Mitsubishi Electric R410A Service Handbook Download Page 43

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[2-7 Example System with an MA Remote Controller ]

HWE14080

2-7-3

Grouped Operation of Units in Separate Refrigerant Circuits

(1) Sample control wiring

(2) Cautions

1) ME remote controller and MA remote controller can not

both be connected to the same group of indoor units.

2) No more than 2 MA remote controllers can be connected

to a group of indoor units.

3) Do not connect the terminal blocks (TB5) on the indoor

units that are connected to different outdoor units with
each other.

4) Replacement of male power jumper connector (CN41)

must be performed only on one of the outdoor units.

5) Provide grounding to S terminal on the terminal block for

transmission line for centralized control (TB7) on only
one of the outdoor units.

6) A transmission booster is required in a system to which

more than 32 indoor units (26 units if one or more indoor
units of the 72 model or above is connected) are con-
nected.

Refer to the DATABOOK for further information about

how many booster units are required for a given system.

(3) Maximum allowable length

1) Indoor/outdoor transmission line

Maximum distance (1.25mm

[AWG16] or larger)

L11+L12

200m [656ft]

L21+L22

200m [656ft]

2) Transmission line for centralized control

L21+L31

200m [656ft]

3) MA remote controller wiring

Same as 2-7-1

4) Maximum line distance via outdoor unit

(1.25mm

[AWG16] or larger)

L12(L11)+L31+L22(L21)

500m [1640ft]

TB5

TB15

1 2

TB5

TB15

1 2

A B

TB5

1 2

TB15

TB5

TB15

1 2

TB5 TB15

A B

TB5

TB15

1 2

A B

Group

M1 M2 M1

M2 M1

M1 M2

Interlock operation with
the ventilation unit

L12

L22

L11

L21

TB3

TB7

To be connected

To be left

unconnected

To be left

unconnected

OS1

TB3

TB7

OS2

TB3

TB7

M1 M2

TB3

TB7

OS1

TB3

TB7

OS2

TB3

TB7

M1 M2

L31

Leave the male

connector on

CN41 as it is.
SW5-1 OFF

Leave the male

connector on

CN41 as it is.
SW5-1 OFF

Leave the male

connector on

CN41 as it is.
SW5-1 OFF

Leave the male

connector on

CN41 as it is.
SW5-1 OFF

Leave the male

connector on

CN41 as it is.
SW5-1 OFF

SW5-1 OFF

Move the male connector
from CN41 to CN40.

To be left

unconnected

To be left

unconnected

To be left

unconnected

Summary of Contents for R410A

Page 1: ......

Page 2: ...e certain components of the unit to corrode which can result in refrigerant leakage wa ter leakage injury electric shock malfunc tions smoke or fire Do not try to defeat the safety features of the unit or make unauthorized setting changes Forcing the unit to operate the unit by de feating the safety features of the devices such as the pressure switch or the tempera ture switch making unauthorized ...

Page 3: ...e objects on the unit To reduce the risk of water leakage and mal functions do not turn off the power immedi ately after stopping operation Leave the unit turned on for at least 5 minutes before turning off the power Do not install the unit over things that are vulnerable to water damage from condensa tion dripping To reduce the risk of injury electric shock and malfunctions do not touch or allow ...

Page 4: ...at are required Fail ing to remove the packing materials or fail ing to install required accessories may result in refrigerant leakage oxygen depri vation smoke or fire Consult your dealer and take appropriate measures to safeguard against refrigerant leakage and resultant oxygen starvation An installation of a refrigerant gas detector is recommended Any additional parts must be installed by the d...

Page 5: ...e and oxygen de privation keep the field installed pipes out of contact with the edges of components To reduce the risk of pipe bursting and ex plosion due to abnormal pressure rise do not allow any substances other than R410A such as air to enter the refrigerant circuit To keep the ceiling and floor from getting wet due to condensation properly insulate the pipes Wiring Work To reduce the risk of...

Page 6: ...ilure and fire To reduce the risk of refrigerant and water leakage check the pipe supports and insu lation for damage during inspection or re pair and replace or repair the ones that are found to be deteriorated Additional Precautions To avoid damage to the unit use appropri ate tools to install inspect or repair the unit Turn on the power at least 12 hours before starting operation Do not turn of...

Page 7: ...s and keep both ends sealed until immediately before the brazing or flare connection work Store joints in plastic bags There is a risk of deterioration of the refrigerant oil or a compressor failure if dust dirt or moisture enters the refriger ant circuit Apply ester oil ether oil or a small amount of alkyl benzene to flares and flanges The use and accidental infiltration of mineral oil into the s...

Page 8: ...t Electrical Wiring Diagrams 79 4 4 Transmission Booster Electrical Wiring Diagrams 84 Chapter 5 Control 5 1 Dipswitch Functions and Factory Settings 87 5 2 Outdoor Unit Control 94 5 3 Operation Flowcharts 107 Chapter 6 Test Run 6 1 Read before Test Run 115 6 2 MA and ME Remote Controller Functions and Specifications 116 6 3 Making the Group and Interlock Settings from an ME Remote Controller 117 ...

Page 9: ... 255 8 7 Troubleshooting Outdoor Unit Fan Problems 257 8 8 Troubleshooting LEV Problems 258 8 9 Troubleshooting Inverter Problems TLMU 264 8 10 Troubleshooting Inverter Problems YLMU 276 8 11 Control Circuit TLMU 285 8 12 Control Circuit YLMU 290 8 13 Measures for Refrigerant Leakage 293 8 14 Compressor Replacement Instructions 295 8 15 Heat exchanger Replacement Instructions 297 8 16 Troubleshoot...

Page 10: ...erials Refrigerant and Refrigerant Oil 5 1 2 1 Piping Materials 5 1 2 2 Storage of Piping Materials 6 1 2 3 Pipe Processing 6 1 2 4 Characteristics of the New and Conventional Refrigerants 7 1 2 5 Refrigerant Oil 8 1 3 Working with Refrigerant Piping 9 1 3 1 Pipe Brazing 9 1 3 2 Air Tightness Test 10 1 3 3 Vacuum Drying 11 1 3 4 Refrigerant Charging 12 1 4 Precautions for Wiring 13 ...

Page 11: ... 2 HWE14080 GB ...

Page 12: ...ols refer to the following page s 1 1 2 Tool Preparation 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 contamin...

Page 13: ...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 used if a check v...

Page 14: ...lect piping materials that meet the requirements set forth in ASTM B280 4 Thickness and refrigerant type indicated on the piping materials Ask the pipe manufacturer for the symbols indicated on the piping material for new refrigerant R410A 5 Flare processing Select piping materials that meet the requirements set forth in ASTM 6 Flare nut Select piping materials that meet the requirements set forth...

