method and remedy 1 Inner pressure drop due to a leakage Refer to the section on troubleshooting the low pressure sensor page 274 2 Low pressure sensor failure 3 Short circuited pressure sensor cable due to torn outer rubber 4 A pin on the male connector is missing 5 Disconnected wire 6 Failure of the low pressur...

Page 195: ...oller SVM1 and 2 malfunction Cooling only or defrost 4 BC controller SVA and SVC malfunction Cooling only or cooling main 5 BC controller SVB malfunction Heating only or heating main Solenoid valve SV malfunction 4a 4c P72 model 4a 4d P96 and P120 models Cooling only or cooling main 6 Port address setting error Confirm the port address of the indoor unit 7 Refrigerant service valve actuation failu...

Page 196: ...tes or more after the first stoppage of the outdoor unit the same se quence as Item 1 above first detection is followed 4 For 30 minutes after the stop of the outdoor unit preliminary errors will be displayed on the LED display 3 Cause check method and remedy 1302 Cause Check method and remedy 1 Inner pressure drop due to a leakage Refer to the page on the troubleshooting of the high pressure sens...

Page 197: ...e unit is stopped 4 Preliminary water leakage is cancelled when the following conditions are met One hour after the preliminary water leakage was detected it is not detected that the drain pump goes from OFF to ON The operation mode is changed to Cool Dry Liquid pipe temperature inlet temperature is 10 C 18 F 3 Cause check method and remedy 2500 Cause Check method and remedy 1 Drain water drainage...

Page 198: ...eliminary water leakage was detected it is not detected that the drain pump goes from OFF to ON The operation mode is changed to Cool Dry Liquid pipe temperature inlet temperature 10 C 18 F 3 Cause check method and remedy Reference 2500 Cause Check method and remedy 1 Drain water drainage problem Clogged drain pump Clogged drain piping Backflow of drain water from other units Check for proper drai...

Page 199: ...an Fan or Stop to an error stop 2502 appears on the monitor of the units that came to an error stop 6 Forced stoppage of the outdoor unit Detection timing The error is detected whether the unit is in operation or stopped 7 Ending criteria for the forced stoppage of outdoor unit Power reset the indoor unit that was identified as the error source and the outdoor unit that is connected to the same re...

Page 200: ...ngs the outdoor unit in the same refrigerant circuit to an error stop compressor operation prohibited and the outdoor unit brings all the indoor units in the same refrigerant circuit that are in any mode other than Fan or Stop to an error stop 6 Forced stoppage of the outdoor unit Detection timing The error is detected whether the unit is in operation or stopped This error is detected whether the ...

Page 201: ...ure thermistor or suction temperature thermistor or short or open circuited Drain pump is in operation One hour has elapsed since the drain sensor went off Short 90 C 194 F or above Open 20 C 4 F or below 3 Cause check method and remedy 2503 Cause Check method and remedy 1 Faulty connector CN31 insertion 1 Check for connector connection failure Reinsert the connector restart the operation and chec...

Page 202: ...601 Cause Check method and remedy 1 The water tank of the humidifier is empty Check the amount of supply water Check for the solenoid valve and for the connection 2 The solenoid valve for humidification is OFF Check the connector 3 Disconnected float switch Check the connecting part 4 Poor operation of float switch Check for the float switch 5 Frozen water tank Turn off the power source of the wat...

Page 203: ...r is canceled if the units stop during error stop The error display needs to be canceled by setting the remote controller 3 Cause check method and remedy Check the following factors if an error is detected without drop in the outdoor temperature Reference 3121 Cause Check method and remedy 1 Thermistor failure Check thermistor resistance 2 Pinched lead wire Check for pinched lead wire 3 Torn wire ...

Page 204: ...at the CN02 connector is 188 V or above 3 Wiring failure Confirm that the voltage at the control board connector CNAC is 188 V or above If the voltage is below 188V check the wiring connection between the noise filter board CN02 and control board CNAC P72 model Confirm that the wiring between TB23 and INV board SC T is put through CT3 P96 and P120 models Confirm that the wiring between the coil L3...

Page 205: ... board failure Check the coil connections Check for coil burnout Check that the voltage across TB21 and TB22 on the noise filter board is 414V or above 3 Wiring failure Confirm that the voltage at the control board connector CNAC is 190 V or above If the voltage is below 190 check the wiring between noise filter CN6 noise filter CN2 transformer box and control board CNAC Confirm that the wiring be...

Page 206: ...r supply problem 4 Transmission voltage detection circuit failure 4 Check method and remedy Check the items in IX 4 8 2 on all outdoor units in the same refrigerant circuit Transmission power supply fault other than error detail code FF Outdoor unit 2 Error definition and error detection method Transmission power reception failure 3 Cause One of the outdoor units stopped supplying power but no oth...

Page 207: ... and control board CNAC Confirm that the voltage at the control board con nector CNAC is 188 V or above 5 Control board failure If none of the items described above is applicable and if the trouble reappears even after the power is switched on again replace the control board 4115 YHMU A Cause Check method and remedy 1 Power supply error Check the voltage of the power supply terminal block TB1 2 No...

Page 208: ...ay is ON Only for the three phase model Indoor unit If detected less than 180rpm or more than 2000rpm the indoor unit will restart and keep running for 3 minutes If detected again the display will appear 3 Cause check method and remedy 4116 Cause Check method and remedy 1 Board failure Replace the board 2 Motor malfunction Check for the motor and the solenoid switch 3 Solenoid switch malfunction ...

Page 209: ...is 253V or above 1 Confirm on the LED monitor that the bus voltage is above 160 V Replace the INV board if it is below 160 V 2 Check the voltage at CN505 on the control board Go to 3 3 Check the coil connections L1 L3 and coil burnout 4 Check the resistance of the diode stack Refer to IX 4 7 6 5 Check the wiring connections between the following sections Between the noise filter board and INV boar...

Page 210: ...han 420 V check the following items 1 Check the coil connections and for coil burnout on the noise filter 2 Check the wiring between the noise filter board and INV board 3 Check the connection to SCP1 and SC P2 on the INV board 4 Check the in rush current resistor value 5 Check the 72C resistance value 6 Check the DCL resistance value Replace the INV board if no problems are found 4225 Check the v...

Page 211: ... THMU A under part 4 Troubleshooting Principal Parts for error codes related to the inverter page 293 1 Error Code Abnormal bus voltage rise Detail code 109 2 Error definition and error detection method If Vdc 830V is detected during inverter operation 3 Cause check method and remedy 1 Different voltage connection Check the power supply voltage on the power supply terminal block TB1 2 INV board fa...

Page 212: ... Bus voltage abnormality If Vdc 400V or Vdc 160V is detected H W detection 3 Cause check method and remedy Same as detail code No 108 and 109 of 4220 error Refer to section 7 Inverter THMU A under part 4 Troubleshooting Principal Parts for error codes related to the inverter page 293 4220 4225 THMU A P96 and P120 models ...

Page 213: ...In the case of 4225 Refer to section 7 Inverter THMU A under part 4 Troubleshooting Principal Parts for error codes related to the inverter page 293 4220 4225 THMU A Cause Check method and remedy 1 External noise 2 INV board failure Refer to IX 4 7 2 1 page 295 3 IPM failure P96 and P120 models only Replace the IPM 4 DCCT failure P96 and P120 models only Replace the DCCT Cause Check method and rem...

Page 214: ... Error Code Low bus voltage at startup Detail code 131 2 Error definition and error detection method When Vdc 160 V is detected just before the inverter operation 3 Cause check method and remedy 1 Inverter main circuit failure Same as detail code 108 of 4220 error Refer to section 7 Inverter YHMU A under part 4 Troubleshooting Principal Parts for error codes related to the inverter page 301 4220 4...

Page 215: ...lure Refer to IX 4 7 2 6 page 296 2 Outdoor unit fan failure Check the outdoor unit fan operation If any problem is found with the fan operation check the fan motor Refer to IX 4 7 2 5 page 296 3 Air passage blockage Check that the heat sink cooling air passage is not blocked 4 THHS failure P72 model 1 Check for proper installation of the INV board IGBT Check for proper instal lation of the IGBT h...

Page 216: ... 301 4230 YHMU A Cause Check method and remedy 1 Fan board failure Refer to IX 4 7 2 6 page 304 2 Outdoor unit fan failure Check the outdoor unit fan operation If any problem is found with the fan operation check the fan motor Refer to IX 4 7 2 5 page 304 3 Air passage blockage Check that the heat sink cooling air passage is not blocked 4 THHS failure 1 Check for proper installation of the INV boa...

Page 217: ...ed to the inverter page 293 4240 THMU A Model Imax Arms P72 model 35 P96 P120 model 53 Model TOL P72 model 95 C 203 F P96 P120 model 80 C 175 F Cause Check method and remedy 1 Air passage blockage Check that the heat sink cooling air passage is not blocked 2 Power supply environment Power supply voltage is 188 V or above 3 Inverter failure Refer to IX 4 7 page 293 4 Current sensor ACCT failure Ref...

Page 218: ... 4 Troubleshooting Principal Parts for error codes related to the inverter page 301 4240 YHMU A Model Imax Arms P72 model 19 P96 P120 model 27 Cause Check method and remedy 1 Air passage blockage Check that the heat sink cooling air passage is not blocked 2 Power supply environment Power supply voltage is 414 V or above 3 Inverter failure Refer to IX 4 7 page 301 4 Compressor failure Check that th...

Page 219: ...y In the case of 4250 P72 model P96 and P120 models In the case of 4255 Refer to section 7 Inverter THMU A under part 4 Troubleshooting Principal Parts for error codes related to the inverter page 293 4250 4255 THMU A Cause Check method and remedy 1 Inverter output related Refer to IX 4 7 2 1 4 page 295 Cause Check method and remedy 1 Inverter output related Refer to IX 4 7 2 1 4 page 295 2 Same a...