Page 15: ... should be sealed until just before 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 1 2 3 Pipe Proces...

Page 16: ...entire refrigerant does not need to be replaced 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 Refrigera...

Page 17: ...0A Ester oil 1 Contaminants 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 s...

Page 18: ...3 that requires no flux when brazing between copper 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 c...

Page 19: ...into account 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 un...

Page 20: ...on 6 Special vacuum drying 5 Procedures for stopping vacuum pump To prevent the reverse flow of vacuum pump oil open the relief valve on the vacuum pump side or draw in air by loosening the charge hose and then stop the operation The same procedures should be followed when stopping a vacuum pump with a reverse flow check valve 6 Special vacuum drying When 5Torr 650Pa or lower degree of vacuum cann...

Page 21: ...igerant will change 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 If the refrigerant leaks out it may be replenished The entire refrigerant does not need to be replaced Charge refrigerant in the liquid state Refer to the followin...

Page 22: ...that has accumulated in the compressor Before connecting wiring to TB7 check that the voltage has dropped below 20 VDC When a system controller is connected to the centralized control transmission cable to which power is supplied from the out door unit power jumper on the outdoor unit is connected to CN40 be aware that power can be supplied to the centralized control transmission and the system co...

Page 23: ...tening the screw mark a line through the screw head washer and terminals with a permanent marker Example Poor contact caused by loose screws may result in overheating and fire Continued use of the damaged circuit board may cause overheating and fire Daisy chain transmission line only Indoor outdoor transmission line terminal block and centralized controller transmission line Mark a line Place the ...

Page 24: ...ller 30 2 7 1 Single Refrigerant System Automatic Indoor Outdoor Address Startup 30 2 7 2 Single Refrigerant System with Two or More LOSSNAY Units 32 2 7 3 Grouped Operation of Units in Separate Refrigerant Circuits 34 2 7 4 System with a Connection of System Controller to Centralized Control Transmission Line 36 2 7 5 System with a Connection of System Controller to Indoor Outdoor Transmission Li...

Page 25: ... 16 HWE14080 GB ...

Page 26: ...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 connectable in door units Types of connectable in door units 72 36...

Page 27: ...lectric shock because the main circuit capacitor will be charged Refer to the wiring nameplate for details When the service work is finished reconnect the connector CNINV on the fan board and the connector CNFAN on the INV board or the connector CNFAN2 on the capacitor board 11 When connecting wires to TB7 check that the voltage is 20 V DC or less 12 When the power is on the compressor is energize...

Page 28: ...connecting PAR 30MAAU use a 0 3mm2 sheathed cable 5 ME remote controller refers to ME remote controller and Simple ME Remote Controller Cable type Facility type All facility types Type Shielded cable CVVS CPEVS MVVS Number of cores 2 core cable Cable size 1 25mm2 AWG16 or more or ø1 2mm or more Maximum transmission line distance between the outdoor unit and the far thest indoor unit 200 m 656ft ma...

Page 29: ... OC OS1 and OS2 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 4 When setting the switch SW4 of the control board set it with the outdoor unit power on Refer to the following page s 5 1 1 Outdoor Unit Switch Functions and Factory Settin...

Page 30: ...he smallest address of all the indoor units in the same group 101 Sub remote controller RC 151 to 200 2 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 connected to the system Main CITY MULTI outdoor unit OC OS1 OS2 00 51 to 100 1 3 Assign sequential addresse...

Page 31: ... the indoor 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 configu ration Connection to the system con troller Power supply unit for transmission lines Group operation of units in a sys tem with multiple outdoor units Power supply...

Page 32: ...ct on the indoor units set SW1 9 and SW1 10 to ON With these settings made the power start stop function becomes disabled To use the auto recovery function after power failure while these settings are made set SW1 5 to ON 2 4 6 Miscellaneous Settings Cooling only setting for the indoor unit Cooling only model Factory setting SW3 1 OFF When using indoor unit as a cooling only unit set SW3 1 to ON F...

Page 33: ... from the outdoor unit that is designated as OC if multiple outdoor units in the same system 7 If the formula TH7 5 holds true the fan will not go into operation when the contact receives signal input 8 When using a base heater change the setting using SW4 When using a base heater error output will not be available Type Usage Function Terminal to be used 1 Option Input Prohibiting cooling heating ...

Page 34: ...DC15V Contact 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...

Page 35: ...based on the compressor volume and does not necessarily correspond with the actual capacity 5 Notes on using demand control in combination with the low noise mode To enable the low noise mode it is necessary to short circuit 1 2 pin of CN3D on the outdoor unit whose SW6 8 is set to OFF When SW6 8 is set to ON on all outdoor units the following operations cannot be performed Performing 4 step deman...

Page 36: ...it Open 88 38 75 63 Short circuit 75 25 63 50 12 levels of on DE MAND No 2 CN3D 1 2P Open 1 3P Open Short circuit No 3 CN3D 1 2P Open Short circuit Open Short circuit No 1 CN3D 1 2P 1 3P Open Short circuit Open Short circuit Open Short circuit Open Short circuit Open Open 100 67 92 84 67 34 59 50 Short circuit 67 34 59 50 34 0 25 17 Short circuit Open 92 59 84 75 59 25 50 42 Short circuit 84 50 75...

Page 37: ...tup Connection of multiple LOSS 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 System configuration Connection to the system controlle...

Page 38: ... 2 6 System Connection Example 29 HWE14080 GB 2 Restrictions ...

Page 39: ...ing page s 2 7 2 Single Refrigerant System with Two or More LOSSNAY Units page 32 3 Maximum allowable length 1 Indoor outdoor transmission line Maximum distance 1 25mm2 AWG16 or larger L1 L2 L3 L4 200m 656ft L1 L2 L11 L12 L13 200m 656ft 2 Transmission line for centralized control No connection is required 3 MA remote controller wiring Maximum overall line length 0 3 to 1 25mm2 AWG22 to 16 m1 200m ...

Page 40: ... block on the MA re mote controller Non polarized two wire When performing a group operation of indoor units that have different functions Automatic indoor outdoor ad dress setup is not available 4 LOSSNAY connection Connect terminals M1 and M2 on the terminal block TB5 on the indoor unit IC to the appropriate terminals on the terminal block TB5 on LOSSNAY LC Non po larized two wire Interlock oper...

Page 41: ...her information about how many booster units are required for a given system 3 Maximum allowable length 1 Indoor outdoor transmission line Same as 2 7 1 2 Transmission line for centralized control No connection is required 3 MA remote controller wiring Same as 2 7 1 L2 TB3 51 52 TB7 S TB3 TB7 S IC TB5 S TB15 1 2 01 IC TB5 S TB15 1 2 02 A B MA A B MA LC TB5 S 05 IC TB5 S 1 2 TB15 IC TB5 S TB15 1 2 ...

Page 42: ... as OC OS1 and OS2 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 Proce dures Unit or controller Address setting range Setting method Notes Factory setting 1 Indoor unit Main unit IC 01 to 50 Assign the smallest ad dress to the main unit in the group To perform a group opera tion of indoor units that have differe...

Page 43: ... 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 L21 L31 200m 656ft 3 MA remote controller wiring Same as 2 7 1 4 Maximum line distance via outdoor unit 1 25mm2 AWG16 or larger L12 L11 L31 L22 L21 500m 1640ft IC TB5 S TB15 1 2 01 IC TB5 S TB15 1 2 03 A B MA A B MA LC TB5 S 07 IC TB5 S 1 2 ...

Page 44: ...l and the S terminal on the terminal block TB7 on the out door unit whose power jumper connector is mated with CN40 3 MA remote controller wiring Same as 2 7 1 When 2 remote controllers are connected to the sys tem Same as 2 7 1 Group operation of indoor units Same as 2 7 1 4 LOSSNAY connection Same as 2 7 2 5 Switch setting Address setting is required as follows 5 Address setting method The outdo...

Page 45: ...e DATABOOK for further information about how many booster units are required for a given system 8 When a power supply unit is connected to the transmission 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 2 7 3 2 Transmission line for centralized control L31 L32 L21 200m 656ft 3 MA r...

Page 46: ...Group operation of indoor units Same as 2 7 1 4 LOSSNAY connection Connect terminals M1 and M2 on the terminal block TB5 on the indoor unit IC to the appropriate terminals on the terminal block for indoor outdoor transmission line TB5 on LOSSNAY LC Non polarized 2 core cable Indoor units must be interlocked with the LOSSNAY unit using the system controller Refer to the operation man ual for the sy...

Page 47: ... about how many booster units are required for a given system 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 L31 L21 200m 656ft 3 MA remote controller wiring Same as 2 7 1 4 Maximum line distance via outdoor unit 1 25mm2 AWG16 or larger L25 L31 L1...

Page 48: ...t the earth terminal and the S terminal on the terminal block TB7 on the out door unit whose power jumper connector is mated with CN40 3 MA remote controller wiring Same as 2 7 1 When 2 remote controllers are connected to the sys tem Same as 2 7 1 Group operation of indoor units Same as 2 7 1 4 LOSSNAY connection Connect terminals M1 and M2 on the terminal block TB5 on the indoor units IC to the a...

Page 49: ...ximum 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 the Simple re mote controller use cables that meet ...

Page 50: ... or controller Address setting range Setting method Notes Factory setting 1 Indoor unit Main unit IC 01 to 50 Assign the smallest ad dress to the main unit in the group To perform a group operation of indoor units that have differ ent functions desig nate the indoor unit in the group with the greatest number of functions as the main unit 00 Sub unit Assign sequential num bers starting with the ad ...

Page 51: ...o the DATABOOK for further information about how many booster units are required for a given system 11 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 2 7 3 2 Transmission line for centralized control Same as 2 7 4 3 MA remo...

Page 52: ...est number of functions as the main unit 00 Sub unit Assign sequential num bers starting with the ad dress of the main unit in the same group 1 Main unit address 1 main unit address 2 main unit ad dress 3 etc MA re mote con troller Main re mote con troller MA No settings required Main Sub remote controller MA Sub remote controller Settings to be made ac cording to the remote con troller function s...

Page 53: ...D f 40 131 or less 1 1 If the piping length exceeds 40 meters but does not exceed 90 meters use one size larger pipes for indoor unit liquid pipes Height difference 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 units h 15 49 or less 2 2 If the height difference between indoor units exceeds 15 meters...

Page 54: ...en indoor units exceeds 15 meters but does not exceed 30 meters use one size larger pipes for indoor unit liquid pipes Between outdoor units h2 0 1 0 3 or less Indoor Indoor Indoor Indoor Indoor Indoor Indoor Indoor E L H a h1 h2 b 2 1 c 3 d 4 e 5 f 6 g 7 i 8 C E F G I J K M B D A First branch Note To downstream units Note Total sum of downstream unit model numbers in the table is the sum of the m...

Page 55: ...s if the furthest piping length OU from IU exceeds 40 m 131 ft ø28 58 1 1 8 144 model ø12 7 1 2 ø28 58 1 1 8 168 model ø15 88 5 8 ø28 58 1 1 8 192 model ø15 88 5 8 ø28 58 1 1 8 216 model ø15 88 5 8 ø28 58 1 1 8 240 model ø15 88 5 8 ø28 58 1 1 8 264 312 model ø19 05 3 4 ø34 93 1 3 8 336 360 model ø19 05 3 4 ø41 28 1 5 8 model Pipe diameter mm inch 06 15 models Liquid pipe ø6 35 1 4 Gas pipe ø12 7 1...

Page 56: ...f the refrigerant pipe between the first distributor or the second distributor and outdoor units The outdoor units that can be used in combination are only the 120 model and lower Liquid pipe size mm inch Gas pipe size mm inch ø19 05 3 4 ø34 93 1 3 8 Liquid pipe size mm inch Gas pipe size mm inch 72 model ø9 52 3 8 ø22 2 7 8 96 model 120 model ø12 7 1 2 ø28 58 1 1 8 ...

Page 57: ... 2 10 Restrictions on Refrigerant Pipes 48 HWE14080 GB ...

Page 58: ...ce and Refrigerant Circuit Components of Outdoor Unit 51 3 1 1 External Appearance of Outdoor Unit 51 3 1 2 Outdoor Unit Refrigerant Circuits 53 3 2 Outdoor Unit Refrigerant Circuit Diagrams 56 3 3 Functions of the Major Components of Outdoor Unit 57 3 4 Functions of the Major Components of Indoor Unit 60 ...

Page 59: ... 50 HWE14080 GB ...

Page 60: ...d Refrigerant Circuit Components of Outdoor Unit 3 1 1 External Appearance of Outdoor Unit 1 PUHY P72 P96TLMU PUHY P72 P96YLMU Fan guard Fan guard Fan guard Fan Fan Fan Control board Control board Control board Heat exchanger Heat exchanger Heat exchanger Front panels Front panels Front panels Fin guard Fin guard Fin guard Side panels Side panels Side panels Transformer box YLMU only Transformer b...