Page 220: ...of 4250 In the case of 4255 Refer to section 7 Inverter YHMU A under part 4 Troubleshooting Principal Parts for error codes related to the inverter page 301 4250 4255 YHMU A Cause Check method and remedy 1 Inverter output related Refer to IX 4 7 2 1 4 page 303 Check the IGBT module resistance value of the INV board if no problems are found Refer to the Trouble shooting for IGBT module Cause Check ...

Page 221: ...n method P72 model Overcurrent 88 Apeak or 42 Arms and above is detected by the current sensor P96 and P120 models Overcurrent 128 Apeak or 60 Arms and above is detected by the current sensor 3 Cause check method and remedy Refer to section 7 Inverter THMU A under part 4 Troubleshooting Principal Parts for error codes related to the inverter page 293 4250 THMU A Cause Check method and remedy 1 Inv...

Page 222: ...error detection method When IPM IGBT short damage or grounding on the load side is detected just before starting the inverter 3 Cause check method and remedy In the case of 4250 In the case of 4255 Refer to section 7 Inverter under part 4 Troubleshooting Principal Parts for error codes related to the inverter 4250 YHMU A Cause Check method and remedy 1 Inverter output related Refer to IX 4 7 2 1 4...

Page 223: ... codes related to the inverter 1 Error Code Heatsink overheat protection at startup 2 Error definition and error detection method The heatsink temperature THHS remains at or above TOH for 10 minutes or more at inverter startup 3 Cause check method and remedy Same as 4230 error 4250 4255 Cause Check method and remedy 1 Short circuited compressor Refer to IX 4 7 2 2 2 Output wiring Check for a short...

Page 224: ...eatsink overheat protection at startup 2 Error definition and error detection method The heatsink temperature THHS remains at or above 100 C 212 F for 10 minutes or more at inverter startup 3 Cause check method and remedy Same as 4230 error 4260 YHMU A ...

Page 225: ...for 3 minutes When the error is not restored after 3 minutes if restored the outdoor unit runs normally the outdoor unit makes an error stop Short detectable at 90 C 194 F or higher Open detectable at 40 C 40 F or lower Sensor error at gas side cannot be detected under the following conditions During heating operation During cooling operation for 3 minutes after the compressor turns on 3 Cause che...

Page 226: ...s detected just before the restart of the outdoor unit the outdoor unit makes an error stop and the error code 5102 5103 5104 5105 5106 or 5107 will appear During 3 minute antirestart mode preliminary errors will be displayed on the LED display A short or an open described above is not detected for 10 minutes after the compressor start during defrost mode or for 3 minutes after defrost mode 3 Caus...

Page 227: ... an open of THHS is detected just before or during the inverter operation 3 Cause check method and remedy Refer to section 7 Inverter YHMU A under part 4 Troubleshooting Principal Parts for error codes related to the inverter page 301 5110 THMU A Cause Check method and remedy 1 INV board failure If the problem recurs when the unit is put into operation replace the INV board Cause Check method and ...

Page 228: ... after the operation mode is changed 3 Cause check method and remedy Reference 5111 5112 5115 5116 Cause Check method and remedy 1 Thermistor failure Check thermistor resistance 2 Pinched lead wire Check for pinched lead wire 3 Torn wire coating Check for wire coating 4 A pin on the male connector is missing or contact failure Check connector 5 Disconnected wire Check for wire 6 Thermistor input c...

Page 229: ... unit makes an error stop and the error code 5201 will appear During 3 minute antirestart mode preliminary errors will be displayed on the LED display A error is not detected for 3 minutes after the compressor start during defrost operation or 3 minutes after defrost operation 3 Cause check method and remedy 5201 Cause Check method and remedy 1 High pressure sensor failure Refer to the page on the...

Page 230: ...s 5201 and 5203 will appear The unit will continue its operation by using other sensors as a backup 3 Cause check method and remedy 5201 5203 Cause Check method and remedy 1 High pressure sensor failure Refer to the page on the troubleshooting of the high pressure sensor IX 4 1 page 273 2 Pressure drop due to refrigerant leak 3 Torn wire coating 4 A pin on the male connector is missing or contact ...

Page 231: ...to section 7 Inverter YHMU A under part 4 Troubleshooting Principal Parts for error codes related to the inverter page 301 5301 THMU A Cause Check method and remedy 1 Inverter open output phase Check the output wiring connections 2 Compressor failure Refer to IX 4 7 2 2 page 295 3 INV board failure Refer to IX 4 7 2 1 3 4 page 295 Cause Check method and remedy 1 Inverter open output phase Check th...

Page 232: ...n 7 Inverter THMU A under part 4 Troubleshooting Principal Parts for error codes related to the inverter page 293 5301 THMU A P96 and P120 models only Cause Check method and remedy 1 Contact failure Check the contact of the connector CNCT on the INV board and the contact the connector on DCCT side 2 Misorientation Check the installation direction of DCCT 3 DCCT sensor failure Replace the DCCT sens...

Page 233: ...or value is detected with the ACCT detection circuit just before the inverter starts 3 Cause check method and remedy Refer to section 7 Inverter under part 4 Troubleshooting Principal Parts for error codes related to the inverter 5301 Cause Check method and remedy 1 INV board failure Refer to IX 4 7 2 1 3 4 2 Compressor failure Refer to IX 4 7 2 2 ...

Page 234: ...n 7 Inverter THMU A under part 4 Troubleshooting Principal Parts for error codes related to the inverter page 293 5301 THMU A P96 and P120 model only Cause Check method and remedy 1 Contact failure Check for good contact of the INV board connector CNCT and the connec tor on the DCCT side 2 INV board failure Refer to IX 4 7 2 1 3 4 page 295 3 DCCT sensor failure Replace the DCCT sensor 4 Compressor...

Page 235: ...ted to the inverter page 293 5301 THMU A Cause Check method and remedy 1 Inverter output wiring problem Check output wiring connections Confirm that the U and W phase output cables are put through CT12 and CT22 on the INV board respectively 2 Inverter failure Refer to IX 4 7 2 3 4 page 296 3 Compressor failure Refer to IX 4 7 2 2 page 295 Cause Check method and remedy 1 ACCT sensor disconnection C...

Page 236: ...bleshooting Principal Parts for error codes related to the inverter page 293 5301 YHMU A Cause Check method and remedy 1 Inverter output wiring problem Check output wiring connections Confirm that the U and W phase output cables are put through CT12 and CT22 on the INV board respectively 2 Inverter failure Refer to IX 4 7 2 3 4 page 304 3 Compressor failure Refer to IX 4 7 2 2 page 303 5301 THMU A...

Page 237: ...ethod and remedy Refer to section 7 Inverter YHMU A under part 4 Troubleshooting Principal Parts for error codes related to the inverter page 301 5301 YHMU A Cause Check method and remedy 1 Inverter output wiring problem Check output wiring connections Confirm that the U and W phase output cables are put through CT12 and CT22 on the INV board respectively 2 Inverter failure Refer to IX 4 7 2 3 4 p...

Page 238: ... connector for proper contact Reconnect the connector and operate the unit to check for proper operation 2 Broken or partially broken humidity sensor wire 2 Check for broken humidity sensor wire 3 Humidity sensor fault 3 Check the output voltage across No 1 and No 3 pins of connector CN30 with the connector being connected to the indoor unit control board 30 1 25V 40 1 52V 50 1 88V 60 2 19V 70 2 4...

Page 239: ... fault nonvolatile memory error 2 Error definition and error detection method This error is detected when the data cannot be read out from the built in nonvolatile memory on the remote controller 3 Cause check method and remedy 1 Remote controller failure Replace the remote controller 1 Error Code Remote controller board fault clock IC error 2 Error definition and error detection method This error...

Page 240: ... or more of the following have the same address Outdoor units indoor units LOSSNAY units control lers such as M NET remote controllers Example 6600 01 appears on the remote controller Unit 01 detected the error Two or more units in the system have 01 as their ad dress Find the unit that has the same address as that of the error source Once the unit is found correct the address Then turn off the ou...

Page 241: ...ts connected to different outdoor units or in case of the system connected with MELANS 4 Check method and remedy 6602 NO Tightly reconnect the male power supply connector to the female power supply switch connector CN40 YES YES YES YES YES YES NO NO NO NO Is the transmission line work performed while the power is on Check the power source of the indoor unit 188 253V Check the transmission line wor...

Page 242: ...on the display on the remote controller indicates the controller where an error oc curred 3 Cause check method and remedy 6603 Cause Check method and remedy 1 The transmission processor cannot be transmit ted as the short wavelength voltage like noise ex ists consecutively on the transmission line No noise indicates that the error source controller is a fail ure If noise exists investigate the noi...

Page 243: ...al they will run normally If not check the causes 1 4 2 Faulty or disconnected transmission wiring of BC controller 3 Disconnected connector of BC controller CN02 4 Faulty control board of BC controller Indoor unit IC M NET remote controller RC MA re mote con troller MA No ac knowl edgement ACK at RC trans mission to IC 1 When IC unit address is changed or modified during operation Turn off the ou...

Page 244: ...nowl edgement ACK at RC transmissionto IC 1 Same causes as 1 5 for sys tem with one outdoor unit 1 Turn off the power sources of the outdoor and indoor units for 5 or more minutes and turn them on again If the error is accidental the will run normal ly If not check the cause 2 2 Disconnection or short circuit of the transmission line for the out door unit on the terminal block for centralized cont...

Page 245: ...ts that are connect ed to different outdoor units 1 Turn off the power source of LOSSNAY for 5 or more min utes and turn it on again If the error is accidental it will run normally If not check the cause 2 2 Disconnection or short circuit of the transmission line for the outdoor unit on the termi nal block for centralized con trol line connection TB7 2 Check the causes of 1 5 If the cause is found...

Page 246: ... of LOSSNAY for 5 or more min utes and turn it on again If the error is accidental it will run normally If not check the cause 2 2 Disconnection or short circuit of the transmission line for the outdoor unit on the termi nal block for centralized con trol line connection TB7 2 Check the causes of 1 5 If the cause is found correct it If no cause is found check 3 3 When multiple outdoor units are co...

Page 247: ...ACK 3 System configuration 3 System connected to the system controllers MELANS 6607 Error source address Error display Detection method Cause Check method and remedy Out door unit OC M NET remote controller RC System control ler SC MA remote controller MA No acknowl edgement ACK at IC transmis sion to OC Same cause as that for system with one outdoor unit Same remedy as that for system with one ou...

Page 248: ...th one outdoor unit 1 Same cause as that for system with one outdoor unit 2 Error occurrence on all IC in the system with one outdoor unit 1 Check the LED display for troubleshooting on the outdoor unit 1 Total capacity error 7100 If an error is found check the check code definition and correct the error If no error is found check 2 2 Capacity code error 7101 3 Error in the number of connected uni...

Page 249: ...e IC Same remedy as that for system with one outdoor unit 1 Same cause as that for system with one outdoor unit 2 Error occurrence on all IC in the system with one outdoor unit 1 Check the LED display for troubleshooting on the out door unit 1 An error is found by the outdoor unit Total capacity error 7100 Capacity code error 7101 Error in the number of connected units 7102 Address setting error 7...

Page 250: ...roller 3 M NET remote controller failure 2 Error occurrence on all IC in the system with one outdoor unit 1 Check the LED display for troubleshooting on the out door unit 1 An error is found by the outdoor unit Total capacity error 7100 Capacity code error 7101 Error in the number of connected units 7102 Address setting error 7105 If an error is found check the check code definition and correct th...

Page 251: ...h some indoor units have Use either of the following two methods for deletion 2 Although the address of LOSSNAY has been changed after the interlock registration of LOSSNAY is made using M NET remote controller the in door unit is keeping the mem ory of the previous address 1 Address deletion by M NET re mote controller Delete unnecessary address in formation using the manual set ting function of ...

Page 252: ...oltage signal by exceeding acceptable range of transmission wiring Farthest 200m 656ft or less Remote controller wiring 12m 39ft or less 4 The transmission line voltage signal is decreased due to erroneous sizing of transmission line Wire diameter 1 25mm2 AWG16 or more 4 Check method and remedy 1 When an error occurs during commissioning turn off the power sources for the outdoor unit indoor unit ...

Page 253: ...signals from the remote controller 4 Check method and remedy 1 Check for disconnected or loose transmission lines for the indoor units or MA remote controllers 2 Confirm that the power is supplied to the main power source and the remote controller line 3 Confirm that MA remote controller s capacity limit is not exceeded 4 Check the sub main setting of the MA remote controllers One of them must be ...

Page 254: ...Check for disconnected or loose transmission lines for the indoor units or MA remote controllers 2 Confirm that the power is supplied to the main power source and the remote controller line 3 Confirm that MA remote controller s capacity limit is not exceeded 4 Check the sub main setting of the MA remote controllers One of them must be set to MAIN 5 Diagnose the remote controller described in the r...

Page 255: ...r disconnected or loose transmission lines for the indoor units or MA remote controllers 2 Confirm that the power is supplied to the main power source and the remote controller line 3 Confirm that MA remote controller s capacity limit is not exceeded 4 Check the sub main setting of the MA remote controllers One of them must be set to MAIN 5 Diagnose the remote controller described in the remote co...

Page 256: ...he signals from the remote controller 4 Check method and remedy 1 Check for disconnected or loose transmission lines for the indoor units or MA remote controllers 2 Confirm that the power is supplied to the main power source and the remote controller line 3 Confirm that MA remote controller s capacity limit is not exceeded 4 Check the sub main setting of the MA remote controllers One of them must ...

Page 257: ...e model name set by the switch is differ ent from that of the unit connected turn off the power source of the outdoor and the indoor units and change the setting of the model name ca pacity code 2 The model selection switches SW5 1 5 4 on the outdoor unit are set incorrectly Check the setting for the model selection switch on the outdoor unit Dipswitches SW5 1 5 4 on the outdoor unit control board...

Page 258: ...address set by the switch SW2 on indoor unit board When the model name set by the switch is different from that of the unit connected turn off the power source of the outdoor and the indoor units and change the setting of the capacity code The capacity of the indoor unit can be confirmed by the self diagnosis function SW1 operation of the outdoor unit Outdoor unit 2 The model selection switches SW...

Page 259: ...unit control board 2 Disconnected transmission line from the outdoor unit or BC controller 3 Short circuited transmission line When 2 and 3 apply the following display will appear M NET remote controller Nothing appears on the remote controller be cause it is not powered MA remote controller HO or PLEASE WAIT blinks 4 The model selection switch SW5 7 on the out door unit is set to OFF Normally set...

Page 260: ...re set to 00 or a number between 51 and 100 If the outdoor unit address is out of the valid range reset the address with the power to the outdoor unit turned off If the BC controller address is out of the valid range reset the address with the power to both the outdoor unit and BC controller turned off 7106 Error source Cause Check method and remedy A remote controller for use with indoor units su...

Page 261: ...ch is connected to the BC controller Sub1 iii he indoor unit address which is connected to the BC controller Sub2 Address setting i ii iii ii and iii can be reversed Model total Total port number Single branching 2 branches merge 54 69 Change the port No Is there a BC controller Sub Are 4 or more indoor units connected to the same port Is the model total of indoor units connected to the same port ...

Page 262: ...y the booster being connected to the switch on the indoor unit The unit will not function properly unless the transmission booster is turned on 2 Power resetting of the transmission booster and outdoor unit Reset the power to the outdoor unit 3 Wiring failure between OC and OS 2 Confirm that the TB3 on the OC and OS are properly connected 4 Broken wire between OC and OS 3 Check the model selection...

Page 263: ...eck the connector CNTYP4 on the control board for proper connection 4 Check the settings of SW5 1 through SW5 4 on the control board Detail code 16 1 Check the connector CNTYP on the INV board for proper connection 2 Check the connector CNTYP5 on the control board for proper connection 3 Check the connector CNTYP4 on the control board for proper connection 4 Check the settings of SW5 1 through SW5...

Page 264: ...V board for proper connection 2 Check the connector CNTYP5 on the control board for proper connection 3 Check the connector CNTYP4 on the control board for proper connection 4 Check the wiring between the control board and INV board Refer to the section on Error code 0403 Detail code 00 01 05 1 Check the wiring between the control board and INV board Refer to the section on Error code 0403 2 Check...

Page 265: ...oor unit The connected indoor unit or BC controller is exclusively for use with R22 or R407C An in compatible indoor unit or BC controller is con nected The M NET connection adapter is connected to the indoor unit system in a system in which the Slim Model A control of units are con nected to the M NET Check the model names of the connected in door unit and the BC controller Check whether the conn...

Page 266: ... of the wire for the MA remote controller and the M NET transmission line on the indoor unit 3 The number of the MA remote controllers that are connected to an indoor unit exceeds the allowable range 2 units 4 The length or the diameter of the wire for the MA remote controller are out of specification 5 Short circuit of the wire for the remote display output of the outdoor unit or reversed polarit...

Page 267: ...or CN40 In the system to which the power supply unit for transmission lines is connected the male power supply connector is connect ed to the female power supply switch connector CN40 on the outdoor unit 4 Disconnected M NET transmission line on the indoor unit side 5 Disconnected wire between the terminal block for M NET line TB5 of the indoor unit and the indoor unit board CN2M or disconnected c...

Page 268: ...r the MA remote controller Short circuited wire for the MA remote controller Disconnected wire for the MA remote controller No 2 and disconnected line to the terminal block Reversed daisy chain connection between groups Incorrect wiring for the MA remote controller to the terminal block for transmission line connection TB5 on the indoor unit The M NET transmission line is connected incorrectly to ...

Page 269: ... indoor unit power failure All the indoor unit power failure Error display Error display Thermo is OFF Is operation possible Short circuit of the remote controller After turning the power on check whether HO PLEASE WAIT is displayed on the remote controller After more than 20 seconds since turning the power on is LED2 check of the indoor control board still displayed Is the operation by MELANS for...

Page 270: ... MA remote controller or disconnected line to the terminal block The indoor transmission line is connected incorrectly to the transmission terminal block for centralized controller TB7 4 Disconnected transmission line on the remote controller 5 Remote controller failure 6 Outdoor unit failure Refer to IX 8 Troubleshooting Using the Outdoor Unit LED Error Display page 330 2 Check method and remedy ...

Page 271: ... indoor unit control board Is it lit When it is lit When it is off or cannot be checked Check for the change of LED display by operating dip switch SW1 for self diagnosis Check voltage of the power supply terminal on the indoor unit AC208 230V Check the fuse on the circuit board Melted Check 200V circuit for short circuit and ground fault Check the connection of the connector Check the main power ...

Page 272: ...rol TB7 of the outdoor unit 3 The male power supply connector is connected to CN40 on more than one outdoor unit or the connector is connected to CN40 on the outdoor unit in the system to which a power supply unit for transmission line is connected Using MELANS 1 When MELANS is used HO display on the remote controller will disappear when the indoor unit and the local remote con troller M NET remot...

Page 273: ... are grouped 6 The power of the outdoor unit to be confirmed has been cut off 5 Check the power supply of the outdoor unit which is coupled with the unit to be confirmed 7 Transmission line is disconnected from the terminal block for central control system connection TB7 on the outdoor unit 6 Check that the transmission line for centralized control TB7 of the outdoor unit is not disconnect ed 8 Wh...