Page 61: ...2 PUHY P120 P144 P168TLMU PUHY P120 P144 P168YLMU Fan guards Fan guards Fans Fans Control box Control box Fan box Fan box Heat exchanger Heat exchanger Transformer box YLMU only Transformer box YLMU only Front panels Front panels Fin guard Fin guard Side panel Side panel Side panel Side panel ...

Page 62: ...sor 63HS1 High pressure switch 63H1 Low pressure sensor 63LS Check valve CV1 Accumulator 4 way valve 21S4a 4 way valve 21S4b Linear expansion valve LEV1 Linear expansion valve LEV2b Linear expansion valve LEV2a Subcool coil Solenoid valve SV9 Solenoid valve SV1a Oil separator Compressor Compressor cover Liquid side valve BV2 Gas side valve BV1 High pressure check joint CJ1 Low pressure check joint...

Page 63: ...V2a Linear expansion valve LEV2b Linear expansion valve LEV2b Linear expansion valve LEV1 Linear expansion valve LEV1 Subcool coil Subcool coil 4 way valve 21S4a 4 way valve 21S4a 4 way valve 21S4b 4 way valve 21S4b Check valve CV1 Check valve CV1 Compressor Compressor Oil separator Oil separator Solenoid valve SV1a Solenoid valve SV1a Gas side valve BV1 Gas side valve BV1 Liquid side valve BV2 Li...

Page 64: ...id valve SV1a Low pressure check joint 4 way valve 21S4c High pressure swich 63H1 High pressure check joint CJ1 Compressor cover Compressor Solenoid valve SV2 Oil separator Accumulator Liquid side valve BV2 for indoor unit Gas side valve BV1 for indoor unit Solenoid valve SV9 Check valve CV1 4 way valve 21S4b 2 way valve SV5b Subcool coil Linear expansion valve LEV1 Linear expansion valve LEV2b Li...

Page 65: ...EV1 SV1a 63H1 ST3 ST6 63HS1 ST7 21S4b CP1 CJ1 CV1 ST1 ST2 BV2 BV1 SV9 ACC Comp O S HEX FAN Motor 21S4a LEV2a LEV2b CP3 SV2 TH4 TH2 TH3 TH7 CJ2 CP2 63LS TH6 TH5 SCC LEV1 ACC 63H1 21S4a ST6 63HS ST7 21S4c CJ1 Comp O S CV1 LEV2a LEV2b ST2 BV2 BV1 21S4b SV5b SV9 ST1 FAN2 for HEX2 FAN1 for HEX1 CP2 SV2 SV1a ST3 CP1 HEX2 TH7 63LS CJ2 TH2 HEX1 TH3 TH6 TH4 TH5 Motor Motor ...

Page 66: ...297ȍ YLMU High pressure sensor 63HS1 1 Detects high pressure 2 Regulates frequency and provides high pressure protection Low pressure sensor 63LS 1 Detects low pressure 2 Provides low pressure protection Pressure switch 63H1 1 Detects high pressure 2 Provides high pres sure protection 4 15MPa 601psi OFF setting Power supply trans former Transformer YLMU only Decreases the power sup ply voltage 460...

Page 67: ...2 Controls defrosting during heating opera tion 3 Detects subcool at the heat exchanger outlet and controls LEV1 based on HPS data and TH3 data TH7 Outdoor tem perature 1 Detects outdoor air temperature 2 Controls fan operation TH5 Accumulator in let temperature LEV2 is controlled based on the 63LS and TH5 val ues TH6 Liquid pipe temperature Controls LEV1 based on TH2 TH3 and TH6 data THHS Inverte...

Page 68: ... from that of the indoor LEV Refer to the fol lowing page s 8 8 Trouble shooting LEV Problems page 258 LEV2a Refrigerant flow adjustment Adjusts refrigerant flow during heating DC12V Opening of a valve driven by a stepping motor 2100 pulses Max 3000 pulses Refer to the sec tion Continuity Test with a Tes ter Continuity be tween white and orange Continuity be tween yellow brown and blue LEV2b Refri...

Page 69: ...uity between white red and or ange 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...

Page 70: ... 4 1 2 Transformer Box 66 4 1 3 Fan Box 67 4 2 Outdoor Unit Circuit Board Components 68 4 2 1 Control Board 68 4 2 2 M NET Board Transmission Power Supply Board 69 4 2 3 INV Board 70 4 2 4 Fan Board 73 4 2 5 Noise Filter 75 4 2 6 Connect Board 78 4 3 Outdoor Unit Electrical Wiring Diagrams 79 4 4 Transmission Booster Electrical Wiring Diagrams 84 ...

Page 71: ... 62 HWE14080 GB ...

Page 72: ...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 confirm that the capacitor voltage inverter main circuit has dropped to 20 VDC or less It takes about 10 minutes to discharge electricity after the power supply is turned off 8 When the power is turned on th...

Page 73: ...CNFAN back to the inverter board after servicing 7 When opening or 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 confirm that the capacitor voltage inverter main circuit has dropped to 20 VDC or less It takes about 10 minu...

Page 74: ...tor CNINV back to the fan board and reconnect the connector CN1 or CNFAN back to the inverter board after servicing 7 When opening or 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 confirm that the capacitor voltage inverte...

Page 75: ... 4 1 Outdoor Unit Circuit Board Arrangement 66 HWE14080 GB 4 1 2 Transformer Box 1 Transformer Box PUHY P72 P96 P120 P144 P168YLMU Transformer T02 Transformer T03 ...

Page 76: ... service after disconnecting the fan board connector CNINV and the connect board connector CN103 To plug or unplug connectors check that the outdoor unit fan is not rotating and that the voltage of capacitor in the main circuit is 20 VDC or below The capacitor may collect a charge and cause an electric shock when the outdoor unit fan rotates in windy conditions 3 Reconnect the connector CNINV back...

Page 77: ...r ON OFF signal output Error signal output CN41 Centralized control power supply OFF External signal input contact input F01 250 VAC 3 15A T CNRYA CNRYB 72 drive signal output Sensor input CN2 2A Serial communication signal input GND CN4 4A 5 VDC output GND Serial communication GND 16 VDC GND FAN INV board 1 17 VDC 17 VDC GND INV board CN332 18 VDC output GND FAN INV board 2 CNVCC2 12 VDC output 5...

Page 78: ...02 CNS2 Transmission line input output for centralized control system 30VDC CNIT 12VDC Input GND 5VDC Input 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 centralized control transmission line TB3 Indoor outdoor transmission block Ground terminal for transmiss...