Page 274: ...em causes insufficient capacity SW1 setting Note Protection works and compressor frequency does not rise even at higher Te than Tem due to high dis charge temperature and high pressure At high discharge temperature Refer to 1102 page 184 At high pressure Refer to 1302 page 186 2 Indoor unit LEV malfunction Refer to the page of LEV troubleshooting 4 5 page 279 Insufficient refrigerant flows due to ...

Page 275: ...front of and behind the place where the foreign object is clogging the pipe upstream side and downstream side When the temperature drops significantly the foreign object may clog the pipe Remove the foreign object inside the pipe 8 The indoor unit inlet temperature is excessively Less than 15 C 59 F WB Check the inlet air temperature and for short cy cling Change the environment where the indoor u...

Page 276: ...ck the pressure sensor Refer to the page on Trouble shooting of Pressure Sensor Note Higher inlet pressure by the high pressure sensor than the actual pressure causes insufficient capac ity SW1 setting 2 Check the difference between the condensing tem perature Tc and the target condensing tempera ture Tcm with self diagnosis LED Note Higher Tc than Tcm causes insufficient capacity SW1 setting Note...

Page 277: ...hange the pipe 7 Piping size is not proper thin 8 Clogging by foreign object Check the temperature difference between the up stream and the downstream of the pipe section that is blocked Since blockage in the extended section is difficult to locate operate the unit in the cooling cycle and follow the same procedures that are used to locate the blockage of pipe during cooling operation Remove the b...

Page 278: ...y with SW1 Refer to the reference page for each error mode 1 Abnormal high pressure 2 Abnormal discharge air temperature 3 Heatsink thermistor failure Display the indoor piping temperature table with SW1 to check whether the freeze proof operation runs properly and check the temperature 4 Thermistor failure 5 Pressure sensor failure 6 Over current break 7 Refrigerant overcharge Note1 Frost prevent...

Page 279: ...nded 2 The sectional voltage level of transmission signal should be as follows Cause Erroneous operation Error code Error code definition Noise interference on the transmission line Signal is transformed and will be misjudged as the signal of another address 6600 Address overlap Transmission wave pattern is transformed due to the noise creating a new signal 6602 Transmission pro cessor hardware er...

Page 280: ...n line can not escape leading to change of the transmission signal 6 Check the treatment meth od of the shield of the transmission line for cen tralized control The transmission cable for centralized control is less subject to noise interference if it is grounded to the outdoor unit whose power jumper cable was moved from CN41 to CN40 or to the power sup ply unit The environment against noise vari...

Page 281: ...ation between the MA remote controller and the indoor unit is interrupted for 3 minutes in a row MA transmission error 6831 will occur 2 Confirmation of transmission specifications and wave pattern A B No polarity Across terminal No 1 2 Power supply 9V to 12VDC Satisfies the formula 12 msec bit 5 Voltage among terminals must be between DC9 and 12 V TB15 A B 1 2 MA remote controller Transmission wa...

Page 282: ...e high pressure sensor has a problem 3 Remove the high pressure sensor from the control board to check the pressure on the self diagnosis LED1 1 When the pressure displayed on self diagnosis LED1 is between 0 and 0 098MPa 14psi the high pressure sensor has a problem 2 When the pressure displayed on self diagnosis LED1 is approximately 4 15MPa 601psi the control board has a problem 4 Remove the hig...

Page 283: ...a problem 2 When the pressure displayed on self diagnosis LED1 is approximately 1 7MPa 247psi the control board has a problem When the outdoor temperature is 30 C 86 F or less the control board has a problem When the outdoor temperature exceeds 30 C 86 F go to 5 4 Remove the low pressure sensor from the control board and short circuit between the No 2 and 3 connectors 63LS CN202 to check the press...

Page 284: ...ing the temperature as the pipe on the oil separator side will be hot Do not give an impact from outside as the outer hull will be deformed leading to the malfunction of the inner valve 2 In case of SV1a Bypass valve This solenoid valve opens when powered Relay ON 1 At compressor start up the SV1a turns on for 4 minutes and the operation can be checked by the self diagnosis LED display and the clo...

Page 285: ...peration sound of the solenoid valve 4 The diagram on the next page shows the refrigerant flow This diagram shows the flow of the high temperature high pressure gas refrigerant in the Cooling only and Cooling main modes and the flow of the low temperature gas liquid refrigerant in the Heating only and Heating main modes Refer to the refrigerant circuit diagram Solenoid valves turns on and off acco...

Page 286: ...d valve coil Pin face tool Tightening torque 150N m 1500kg cm SV4c SV4b SV4a ST1 CV8a CV6a TH7 TH3 SV4a SV4d TH6 CV9a CV10a SV5b CV4a CV2a CV7a CV3a CV5a HEX BV1 BV2 SV5c SV4b SV4c SV4d SV4c SV4b SV4a Solenoid Valves Block Refrigerant Circuit Figure P96 and P120 models Solenoid valve block four compartments P96 and P120 models ...

Page 287: ...y touching the pipe 6 In the case of SV5c Bypass valve This solenoid valve opens when energized when the relay is on This valve turns on depending on the conditions during Cooling only or Cooling main operation Check for proper operation on the LED and by listening for the operation sound of the solenoid valve 7 In the case of SV9 Bypass valve This solenoid valve opens when energized when the rela...

Page 288: ...riven valves that operate by receiving the pulse signals from the indoor and outdoor unit control boards 1 Indoor LEV and BC controller LEV The valve opening changes according to the number of pulses 1 Control boards and the LEV 2 Pulse signal output and valve operation 3 LEV valve closing and opening operation 1 2 3 4 5 6 7 8 9 10 ON SW1 Indoor unit connector CN60 Control board CNLV1 CNLV2 Connec...

Page 289: ...he valve operates smoothly no sound from LEV or no vibration occurs however when the pulses change from E to A in the chart or the valve is locked a big sound occurs Whether a sound is generated or not can be determined by holding a screwdriver against it then placing your ear against the handle Valve opening refrigerant flow rate Valve closed Valve open E B 80 100 pulses Pulses Fully open 1400 pu...

Page 290: ...ce the LEV coils Incomple sealing leak from the valve When checking the refrigerant leak from the indoor LEV run the target indoor unit in the fan mode and the other indoor units in the cooling mode Then check the liquid temperature TH22 with the self diagnosis LED When the unit is running in the fan mode the LEV is ful ly closed and the temperature detected by the thermis tor is not low If there ...

Page 291: ...the pressure sensor connector in trouble is not faulty OK OK Check that the difference between each detected pressure is 0 098MPa 14psi or less OK Both the board and the pressure sensor are normal OK Is Pd P1 P3 Ps Remove the pressure sensor connector from the board and check the pressure OK OK Check whether the refrigerant pipe and the transmission line are connected correctly between the indoor ...

Page 292: ...plied pressure sensor is disconnected from the board Cooling only Heating only Heating main Non cooling Indoor heating SC small Heating indoor Thermo ON Especially noise is large Indoor heating SC small Heating indoor Thermo ON Especially noise is large Cooling main Symptoms SC11 large SC16 small PHM large SC11 large SC16 small PHM large Non cooling Normal SC11 large SC16 small PHM large Measureme...

Page 293: ...istor and the temperature measured by a commercially available thermometer and check whether there is no difference between them Insert the connector of the thermistor in trouble into the board check the sensor inlet temperature on the LED monitor and check the temperature difference START Normal Troubleshooting instructions for thermistor Replace the thermistor Temperature difference Temperature ...

Page 294: ...e below When the result is 10 it is normal 3 Check the self diagnosis switch Outdoor control board SW1 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON TH12 TH15 TH12 TH15 Liquid inlet temperature Bypass outlet temperature Bypass outlet temperature Bypass o...

Page 295: ...is fully open Check that LEV1 is fully open Check that SVA and SVC are ON Check that SVA and SVC are OFF Cooling or heating operation Note 2 Heating operation Check whether LEV3 is controlling superheat Check LEV1 Check LEV3 Check SVA and SVC Check SVB LEV1 is fully open Check whether LEV 3 is controlled by the value of the differential pressure LEV1 is fully open Note 3 Note 2 Note 3 YES NO Cooli...

Page 296: ...Non cooling and non heating SH12 small SC11 small SC16 large but branch pipe SC small BC controller sound PHM large Indoor heating SC small PHM large Non cooling Indoor heating SC small PHM large Part Malfunction mode Operation mode Content Standards of judgment on unit stable operation G GA type LEV1 Inclined to close Heating only Heating main Cooling main Difference between high pressure P1 and ...

Page 297: ...6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON 1 2 3 4 5 6 7 8 9 10 ON LEV1 opening LEV3 opening LEV3 opening BC controller bypass outlet superheat BC controller intermediate part subcool SH12 LEV2 opening LEV3 opening SC16 BC controller liquid side subcool SC11 Measurement data SW1 setting value Symbol G GA Standard main GB HB Sub 1 GB HB Sub 2 ...

Page 298: ... of the lead wires visually Intermediate connector Control board Check that no refrigerant leaks from LEV Pull out the connector from the board and check that the electricity runs with a tester The wiring side of CN05 and 07 Among 1 3 and 5 and among 2 4 and 6 Check the resistance between each coil with a tester between red and white red and orange brown and yellow and brown and blue and check tha...

Page 299: ...pstream and downstream pipes of the solenoid valve When the solenoid valve is ON There is no temperature difference When the solenoid valve is OFF There is a temperature difference OK Remove the solenoid valve coil and check that there is a suction force There is a suction force Note 2 Note 2 Note 2 Measure the temperature at the upstream and downstream pipes of the solenoid valve and compare them...

Page 300: ...SVB SVC Measure the temperature at the upstream and downstream pipes and of SVA Measure the temperature at the upstream and downstream pipes and of SVA Mode Cooling Heating Stopped Defrost Fan Port SVA ON OFF OFF OFF OFF SVB OFF ON OFF OFF OFF SVC ON OFF OFF OFF ON Operation mode Cooling only Cooling main Heating only Heating main Defrost Stopped SVM1 ON Pressure dif ferential con trol OFF or ON O...