Page 79: ...tor CNINV back to the fan board and reconnect the connector CN1 or CNFAN back to the inverter board after servicing 6 When the power is turned on the compressor is energized even while it is not operating Before turning on the power discon nect all power supply wires from the compressor terminal block and measure the insulation resistance of the compressor Check the compressor for a ground fault I...

Page 80: ...inverter board connector CN1 or CNFAN To plug or unplug connectors check that the outdoor unit fan is not rotating and that the voltage of capac itor in the main circuit is 20 VDC or below The capacitor may collect a charge and cause an electric shock when the outdoor unit fan rotates in windy conditions Refer to the wiring nameplate for details 5 To connect wiring to TB7 check that the voltage is...

Page 81: ...d connector CN1 or CNFAN To plug or unplugb connectors check that the outdoor unit fan is not rotating and that the voltage of ca pacitor in the main circuit is 20 VDC or below The capacitor may collect a charge and cause an electric shock when the outdoor unit fan rotates in windy conditions Refer to the wiring nameplate for details 5 To connect wiring to TB7 check that the voltage is 20 VDC or b...

Page 82: ...pply is turned off 2 Control box houses high temperature parts Be well careful even after turning off the power source 3 Perform the service after disconnecting the fan board connector CNINV and the inverter board connector CN1 or CNFAN To plug or unplugconnectors check that the outdoor unit fan is not rotating and that the voltage of capac itor in the main circuit is 20 VDC or below The capacitor...

Page 83: ...l even after turning off the power source 3 Perform the service after disconnecting the fan board connector CNINV and the inverter board connector CN1 or CNFAN To plug or unplugconnectors check that the outdoor unit fan is not rotating and that the voltage of capac itor in the main circuit is 20 VDC or below The capacitor may collect a charge and cause an electric shock when the outdoor unit fan r...

Page 84: ...und TB32 Bus voltage input P CN110 Power supply detection signal output CN012 Output CN001 Input CNR1 Rush current protection resistor R1 connection TB21 Input output L1 TB22 Input output L2 TB23 Input output L3 F002 Fuse 250 VAC 6 3A T F001 Fuse 250 VAC 6 3A T TB31 Bus voltage output P X001 Electromagnetic relay 72C CN72C 72C drive signal input L3 L2 L1 L2 L1 ...

Page 85: ...2 Output CN001 Input CNR1 Rush current protection registor R1 connection TB21 Input L1 TB22 Input L2 TB23 Input L3 F002 Fuse 250 VAC 6 3A T F001 Fuse 250 VAC 6 3A T TB42 Bus voltage output N X001 Electromagnetic relay 72C CN72C 72C drive input F003 Fuse 250 VAC 6 3A T Diode stack Rectifier voltage input Diode stack output Output Diode stack input L3 L2 L1 L2 L1 ...

Page 86: ...44 P168YLMU CN4 Output Rectified 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 87: ... houses high temperature parts Be well careful even after turning off the power source 3 Perform the service after disconnecting the fan board connector CNINV and the connector board connector CN103 To plug or unplugconnectors check that the outdoor unit fan is not rotating and that the voltage of capac itor in the main circuit is 20 VDC or below The capacitor may collect a charge and cause an ele...

Page 88: ...operation Lit Error Blink 4 SC W 2 CN110 black P 63H1 4 1 SW5 10 5 CN3D 1 CPU power supply circuit black CNAC2 1 3 ON OFF 10 SWU1 CN212 red 6 2 CN80 F301 AC250V 15A T CNTYP5 green LED4 CPU in operation LED1 Normal operation Lit Error Blink CN801 red IPM SC P1 TB P C011 C016 TB22 SWP1 RSH01 RSH03 FAN Board 63LS L Noise Filter 2 CN507 black 3 6 4 CN213 green CN012 SV9 Function setting LED1 Display s...

Page 89: ...2 blue 1 3 4 CN83 black CN4A black 4 1 2 3 3 2 4 1 CN4 black CN2 3 1 2 CN2A 3 2 6 1 SW001 IPM 1 3 SW001 2 1 2 3 4 5 6 OFF ON 3 1 2 6 1 4 1 2 3 4 5 1 CNSNR 5 4 3 2 1 1 4 4 1 6 CNINV 2 1 4 3 1 3 1 1 2 1 6 5 4 FAN Board ON 6 RSH01 2 1 CN332 blue 5 4 3 2 OFF CNVDC IPM 1 1 CN61 green 8 2 P 63H1 1 5 6 CN80 F301 AC250V 15A T LED4 CPU in operation LED1 Normal operation Lit Error Blink CN801 red FAN Board ...

Page 90: ... 2 red CNPS 1 3 2 1 TP1 TP2 TB3 2 3 TB7 M1 M2 M1 M2 S 5 1 2 3 4 1 2 LEV2a 1 2 3 4 6 1 2 3 4 5 6 1 2 2 CN82 blue 1 3 4 CN83 black 1 CN4A black 4 1 3 1 2 3 3 2 4 1 CN4 black CN2 3 CN81 green 1 2 CN2A 3 2 6 1 U V W 3 CNFAN F301 AC250V 15A T SW001 IPM CNVDC RSH01 1 3 CN80 SW001 2 1 2 3 4 5 6 1 8 3 1 C310 C311 2 CN2 7 CNINV 6 1 4 1 2 3 4 5 CNSNR 1 2 1 3 3 1 4 3 2 2 3 1 1 1 TH2 TH4 4 1 1 CN211 green 2 3...

Page 91: ...HS1 TH7 TH6 63LS LEV2a LEV1 LEV2b CNLVA CNLVB red CNLVD blue 1 2 3 4 6 1 2 3 4 5 6 1 2 3 4 6 CN990 green CNTYP2 black CN202 red CN212 red CNTYP5 green CN213 green CN211 green CN201 CNPS 1 2 3 1 2 3 4 1 2 3 1 2 3 1 2 3 1 1 1 2 3 4 CNAC 1 2 5 1 2 3 4 1 2 3 1 1 2 3 1 2 3 3 2 1 2 3 3 2 6 1 2 1 4 1 3 5 4 1 2 3 4 CN40 CN41 yellow CNPOW green CN62 yellow CN3K blue CN3N red CN3S CN3D black CNAC2 red CN102...

Page 92: ...1 2 3 1 2 3 3 2 1 2 3 3 2 6 1 2 1 4 1 3 5 4 1 2 3 4 red CNPS yellow CNPOW green CN62 CN41 yellow CN3K blue CN3N red CN3S CN3D black CNAC2 1 2 3 1 2 3 4 CN211 green 1 2 3 CN990 green CN201 Z25 1 2 3 1 2 CN202 red CN212 red CNTYP5 green CN213 green 1 1 2 3 4 1 3 2 TH2 TH4 1 3 2 TH5 TH3 63HS1 TH7 TH6 63LS LEV2a 1 2 3 4 6 1 2 3 4 5 6 LEV1 CNTYP2 black 3 CNLVA CNLVB red 1 LEV2b 1 2 3 4 6 CNLVD blue 1 2...

Page 93: ... 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 TB2 Expanded outdoor uni...

Page 94: ...gerant Bypass Control 95 5 2 6 Frequency Control 96 5 2 7 Defrost Operation Control 97 5 2 8 Refrigerant Recovery Control 99 5 2 9 Outdoor Unit Fan Control 100 5 2 10 Subcool Coil Control Linear Expansion Valve 1 100 5 2 11 Refrigerant Flow Control Linear Expansion Valves 2a and 2b 100 5 2 12 Control at Initial Startup 100 5 2 13 Emergency Operation Mode 103 5 2 14 Operation Mode 106 5 2 15 Demand...

Page 95: ... 86 HWE14080 GB ...

Page 96: ...ous Control Methods Using the Signal Input Output Connec tor on Outdoor Unit page 24 Switch Function Function according to switch setting Switch setting timing Units that require switch setting Note 2 OFF ON SWU 1 2 Unit address set ting Set to 00 or 51 100 with the dial switch Before power on C SW5 1 Centralized control switch Without connec tion to the central ized controller With connection to ...

Page 97: ...ICs Sends a test run signal to all IC Anytime after power on A No 832 0000001011 Cumulativecompressoroperation time deletion Retained Cleared Anytime after power on OFFĺON C No 896 0000000111 Clearance of error history OC Retained IC OC Deleted IC OC Anytime after power on OFFĺON C OS Retained OS Deleted OS No 897 1000000111 High sensible heat operation set ting Normal control High sensible heat o...

Page 98: ...unction according to connec tor Setting timing Enabled Disabled CN6 short circuit con nector Enabling disabling the following error detection functions ACCT sensor failure 5301 Detail No 115 ACCT sensor circuit failure 5301 Detail No 117 IPM open ACCT erroneous wiring 5301 Detail No 119 Detection of ACCT erroneous wiring 5301 Detail No 120 Error detec tion enabled Error detec tion disable No load ...

Page 99: ...will disable the error detection function and may result in equipment damage Switch Function Function according to switch setting Switch setting timing OFF ON SW1 1 Enabling Disabling no load operation No load operation will continue for ap proximately 30 seconds and then the unit will come to an abnormal stop Refer to the section on Inverter for details 8 9 8 Checking the Fan Inverter for Damage ...

Page 100: ...tting OFF ON Switch setting timing Notes SW1 SW3 1 2 3 4 5 6 7 8 9 10 9 10 1 2 3 4 5 6 7 8 Room temperature detection position Clogged filter detection Filter check reminder time setting Outside air intake Remote display option Humidifier control Self recovery after power failure Fan speed setting for Heating Thermo OFF Power source start stop Unit model selection Louver Vane Vane swing function V...

Page 101: ... 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 temperature display discharge temperature display Displayed Not displayed Operation by switch settings Switch setting timing ON OFF Main Sub Before power on Before power on Before power on Before...

Page 102: ...ample In case of address 108 Address setting range Setting method Main remote controller 101 150 Add 100 to the smallest address of all the indoor units in the same group Sub remote controller 151 200 Add 150 to the smallest address of all the indoor units in 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 s...

Page 103: ...OC 5 2 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 operation signal is suspended The control processing is resumed after the initial processing is completed Initial processing involves data processing in the microcomputer and initial setting of each of the LEV opening This pr...

Page 104: ...S ex ceeds 0 38 MPa 55 psi The following conditions are met during the heating mode Compressor frequency after power on is greater than 0 The low pressure 63LS drops One or more minutes after compressor startup if the cumulative compressor operation time is one hour or less three or more minutes if the cumulative compressor operation time is one hour or more When the low pressure 63LS drops below ...

Page 105: ... pressure is when the high pressure reading on 63HS1 is 3 58MPa 519psi 2 Discharge 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 ...

Page 106: ...ot in operation may or may not go into the defrost cycle depending on the cumulative operation time of their compressors 2 Defrost operation Condition 1 Condition 2 Condition 3 Outside temperature TH7 5ºC 23ºF or above 5ºC 23ºF or below Cumulative compressor operation time 50 minutes or more 90 minutes or more if the defrost prohibit timer is set to 90 250 minutes or more Evaporation tempera ture ...

Page 107: ...opped on all units at the same time 4 Problems during defrost operation If a problem is detected during defrost operation the operation will be stopped and the defrost prohibition time based on the integrated compressor operation time will be set to 20 minutes 5 Change in the number of operating indoor units during defrost operation Even when there is a change in the number of operating indoor uni...

Page 108: ... recovery TH4 115 C 239 F Frequencies below 50 Hz Refrigerant recovery 1 Refrigerant is recovered with the LEV on the applicable indoor unit unit under stopping mode fan mode cooling heating with thermo off being opened for 30 seconds 2 Periodic capacity control of the outdoor units and periodic LEV control of the indoor units will be suspended during refrigerant recovery operation they will be pe...

Page 109: ...g mode while the compressor is stopped and during cooling Thermo OFF In a multiple outdoor unit system the LEV closes 0 during heating operation while the compressor is stopped or during cooling Thermo OFF The LEV opens to a specified position when 15 minutes have passed after Thermo OFF 65 pulses During the defrost cycle normally the valve initially operates at 0 pulses although it may operate at...

Page 110: ...s rotated or F 50Hz OS Completed in the integrated operation time of 90 minutes The compressor on the OS starts up 2 3 2 The air conditioning load is too small for both the OC and the OS to simultaneously stay in operation 3 The air conditioning load is high enough for both OC and OS to simultaneously stay in operation Initial startup mode complete or the discharge superheat TH4 Tc is detected wit...

Page 111: ... in the integrated operation time of 35 minutes Completed in the integrated operation time of 90 minutes The compressor on the OS1 starts up 50 F 60Hz OS2 or F 50Hz OS2 Completed in the integrated operation time of 35 minutes Completed in the integrated operation time of 90 minutes The compressor on the OS2 starts up 2 3 4 5 Yes No No Yes Initial startup mode complete 50 F 60Hz both OS1 and OS2 Co...

Page 112: ...0 4225 4226 Bus voltage drop 4230 4235 Heatsink overheat protection 4240 4245 Overload protection 4250 4255 4256 Overcurrent relay trip 5110 Heatsink temperature sensor failure THHS 5301 Current sensor circuit failure 5305 5306 Position error Thermistor TH2 5102 Subcool heat exchanger bypass outlet temperature sensor failure TH3 5103 Pipe temperature sensor failure TH4 5104 Discharge temperature s...