Page 301: ...803A GB 4 BC controller transformer Before measuring the resistance pull out the connector Normal Abnormal CNTR 1 3 about 58 ohm Open phase or shorting CN03 1 3 about 16 ohm CNTR CN03 BC controller control board Red White Red Red ...

Page 302: ...r wait for 5 to 10 minutes and confirm that the voltage at both ends of the electrolytic capacitor has dropped to a sufficiently low level 2 The IPM on the inverter becomes damaged if there are loose screws are connectors If a problem occurs after replacing some of the parts mixed up wiring is often the cause of the problem Check for proper connection of the wiring screws connectors and Faston ter...

Page 303: ...eck the inverter frequency on the LED monitor and proceed to 2 6 if the fan motor is in operation 8 Noise is picked up by the peripheral device 1 Check that power supply wiring of the peripheral device does not run close to the power supply wiring of the outdoor unit 2 Check that the inverter output wiring is not in close contact with the power supply wiring and the transmission lines 3 Check that...

Page 304: ...e IPM 2 Logic error 4220 Detail code No 111 See the section Troubleshooting the IPM Refer to 7 5 Replace the IPM and put the out door unit back into operation If the problem persists replace the INV board Replace the INV board and put the outdoor unit back into opera tion If the problem persists replace the DCCT 2 Put the outdoor unit into operation 3 ACCT sensor circuit failure 5301 Detail code N...

Page 305: ... the INV board 3 Put the outdoor unit into operation 4 There is no voltage imbalance be tween the wires Normal Turn off SW1 1 4 Check whether the inverter is damaged During com pressor opera tion Put the outdoor unit into oper ation Check the inverter output volt age after the inverter output frequency has stabilized 1 There is an voltage imbalance be tween the wires Greater than 5 imbalance or 5V...

Page 306: ...rcuit Diode stack IPM Rush current protection resistor Electromagnetic relay DC reactor 2 Turn on the power again and check again 1 Main power breaker trip 2 No remote control display 3 Turn on the outdoor unit and check that it operates normally 1 Operates normally without tripping the main breaker a The wiring may have been short circuited Search for the wire that short circuited and repair it b...

Page 307: ...th a tester Check only for shorting DC reactor DCL Measure the resistance between terminals 1ohm or lower almost 0 ohm Measure the resistance between terminals and the chassis Current sensor ACCT P96 and P120 models Disconnect the CNCT2 connector and measure the resistance between terminals 280 ohm 30 ohm 1 2 PIN U phase 3 4 PIN W phase Check point Row A Not to be short circuited Row B to Row E In...

Page 308: ...t point is not allowed 2 Tester restriction Use the tester whose internal electrical power source is 1 5V or greater Use the dry battery powered tester The accurate diode specific resistance cannot be measured with the button battery powered card tester as the applied volt age is low Use a low range tester if possible A more accurate resistance can be measured Judgment value reference Black P N U ...

Page 309: ...ith a tester and use the results for troubleshoot ing Refer to 5 Intelligent power module IPM for notes on measurement and tester selection Judgment value reference Black External view P N to L1 to L2 to L3 Red P 5 200 ohm 5 200 ohm 5 200 ohm N to L1 5 200 ohm Internal circuit diagram to L2 5 200 ohm to L3 5 200 ohm L1 L2 L3 L1 L2 L3 THMU A ...

Page 310: ...r is 20V or below before checking inside the control box It takes about 10 minutes to discharge electricity after the power supply is turn off 2 The IPM on the inverter becomes damaged if there are loose screws are connectors If a problem occurs after replacing some of the parts mixed up wiring is often the cause of the problem Check for proper connection of the wiring screws connectors and Faston...

Page 311: ...n 8 Noise is picked up by the peripheral device 1 Check that power supply wiring of the peripheral device does not run close to the power supply wiring of the outdoor unit 2 Check if the inverter output wiring is not running parallel to the power supply wiring and the transmission lines 3 Check that the shielded wire is used as the transmission line when it is required and check that the grounding...

Page 312: ...No 111 Replace the INV board 3 ACCT sensor circuit failure 5301 Detail code No 117 Replace the INV board 4 IPM open 5301 Detail code No 119 Normal 2 Check for compressor ground fault or coil error Disconnect the compressor wiring and check the com pressor Meg and coil resis tance 1 Compressor Meg failure Error if less than 1 Mohm Check that there is no liquid re frigerant in the compressor If ther...

Page 313: ...unit into oper ation Check the inverter output volt age after the inverter output frequency has stabilized 1 There is an voltage imbalance be tween the wires Greater than 5 imbalance or 5V Replace the INV board 5 Check the fan motor ground fault or the winding Remove the wire for the out door fan motor and check the fan motor megger and the winding resistance 1 Fan motor megger failure Failure whe...

Page 314: ...procedure for individual components of main inverter circuit IGBT module Rush current protection resistor Electromagnetic relay DC reactor 3 Turn on the power again and check again 1 Main power breaker trip 2 No remote control display 4 Turn on the outdoor unit and check that it operates normally 1 Operates normally without tripping the main breaker a The wiring may have been short circuit ed Sear...

Page 315: ...d Disconnect all the wiring connected the INV board and make the measurement 2 Tester restriction Use the tester whose internal electrical power source is 1 5V or greater Use the dry battery powered tester The accurate diode specific resistance cannot be measured with the button battery powered card tester as the applied volt age is low Use a low range tester if possible A more accurate resistance...

Page 316: ... P1 FT N SC L1 SC L2 SC L3 Red SC P1 5 200 ohm 5 200 ohm 5 200 ohm FT N SC L1 5 200 ohm SC L2 5 200 ohm SC L3 5 200 ohm Black SC P2 FT N SC U SC V SC W Red SC P2 5 200 ohm 5 200 ohm 5 200 ohm FT N SC U 5 200 ohm SC V 5 200 ohm SC W 5 200 ohm SC U SC W SC V FT N SC P1 SC P2 SC L1 SC L2 SC L3 YHMU A ...

Page 317: ...nal block for transmission line connection DC 17 30 V AC 208 230 V Terminal block for power source TB1 Noise filter Noise filter Fuse Fuse Fuse LEV Fuse Surge protection INV board Control board Fan board 63H1 72C DCL DC DC converter Detection circuit for the power supply to the transmission line M NET board DC DC converter Microcomputer Microcomputer Microcomputer 5 V Power supply 18VPowersupply 1...

Page 318: ...citor 15V Power supply Inverter drive circuit Microcomputer 5 V Power supply 12 V Power supply DC DC converter Fuse Inverter Compressor Heat exchanger fan Fuse Fan board Microcomputer 5 V Power supply Inverter Inverter drive circuit Outdoor unit Power source system AC 208 230 V Control system DC 5 30 V 63H1 Inverter reset circuit DC DC converter Microcomputer 5 V Power supply 18 V Power supply Fus...

Page 319: ...nnector disconnection Check for shorted transmission line for centralized control Replace the control board Check the voltage between No 1 and No 2 pins of the CN102 on the power supply board for the transmission line Check the voltage between No 1 and No 3 pins of the CNDC on the INV board Check the voltage between SC P1 and TB N on the INV board Check the voltages among SC R SC S and SC T on the...

Page 320: ...proper connection of connectors Fix the wiring and connector disconnection Check for shorted transmission line for centralized control YES Is there a wiring error or a connector disconnection Replace the control board Check the wiring between the control board and power supply board for the transmission line CN102 and CNIT and check for proper connection of connectors Check the voltage between No ...

Page 321: ... 460V Terminal block for power source TB1 Noise filter Noise filter Fuse Fuse Fuse 72C LEV Fuse Surge protection INV board Control board Fan board 63H1 72C DCL DC DC converter Detection circuit for the power supply to the transmission line M NET board DC DC converter Microcomputer Microcomputer Microcomputer 5 V Power supply 18VPowersupply 12V Power supply 30 V Power supply Relay drive circuit Rel...

Page 322: ...s found Replace the noise filter Replace the noise filter Replace the M NET board Connect the noise filter CN4 and then turn the power on Replace the control board Replace the noise filter Replace the noise filter Replace the control board Fuse F4 on the noise filter board is blown Fuse F4 on the noise filter board is blown Disconnect the noise filters CN4 and CN5 and then replace fuse F4 on the n...

Page 323: ...2 Leak spot In the case of outdoor unit Cooling season 1 Run all the indoor units in the cooling test run mode 1 To run the indoor unit in test run mode turn SW3 2 from ON to OFF when SW3 1 on the outdoor control board is ON 2 Change the setting of the remote controller for all the indoor units to the cooling mode 3 Check that all the indoor units are performing a cooling operation 2 Check the SC1...

Page 324: ... BV2 4 Collect the refrigerant that remains inside the indoor unit Do not discharge refrigerant into air into the atmosphere when it is collected 5 Repair the leak 6 After repairing the leak perform evacuation of the extension pipe 1 for the indoor unit and open the ball valves BV1 and BV2 to adjust refrigerant 4 Leak spot In the case of outdoor unit Heating season 1 Collect the refrigerant in the...

Page 325: ...ressor Reassemble them in the reverse order after replacing the compressor Compressor replacement procedures 1 Remove both the top and bottom service panels front panels 3 Remove the wires that are secured to the frame and remove the frame Electric wiring Frame Service panel Control box Compressor cover front 2 Remove the control box and the compressor cover front 1 Remove the transformer box from...

Page 326: ... material Suction piping Protection for the compressor cover 6 Place protective materials on the insulation lining of the compressor cover and on the sealing material on the compressor suction pipe to protect them from the torch flame debraze the pipe and replace the compressor Crankcase heater Compressor covers right and left The inside of the compressor cover is lined with sound insulation mater...