Page 113: ... failure occurs or when some of the outdoor units are turned off 1 Starting the emergency operation When the OC is in trouble 1 When an error occurs the error source and the error code appear on the display on the remote controller 2 Reset the error via the remote controller to start an emergency operation Precautions before servicing the unit When the OC is in trouble the OS temporarily takes ove...

Page 114: ...OC OC failure pattern Trouble Trouble Trouble Normal Normal Normal Normal Normal Normal Cooling Heating Normal Normal Normal Trouble Trouble Trouble Trouble Trouble Trouble OS1 failure pattern OS2 failure pattern OC OS1 failure pattern OS1 OS2 Emergency operation Maximum total capacity of indoor units Note 1 Capacity that matches the total capacity of the operable outdoor units Note 1 If an attemp...

Page 115: ...m with two outdoor units Twelve step demand control is possible in the system with three outdoor units For details refer to the following page s 2 4 7 Various Control Methods Using the Signal Input Output Connector on Outdoor Unit page 24 5 2 16 Control of IH energization without the compressor in operation IH is used to heat the compressor motor on the stopped outdoor unit to make liquid refriger...

Page 116: ...mode Error stop Error display Self holding of protection function Error command to outdoor unit Indoor unit LEV fully closed Refer to 5 3 2 1 Cooling operation Refer to 5 3 2 2 Heating operation Refer to 5 3 2 3 for dry operation Prohibition Prohibition Prohibition Dry display Heating display Cooling display Dry mode Heating mode Fan mode Fan display Fan operations Operation mode Cooling mode Oper...

Page 117: ... to the operation mode commanded by the indoor unit However when the outdoor unit is running a cooling operation come of the operating indoor units will stop or the operation of these indoor units will be prohibited even when the indoor unit mode is switched from fan mode to heating mode This also applies when the outdoor unit is running a heating operation Start Breaker turned on Operation comman...

Page 118: ...run mode ON Thermostat ON 3 minute restart prevention Note 1 YES YES YES NO NO NO 4 way valve OFF 1 Inverter frequency control 2 Indoor unit LEV LEV1 control LEV2 fully opened 3 Solenoid valve control 4 Outdoor unit fan control 5 72C control Normal operation During test run mode Unit in the stopped state Indoor unit fan operation 1 Inverter output 0Hz 2 Indoor unit LEV LEV1 LEV2 rated opening 3 Al...

Page 119: ...nute restart prevention Note 1 2 Note 1 2 YES YES YES YES YES NO NO NO NO NO 1 Indoor outdoor unit fan control 2 Inverter frequency control 3 Indoor unit LEV LEV1 LEV2 control 4 Solenoid valve control 5 72C 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 Indoor unit LEV LEV1 Fully closed LEV2 rated...

Page 120: ... 6 72C OFF 1 or 2 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 when...

Page 121: ... 5 3 Operation Flowcharts 112 HWE14080 GB ...

Page 122: ... 121 6 5 Making Interlock Settings from an MA Remote Controller 123 6 5 1 MA Remote Controller PAR 21MAAU 123 6 6 Changing the Room Temperature Detection Position 125 6 7 Test Run Method 126 6 7 1 MA Remote Controller PAR 21MAAU 126 6 8 Operation Characteristics and Refrigerant Charge 127 6 9 Evaluating and Adjusting Refrigerant Charge 127 6 9 1 Refrigerant Overcharge and undercharge 127 6 9 2 Che...

Page 123: ... 114 HWE14080 GB ...

Page 124: ...of the accumulation of refrigerant in the compressor If insulation resistance reads at least 1 Mȍ by turning on the main power and keeping it on for at least 12 hours the refrigerant in the compressor 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 4 When the power is turned ...

Page 125: ...sy chain the indoor 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 indi...

Page 126: ...registered information B Interlock settings Registration of LOSSNAY units to be interlocked with the indoor units and search and deletion of registered information Normal display Register the indoor unit to be controlled with the remote controller Bring up either one of the following displays on the remote controller The blinking display of HO which appears when the power is turned on or the norma...

Page 127: ...the indoor unit address and interlocked unit address will be displayed together Bring up the address of the indoor unit and the address of the LOSSNAY to be interlocked on the display Select the address of the indoor unit to be registered by pressing button SET TEMP or to advance or go back through the addresses Select the address of the LOSSNAY unit to be interlocked by pressing button TIMER SET ...

Page 128: ...leting step a subsequent pressing of button TIMER will bring up the address of another registered unit The display method is the same as the one in step Address of an interlocked LOSSNAY unit Address of another interlocked unit Bring up on the display the address of the LOSSNAY unit that was interlocked with the indoor unit in step With each pressing of button TIMER the address of the LOSSNAY and ...

Page 129: ...ompletion of deletion will be displayed in the room temperature display window If a transmission error occurs the selected setting will not be deleted and the display will appear as shown below In this case repeat the steps above Displayed alternately Deletion error will be displayed in the room temperature display window If deletion is successfully completed will appear in the unit type display w...

Page 130: ... controller Normal Display Stopped unit 1 1 3 2 3 2 3 2 3 2 Normal display Operation mode display selection mode Room temperature display selection mode Narrowed preset temperature range mode cooling dry mode Narrowed preset temperature range mode heating mode CENTRALLY CONTROLLED DAILY AUTO OFF DRY FAN REMAINDER ERROR CODE CLOCK SET TEMP AUTO ON AUTO OFF FAN SPEED CHECK MODE FILTER SENSOR INSIDE ...

Page 131: ...ature is fixed at 87 F Only the lower limit temperature is changeable HEAT and LIMIT TEMP will light up and the temperature range for the heating mode will appear on the screen The upper limit temperature can be changed with button TIMER SET or Selection range for the upper limit temperature 63 F 83 F Medium temperature range indoor unit 63 F 83 F The lower limit temperature is fixed at 63 F Only ...

Page 132: ... address Press the TEST button to register the address of the selected indoor unit and the interlocked 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 comple...

Page 133: ...he interlock setting between a LOSSNAY unit and the interlocked indoor unit from the remote controller that is connected to the indoor unit Find the address of the LOSSNAY to be deleted See section 2 Search Procedures and bring up the result of the search for both the indoor unit and LOSSNAY on the display Press the ON OFF button twice to delete the address of the LOSSNAY unit that is interlocked ...