Page 327: ...d replacement procedures To remove Solenoid valve block ASSY Remove the solenoid valve block coil cover solenoid valve coil and peripheral cables Remove the screw M5 that fixes the solenoid valve block and the supporting plate for solenoid valve block Cut the pipe at the position indicated on the next page with a pipe cutter Remove the pipe from the brazed A part Debraze B G parts total 6 places D...

Page 328: ...g solenoid valve block Solenoid valve block Supporting plate for solenoid valve block Screw M5 Brazing connecting pipe φ9 52 3 8 Brazing heat exchanger header side Brazing Solenoid valve block side Service patrs set supplied connecting pipe φ9 52 3 8 Brazing or debrazing pipes D φ28 6 1 1 8 E φ9 52 3 8 F φ9 52 3 8 G φ15 88 5 8 This figure does not show heat exchanger D C B E F G Removed Solenoid v...

Page 329: ...lenoid valve block ASSY SV4a SV4b SV4d replacement procedures on the front page H φ19 05 3 4 I φ15 88 5 8 Heat exchanger J φ12 7 1 2 K φ6 35 1 4 After removing Solenoid valve block ASSY Part A Refer to the next page Precautions for replacing Check valve Be sure to perform no oxidation brazing when brazing Place a wet towel on the check valve when heating pipes to keep the temperature of the valve ...

Page 330: ...88 5 8 CV10a CV9a 8 φ15 88 5 8 6 φ15 88 5 8 4 φ15 88 5 8 Q Check valve ASSY H 1 φ28 6 1 1 8 3 φ15 88 5 8 I CV8a K G J Angle of the pipes when replacing CV8a CV9a CV10a Figure as viewed from point Q 8 6 4 When replacing CV4a Remove the brazing 1 When replacing CV6a Remove the brazing 2 When replacing CV8a Remove the brazing 3 and 4 When replacing CV9a Remove the brazing 5 and 6 When replacing CV10a...

Page 331: ...k ASSY SV4a SV4b SV4c SV4d replacement procedures To remove Solenoid valve block ASSY Remove the solenoid valve block coil cover solenoid valve coil and peripheral cables Remove the screw M5 that fixes the solenoid valve block and the supporting plate for solenoid valve block Cut the pipe at the position indicated on the next page with a pipe cutter Remove the pipe from the brazed A part Debraze B...

Page 332: ...er 60 Bending R A φ12 7 1 2 After cutting pipe remove the pipe from the brazed A D φ15 88 5 8 Heat exchanger A φ12 7 1 2 B φ19 05 3 4 C φ15 88 5 8 Coil cover Solenoid valve coil SV4a SV4b SV4c SV4d Brazing connecting pipe φ9 52 3 8 Brazing heat exchanger header side Brazing Solenoid valve block side Service parts set supplied connecting pipe φ9 52 3 8 Refer to the next page for Check valve CV4a CV...

Page 333: ...d valve block ASSY SV4a SV4b SV4c SV4d replacement procedures on the front page Precautions for replacing Check valve Be sure to perform no oxidation brazing when brazing Place a wet towel on the check valve when heating pipes to keep the temperature of the valve from exceed ing 120 C 248 F After brazing check the condition around the brazing After confirming no leakage evacuate the air inside 1 P...

Page 334: ...V10a Figure as viewed from point Q 8 6 4 When replacing CV4a Remove the brazing 1 When replacing CV6a Remove the brazing 2 When replacing CV8a Remove the brazing 3 and 4 When replacing CV9a Remove the brazing 5 and 6 When replacing CV10a Remove the brazing 7 and 8 O N CV6a CV4a 2 φ15 88 5 8 7 φ15 88 5 8 5 φ25 4 1 CV10a CV9a 8 φ15 88 5 8 6 φ25 4 1 4 φ28 6 1 1 8 Q Check valve ASSY L 1 φ28 6 1 1 8 3 ...

Page 335: ... for starting replacement Check that the main power supply is OFF Check that no refrigerant is in the outdoor unit Heat exchanger A φ9 52 3 8 Compressor cover Low pressure twinning kit optional accessory B φ6 35 1 4 NO 1 Solenoid valve SV1a A NO 2 Capillary tube ASSY CP1 B Solenoid valve ASSY Ԙ Debraze A and B and remove solenoid valve ASSY from the unit ԙ Replace Solenoid valve SV1a or Capillary ...

Page 336: ... and remove the ceiling panel Work procedure Explanatory figure 1 To check the inside of the control box remove the two lock nuts on the control box cover 1 Check the terminal connection of the power wire or of the transmission line 2 Check the transformer 3 Check the address switch 2 When the control board is replaced the followings must be noted 1 Check that the board type is G GA or GB HB 2 Che...

Page 337: ...place the temperature sensor with the new one 4 Connect the lead wire of the temperature sensor se curely on the control board Work procedure Explanatory figure 1 Remove the service panel 1 For the pressure sensors PS1 and PS3 refer to 1 1 2 2 Remove the pressure sensor connector in trouble from the control board and insulate the connector 1 Liquid side pressure sensor CNP1 2 Intermediate part pre...

Page 338: ...ts Work procedure Explanatory figure 1 Remove the service panel Refer to 1 1 2 3 2 Remove the connector of the solenoid valve in trou ble 3 Remove the solenoid valve coil 1 The coils on the solenoid valves SVA SVB SVM1 and SVM2 can be serviced through the inspection door SVC is accessible for replacement by removing the four mounting screws on the rear panel and removing the panel if enough space ...

Page 339: ...sconnected there is a problem with the wiring to those connectors or with the connectors themselves 3 If nothing appears on the display under item 2 above AND the voltage between pins 1 and 3 of CNDC is within the range between 220 VDC and 380 VDC control board failure is suspected 3 Only the software version appears on the LED display 1 Only the software version appears while the transmission cab...

Page 340: ... 331 HWE0803A GB X LED Monitor Display on the Outdoor Unit Board 1 How to Read the LED on the Service Monitor 333 ...

Page 341: ... 332 ...

Page 342: ...s can be checked by making the switch setting that corresponds to No 517 in the LED display table Only item No 1 Software Version appears on the display if there is a wiring failure between the control board and the trans mission line power supply board or if the circuit board has failed 1 Display of numerical values Example When the pressure data sensor reads 18 8kg cm2 Item No 58 The unit of pre...

Page 343: ...er is turned off and then on again the count will resume from the time before the power was turned off Thus the time that differs the actual time will be displayed This also applies when a power failure occurs The system controller such as G B 50A adjusts the time once a day When the system controller is connected the time will be automatically updated to the correct current time after the time se...

Page 344: ...C and BC 0000 to 9999 Address and error codes highlighted B If no errors are detected appears on the dis play 3 1100000000 Relay out put display 2 Top 21S4a CH11 SV1a SV2 A A Bottom SV5b 4 0010000000 Relay out put display 3 Top SV4a SV4b SV4c SV5c SV4d SV9 Power sup ply for indoor transmis sion line A A Bottom 5 1010000000 6 0110000000 7 1110000000 Special control Retry opera tion Emergency operat...

Page 345: ...No 22 Unit No 23 Unit No 24 Bottom Unit No 25 Unit No 26 Unit No 27 Unit No 28 Unit No 29 Unit No 30 Unit No 31 Unit No 32 18 0100100000 Top Unit No 33 Unit No 34 Unit No 35 Unit No 36 Unit No 37 Unit No 38 Unit No 39 Unit No 40 Bottom Unit No 41 Unit No 42 Unit No 43 Unit No 44 Unit No 45 Unit No 46 Unit No47 Unit No 48 19 1100100000 Top Unit No 49 Unit No 50 Bottom 20 0010100000 Indoor unit Oper...

Page 346: ...t No47 Unit No 48 27 1101100000 Top Unit No 49 Unit No 50 Bottom 28 0011100000 29 1011100000 30 0111100000 31 1111100000 32 0000010000 33 1000010000 34 0100010000 35 1100010000 36 0010010000 37 1010010000 BC operation mode Cooling only ON Cooling only OFF Heating only ON Heating only OFF Mixed mode ON Mixed mode OFF Fan Stop B 38 0110010000 39 1110010000 Outdoor unit Operation mode Permissible sto...

Page 347: ...he unit is C 57 1001110000 THBOX 99 9 to 999 9 A A 58 0101110000 High pressure sensor data 99 9 to 999 9 A A The unit is kgf cm 2 59 1101110000 Low pressure sensor data 99 9 to 999 9 A A 60 0011110000 61 1011110000 62 0111110000 63 1111110000 64 0000001000 65 1000001000 66 0100001000 67 1100001000 68 0010001000 69 1010001000 70 0110001000 71 1110001000 Current data No SW1 Item Display Unit A B 1 R...

Page 348: ... to 9999 B Control data Hz 87 1110101000 Total frequency of each unit 0000 to 9999 A A 88 0001101000 COMP frequency 0000 to 9999 A A 89 1001101000 90 0101101000 91 1101101000 COMP operating fre quency 0000 to 9999 A A The unit is rps Output frequency of the inverter depends on the type of compressor and equals the integer multiples x1 x2 etc of the operating frequency of the com pressor 92 0011101...

Page 349: ...01011000 107 1101011000 108 0011011000 COMP operating cur rent DC 00 0 to 999 9 A A Peak value A 109 1011011000 110 0111011000 111 1111011000 COMP bus voltage 00 0 to 999 9 A A The unit is V 112 0000111000 113 1000111000 114 0100111000 115 1100111000 116 0010111000 Number of times the unit went into the mode to remedy wet vapor suction 0000 to 9999 B Current data No SW1 Item Display Unit A B 1 Rem...

Page 350: ...etion of backup control 122 0101111000 123 1101111000 COMP number of start stop events Upper 4 digits 0000 to 9999 A A Count up at start up The unit is Time 124 0011111000 COMP number of start stop events Lower 4 digits 0000 to 9999 A A 125 1011111000 126 0111111000 127 1111111000 128 0000000100 129 1000000100 Integrated operation time of compressor for rotation purpose 0000 to 9999 B The unit is ...

Page 351: ...VB15 SVC15 SVA16 SVB16 SVC16 137 1001000100 138 0101000100 Relay out put display BC Sub1 Top SVA1 SVB1 SVC1 SVA2 SVB2 SVC2 B Bottom SVA3 SVB3 SVC3 SVA4 SVB4 SVC4 139 1101000100 Top SVA5 SVB5 SVC5 SVA6 SVB6 SVC6 B Bottom SVA7 SVB7 SVC7 SVA8 SVB8 SVC8 140 0011000100 Top SVA9 SVB9 SVC9 SVA10 SVB10 SVC10 B Bottom SVA11 SVB11 SVC11 SVA12 SVB12 SVC12 141 1011000100 Top SVA13 SVB13 SVC13 SVA14 SVB14 SVC1...

Page 352: ... 152 0001100100 BC Main TH16 99 9 to 999 9 B 153 1001100100 BC Main 63HS1 99 9 to 999 9 B 154 0101100100 BC Main 63HS3 99 9 to 999 9 B 155 1101100100 BC Main SC11 99 9 to 999 9 B 156 0011100100 BC Main SH12 99 9 to 999 9 B 157 1011100100 BC Main SH13 99 9 to 999 9 B 158 0111100100 BC Main SC16 99 9 to 999 9 B 159 1111100100 BC Main LEV1 0000 to 2000 B LEV1 opening Fully open 2000 160 0000010100 BC...

Page 353: ...100 BC Main LEV2 0000 to 2000 B LEV2 opening Fully open 2000 168 0001010100 169 1001010100 170 0101010100 171 1101010100 172 0011010100 173 1011010100 174 0111010100 175 1111010100 176 0000110100 177 1000110100 Current data No SW1 Item Display Unit A B 1 Remarks 1234567890 LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8 OC OS 1 A The condition of either OC or OS is displayed individually B The condition of the en...

Page 354: ...rter Error details of inverter 0001 0120 A A 188 0011110100 Error history 6 0000 to 9999 B B 189 1011110100 Error details of inverter Error details of inverter 0001 0120 A A 190 0111110100 Error history 7 0000 to 9999 B B 191 1111110100 Error details of inverter Error details of inverter 0001 0120 A A 192 0000001100 Error history 8 0000 to 9999 B B 193 1000001100 Error details of inverter Error de...

Page 355: ...or unit Operation mode Permissible stop Standby Cooling Cooling main Heating Heating main A A 206 0111001100 207 1111001100 208 0000101100 Outdoor unit control mode Stop Thermo OFF Abnormal stop Scheduled control Initial start up Defrost Oil balance Low fre quency oil recovery A A 209 1000101100 Refrigerant recovery A A 210 0100101100 211 1100101100 Relay output display 1 Lighting Comp in op erati...

Page 356: ... unit is C 228 0010011100 THBOX 99 9 to 999 9 A A 229 1010011100 High pressure sensor data 99 9 to 999 9 A A The unit is kgf cm 2 230 0110011100 Low pressure sensor data 99 9 to 999 9 A A 231 1110011100 232 0001011100 233 1001011100 234 0101011100 235 1101011100 236 0011011100 237 1011011100 238 0111011100 239 1111011100 240 0000111100 241 1000111100 242 0100111100 Error history No SW1 Item Displa...

Page 357: ...l frequencies OC OS 0000 to 9999 B Control data Hz 258 0100000010 Total frequency of each unit 0000 to 9999 A A 259 1100000010 COMP frequency 0000 to 9999 A A 260 0010000010 261 1010000010 262 0110000010 263 1110000010 264 0001000010 All AK OC OS 0000 to 9999 B 265 1001000010 AK 0000 to 9999 A A 266 0101000010 FAN 0000 to 9999 A A Fan inverter output 267 1101000010 Fan inverter output fre quency 0...

Page 358: ...us voltage 00 0 to 999 9 A A The unit is V 283 1101100010 284 0011100010 285 1011100010 286 0111100010 287 1111100010 288 0000010010 COMP Operation time Upper 4 digits 0000 to 9999 A A The unit is h 289 1000010010 COMP Operation time Lower 4 digits 0000 to 9999 A A 290 0100010010 291 1100010010 292 0010010010 293 1010010010 Error history No SW1 Item Display Unit A B 1 Remarks 1234567890 LD1 LD2 LD...

Page 359: ...ts Lower 4 digits 0000 to 9999 A A 296 0001010010 297 1001010010 298 0101010010 299 1101010010 300 0011010010 Integrated operation time of compressor for rotation purpose 0000 to 9999 B The unit is h Error history No SW1 Item Display Unit A B 1 Remarks 1234567890 LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8 OC OS 1 A The condition of either OC or OS is displayed individually B The condition of the entire refri...

Page 360: ...10 0110110010 311 1110110010 312 0001110010 313 1001110010 314 0101110010 315 1101110010 316 0011110010 317 1011110010 318 0111110010 319 1111110010 320 0000001010 BC Main TH11 99 9 to 999 9 B 321 1000001010 BC Main TH12 99 9 to 999 9 B 322 0100001010 BC Main TH15 99 9 to 999 9 B 323 1100001010 BC Main TH16 99 9 to 999 9 B 324 0010001010 BC Main PS1 99 9 to 999 9 B 325 1010001010 BC Main PS3 99 9 ...

Page 361: ...o 999 9 B 336 0000101010 BC Sub2 TH25 99 9 to 999 9 B 337 1000101010 BC Sub2 LEV3 0000 to 2000 B 338 0100101010 BC Main LEV2 0000 to 2000 B 339 1100101010 340 0010101010 341 1010101010 342 0110101010 343 1110101010 344 0001101010 345 1001101010 346 0101101010 347 1101101010 348 0011101010 349 1011101010 350 0111101010 Current data No SW1 Item Display Unit A B 1 Remarks 1234567890 LD1 LD2 LD3 LD4 L...

Page 362: ...ss capacity code 0000 to 9999 0000 to 9999 358 0110011010 IC8 Address capacity code 0000 to 9999 0000 to 9999 359 1110011010 IC9 Address capacity code 0000 to 9999 0000 to 9999 360 0001011010 IC10 Address capacity code 0000 to 9999 0000 to 9999 361 1001011010 IC11 Address capacity code 0000 to 9999 0000 to 9999 362 0101011010 IC12 Address capacity code 0000 to 9999 0000 to 9999 363 1101011010 IC13...

Page 363: ...y code 0000 to 9999 0000 to 9999 382 0111111010 IC32 Address capacity code 0000 to 9999 0000 to 9999 383 1111111010 IC33 Address capacity code 0000 to 9999 0000 to 9999 384 0000000110 IC34 Address capacity code 0000 to 9999 0000 to 9999 385 1000000110 IC35 Address capacity code 0000 to 9999 0000 to 9999 386 0100000110 IC36 Address capacity code 0000 to 9999 0000 to 9999 387 1100000110 IC37 Address...

Page 364: ...city code 0000 to 9999 0000 to 9999 401 1000100110 402 0100100110 403 1100100110 404 0010100110 405 1010100110 406 0110100110 407 1110100110 408 0001100110 IC1 Suction temperature 99 9 to 999 9 B The unit is C 409 1001100110 IC2 Suction temperature 99 9 to 999 9 410 0101100110 IC3 Suction temperature 99 9 to 999 9 411 1101100110 IC4 Suction temperature 99 9 to 999 9 Data on indoor unit system No S...

Page 365: ...ure 99 9 to 999 9 424 0001010110 IC17 Suction temperature 99 9 to 999 9 425 1001010110 IC18 Suction temperature 99 9 to 999 9 426 0101010110 IC19 Suction temperature 99 9 to 999 9 427 1101010110 IC20 Suction temperature 99 9 to 999 9 428 0011010110 IC21 Suction temperature 99 9 to 999 9 429 1011010110 IC22 Suction temperature 99 9 to 999 9 430 0111010110 IC23 Suction temperature 99 9 to 999 9 431 ...

Page 366: ... 9 450 0100001110 IC43 Suction temperature 99 9 to 999 9 451 1100001110 IC44 Suction temperature 99 9 to 999 9 452 0010001110 IC45 Suction temperature 99 9 to 999 9 453 1010001110 IC46 Suction temperature 99 9 to 999 9 454 0110001110 IC47 Suction temperature 99 9 to 999 9 455 1110001110 IC48 Suction temperature 99 9 to 999 9 456 0001001110 IC49 Suction temperature 99 9 to 999 9 457 1001001110 IC50...

Page 367: ...ture 99 9 to 999 9 478 0111101110 IC21 Liquid pipe temperature 99 9 to 999 9 479 1111101110 IC22 Liquid pipe temperature 99 9 to 999 9 480 0000011110 IC23 Liquid pipe temperature 99 9 to 999 9 481 1000011110 IC24 Liquid pipe temperature 99 9 to 999 9 482 0100011110 IC25 Liquid pipe temperature 99 9 to 999 9 483 1100011110 IC26 Liquid pipe temperature 99 9 to 999 9 484 0010011110 IC27 Liquid pipe t...

Page 368: ...1110 IC43 Liquid pipe temperature 99 9 to 999 9 501 1010111110 IC44 Liquid pipe temperature 99 9 to 999 9 502 0110111110 IC45 Liquid pipe temperature 99 9 to 999 9 503 1110111110 IC46 Liquid pipe temperature 99 9 to 999 9 504 0001111110 IC47 Liquid pipe temperature 99 9 to 999 9 505 1001111110 IC48 Liquid pipe temperature 99 9 to 999 9 506 0101111110 IC49 Liquid pipe temperature 99 9 to 999 9 507 ...

Page 369: ...ress Count up display of number of connected units B 515 1100000001 BC BS TU address Count up display of number of connected units B 516 0010000001 OS address Count up display of number of connected units B 517 1010000001 Version Capacity S W version Refrigerant type Model and capacity Communication address A A 518 0110000001 OC address OC address display B 519 1110000001 520 0001000001 521 100100...

Page 370: ...0100001 IC12 Gas pipe temperature 99 9 to 999 9 535 1110100001 IC13 Gas pipe temperature 99 9 to 999 9 536 0001100001 IC14 Gas pipe temperature 99 9 to 999 9 537 1001100001 IC15 Gas pipe temperature 99 9 to 999 9 538 0101100001 IC16 Gas pipe temperature 99 9 to 999 9 539 1101100001 IC17 Gas pipe temperature 99 9 to 999 9 540 0011100001 IC18 Gas pipe temperature 99 9 to 999 9 541 1011100001 IC19 Ga...

Page 371: ...9 1111010001 IC37 Gas pipe temperature 99 9 to 999 9 560 0000110001 IC38 Gas pipe temperature 99 9 to 999 9 561 1000110001 IC39 Gas pipe temperature 99 9 to 999 9 562 0100110001 IC40 Gas pipe temperature 99 9 to 999 9 563 1100110001 IC41 Gas pipe temperature 99 9 to 999 9 564 0010110001 IC42 Gas pipe temperature 99 9 to 999 9 565 1010110001 IC43 Gas pipe temperature 99 9 to 999 9 566 0110110001 IC...

Page 372: ...99 9 583 1110001001 IC11SH 99 9 to 999 9 584 0001001001 IC12SH 99 9 to 999 9 585 1001001001 IC13SH 99 9 to 999 9 586 0101001001 IC14SH 99 9 to 999 9 587 1101001001 IC15SH 99 9 to 999 9 588 0011001001 IC16SH 99 9 to 999 9 589 1011001001 IC17SH 99 9 to 999 9 590 0111001001 IC18SH 99 9 to 999 9 591 1111001001 IC19SH 99 9 to 999 9 592 0000101001 IC20SH 99 9 to 999 9 593 1000101001 IC21SH 99 9 to 999 9...

Page 373: ...9 611 1100011001 IC39SH 99 9 to 999 9 612 0010011001 IC40SH 99 9 to 999 9 613 1010011001 IC41SH 99 9 to 999 9 614 0110011001 IC42SH 99 9 to 999 9 615 1110011001 IC43SH 99 9 to 999 9 616 0001011001 IC44SH 99 9 to 999 9 617 1001011001 IC45SH 99 9 to 999 9 618 0101011001 IC46SH 99 9 to 999 9 619 1101011001 IC47SH 99 9 to 999 9 620 0011011001 IC48SH 99 9 to 999 9 621 1011011001 IC49SH 99 9 to 999 9 62...

Page 374: ...99 9 633 1001111001 IC11SC 99 9 to 999 9 634 0101111001 IC12SC 99 9 to 999 9 635 1101111001 IC13SC 99 9 to 999 9 636 0011111001 IC14SC 99 9 to 999 9 637 1011111001 IC15SC 99 9 to 999 9 638 0111111001 IC16SC 99 9 to 999 9 639 1111111001 IC17SC 99 9 to 999 9 640 0000000101 IC18SC 99 9 to 999 9 641 1000000101 IC19SC 99 9 to 999 9 642 0100000101 IC20SC 99 9 to 999 9 643 1100000101 IC21SC 99 9 to 999 9...

Page 375: ...C 99 9 to 999 9 662 0110100101 IC40SC 99 9 to 999 9 663 1110100101 IC41SC 99 9 to 999 9 664 0001100101 IC42SC 99 9 to 999 9 665 1001100101 IC43SC 99 9 to 999 9 666 0101100101 IC44SC 99 9 to 999 9 667 1101100101 IC45SC 99 9 to 999 9 668 0011100101 IC46SC 99 9 to 999 9 669 1011100101 IC47SC 99 9 to 999 9 670 0111100101 IC48SC 99 9 to 999 9 671 1111100101 IC49SC 99 9 to 999 9 672 0000010101 IC50SC 99...

Page 376: ...0101 INV board S W version 0 00 to 99 99 A A 677 1010010101 678 0110010101 679 1110010101 Fan board S W version 0 00 to 99 99 A A 680 0001010101 681 1001010101 682 0101010101 683 1101010101 684 0011010101 685 1011010101 686 0111010101 687 1111010101 1 A The condition of either OC or OS is displayed individually B The condition of the entire refrigerant system is displayed ...

Page 377: ...01 Time of error detection 3 2 00 00 to 99 12 1 to 31 Year and month and date alternate display 696 0001110101 Time of error detection 4 00 00 to 23 59 Hour minute 697 1001110101 Time of error detection 4 2 00 00 to 99 12 1 to 31 Year and month and date alternate display 698 0101110101 Time of error detection 5 00 00 to 23 59 Hour minute 699 1101110101 Time of error detection 5 2 00 00 to 99 12 1 ...

Page 378: ... detection 9 2 00 00 to 99 12 1 to 31 Year and month and date alternate display 708 0010001101 Time of error detection 10 00 00 to 23 59 Hour minute 709 1010001101 Time of error detection 10 2 00 00 to 99 12 1 to 31 Year and month and date alternate display 710 0110001101 Time of last data backup be fore error 00 00 to 23 59 Hour minute 711 1110001101 Time of last data backup be fore error 2 00 00...

Page 379: ...ening 0000 to 9999 725 1010101101 IC12 LEV opening 0000 to 9999 726 0110101101 IC13 LEV opening 0000 to 9999 727 1110101101 IC14 LEV opening 0000 to 9999 728 0001101101 IC15 LEV opening 0000 to 9999 729 1001101101 IC16 LEV opening 0000 to 9999 730 0101101101 IC17 LEV opening 0000 to 9999 731 1101101101 IC18 LEV opening 0000 to 9999 732 0011101101 IC19 LEV opening 0000 to 9999 733 1011101101 IC20 L...

Page 380: ...IC43 LEV opening 0000 to 9999 757 1010111101 IC44 LEV opening 0000 to 9999 758 0110111101 IC45 LEV opening 0000 to 9999 759 1110111101 IC46 LEV opening 0000 to 9999 760 0001111101 IC47 LEV opening 0000 to 9999 761 1001111101 IC48 LEV opening 0000 to 9999 762 0101111101 IC49 LEV opening 0000 to 9999 763 1101111101 IC50 LEV opening 0000 to 9999 764 0011111101 IC1 Operation mode 0000 Stop 0001 Ventil...

Page 381: ...Operation mode 780 0011000011 IC17 Operation mode 781 1011000011 IC18 Operation mode 782 0111000011 IC19 Operation mode 783 1111000011 IC20 Operation mode 784 0000100011 IC21 Operation mode 785 1000100011 IC22 Operation mode 786 0100100011 IC23 Operation mode 787 1100100011 IC24 Operation mode 788 0010100011 IC25 Operation mode 789 1010100011 IC26 Operation mode 790 0110100011 IC27 Operation mode ...

Page 382: ...ration mode 809 1001010011 IC46 Operation mode 810 0101010011 IC47 Operation mode 811 1101010011 IC48 Operation mode 812 0011010011 IC49 Operation mode 813 1011010011 IC50 Operation mode 814 0111010011 IC1 filter 0000 to 9999 B Hours since last mainte nance h 815 1111010011 IC2 filter 0000 to 9999 816 0000110011 IC3 filter 0000 to 9999 817 1000110011 IC4 filter 0000 to 9999 818 0100110011 IC5 filt...

Page 383: ...011 IC25 filter 0000 to 9999 839 1110001011 IC26 filter 0000 to 9999 840 0001001011 IC27 filter 0000 to 9999 841 1001001011 IC28 filter 0000 to 9999 842 0101001011 IC29 filter 0000 to 9999 843 1101001011 IC30 filter 0000 to 9999 844 0011001011 IC31 filter 0000 to 9999 845 1011001011 IC32 filter 0000 to 9999 846 0111001001 IC33 filter 0000 to 9999 847 1111001011 IC34 filter 0000 to 9999 848 0000101...

Page 384: ... to 9999 858 0101101011 IC45 filter 0000 to 9999 859 1101101011 IC46 filter 0000 to 9999 860 0011101011 IC47 filter 0000 to 9999 861 1011101011 IC48 filter 0000 to 9999 862 0111101011 IC49 filter 0000 to 9999 863 1111101011 IC50 filter 0000 to 9999 Data on indoor unit system No SW1 Item Display Unit A B 1 Remarks 1234567890 LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8 OC OS 1 A The condition of either OC or OS...

Page 385: ...ent effec tive value 1 99 9 to 999 9 A A 873 1001011011 Power factor phase an gle 1 99 9 to 999 9 A A The unit is deg 874 0101011011 875 1101011011 876 0011011011 877 1011011011 878 0111011011 879 1111011011 880 0000111011 Control board Reset counter 0 to 254 A A The unit is time 881 1000111011 INV board Reset counter 0 to 254 A A 882 0100111011 883 1100111011 884 0010111011 Fan board Reset counte...

Page 386: ...00111 899 1100000111 900 0010000111 901 1010000111 902 0110000111 903 1110000111 904 0001000111 905 1001000111 906 0101000111 907 1101000111 1020 0011111111 1021 1011111111 1022 0111111111 1023 1111111111 Other types of data No SW1 Item Display Unit A B 1 Remarks 1234567890 LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8 OC OS 1 A The condition of either OC or OS is displayed individually B The condition of the e...

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