Page 134: ...oard on the indoor unit is set to OFF To use the built in sensor on the remote controller set the SW1 1 on the controller board on the indoor unit to ON Some models of remote controllers are not equipped with a built in temperature sensor Use the built in temperature sensor on the indoor unit instead When using the built in sensor on the remote controller install the remote controller where room t...

Page 135: ...blowing out 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 ...

Page 136: ... 9 1 Refrigerant Overcharge and undercharge 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 6 9 2 Checking the Refrigerant Charge during Operation Operat...

Page 137: ... 0 12 x L3 0 06 x L4 0 024 x L5 Į ȕ Amount of added refrigerant oz 3 12x L1 2 16 x L2 1 30 x L3 0 65 x L4 0 26 x L5 Į ȕ Amount of added refrigerant kg 0 26x L1 0 18 x L2 0 11 x L3 0 054 x L4 0 021 x L5 Į ȕ Amount of added refrigerant oz 2 80x L1 1 94 x L2 1 19 x L3 0 58 x L4 0 23 x L5 Į ȕ L1 Length of ø19 05 3 4 liquid pipe m L2 Length of ø15 88 5 8 liquid pipe m L3 Length of ø12 7 1 2 liquid pipe...

Page 138: ...ant charge the amount of factory charged refrigerant and the amount of refrigerant to be added on site Total index of the outdoor units P72 P96 P120 P144 P168 P192 P216 Maximum refrigerant charge 1 kg 32 7 41 7 49 5 50 0 58 7 66 0 74 6 Maximum refrigerant charge 1 lbs oz 72 1 91 15 109 2 110 4 129 7 145 8 164 7 Total index of the outdoor units P240 P264 P288 P312 P336 P360 Maximum refrigerant char...

Page 139: ...odel Liquid separator Liquid separator All the pipes in the figure are liquid pipes 15 88 30 m 10 m 40 m 9 52 3 m 1m 10 m 10 m 20 m 10 m 10 m 64 m 6 35 10 m According to the above formula The calculation result would be 17 08 and it is rounded up to the nearest 0 1 The final result will be as follows Amount of refrigerant to be charged kg 0 2 X 40 0 06 X 64 0 024 X 10 5 0 17 08kg Amount of refrige...

Page 140: ...hile 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 inadequate later on TH...

Page 141: ...1 Gradually add refrigerant from the service port on the low 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 922 on the OC Turn on SW4 922 on the OC Adjustment complete Note 4 Has the initial start up mode been complete...

Page 142: ...n operates at extra low speed for 5 minutes after it is turned on or until the pipe temperature reaches 35 C 95 F then 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 ...

Page 143: ...uency Hz 52 65 LEV open ing Indoor unit Pulse 325 325 387 387 SC LEV1 80 100 LEV2 2100 2100 Pressure High pressure after O S Low pressure before accumulator MPa psi 2 59 0 96 376 139 2 83 0 84 410 122 Section tempera tures Outdoor unit Discharge TH4 C F 69 156 74 165 Heat exchanger outlet TH3 44 111 46 115 Accumulator inlet 10 50 10 50 Accumulator outlet 10 50 10 50 SCC outlet TH6 24 75 26 79 Comp...

Page 144: ...door unit Pulse 325 325 325 325 325 325 325 SC LEV1 100 190 LEV2 2100 2100 Pressure High pressure after O S Low pressure before accumulator MPa psi 2 92 0 90 424 131 3 05 0 84 442 122 Section tempera tures Outdoor unit Discharge TH4 C F 73 163 82 180 Heat exchanger outlet TH3 40 104 45 113 Accumulator inlet 10 50 7 45 Accumulator outlet 10 50 7 45 SCC outlet TH6 20 68 25 77 Compressor inlet 15 59 ...

Page 145: ...ndoor unit Pulse 325 325 387 387 SC LEV1 190 LEV2 2100 Pressure High pressure after O S Low pressure before accumulator MPa psi 3 10 0 84 450 122 Section tempera tures Outdoor unit Discharge TH4 C F 85 185 Heat exchanger outlet TH3 47 117 Accumulator inlet 7 45 Accumulator outlet 7 45 SCC outlet TH6 27 81 Compressor inlet 19 66 Compressor shell bottom 38 100 Indoor unit LEV inlet 17 63 Heat exchan...

Page 146: ...accumulator MPa psi 2 71 0 90 393 131 2 71 0 90 393 131 Section tempera tures Outdoor unit Discharge TH4 C F 69 156 69 156 Heat exchanger outlet TH3 44 111 44 111 Accumulator inlet 10 50 10 50 Accumulator outlet 10 50 10 50 SCC outlet TH6 24 75 24 75 Compressor inlet 17 63 17 63 Compressor shell bottom 47 117 47 117 Indoor unit LEV inlet 24 75 24 75 Heat exchanger outlet 10 50 10 50 Heating operat...

Page 147: ...1 0 90 393 131 2 71 0 90 393 131 Section tempera tures Outdoor unit Discharge TH4 C F 69 156 74 165 Heat exchanger outlet TH3 44 111 46 115 Accumulator inlet 10 50 10 50 Accumulator outlet 10 50 10 50 SCC outlet TH6 24 75 26 79 Compressor inlet 17 63 14 57 Compressor shell bottom 47 117 38 100 Indoor unit LEV inlet 24 75 24 75 Heat exchanger outlet 10 50 10 50 Heating operation Outdoor unit Electr...

Page 148: ...si 2 76 0 93 400 135 2 76 0 93 400 135 Section tempera tures Outdoor unit Discharge TH4 C F 69 156 73 163 Heat exchanger outlet TH3 44 111 40 104 Accumulator inlet 10 50 10 50 Accumulator outlet 10 50 10 50 SCC outlet TH6 24 75 20 68 Compressor inlet 17 63 15 59 Compressor shell bottom 47 117 42 108 Indoor unit LEV inlet 21 70 21 70 Heat exchanger outlet 10 50 10 50 Heating operation Outdoor unit ...

Page 149: ...2 88 0 87 417 127 2 88 0 87 417 127 Section tempera tures Outdoor unit Discharge TH4 C F 74 165 73 163 Heat exchanger outlet TH3 46 115 40 104 Accumulator inlet 10 50 10 50 Accumulator outlet 10 50 10 50 SCC outlet TH6 26 79 20 68 Compressor inlet 14 57 15 59 Compressor shell bottom 38 100 42 108 Indoor unit LEV inlet 22 72 22 72 Heat exchanger outlet 10 50 10 50 Heating operation Outdoor unit Ele...

Page 150: ...a psi 2 92 0 90 424 131 2 92 0 90 424 131 Section tempera tures Outdoor unit Discharge TH4 C F 73 163 73 163 Heat exchanger outlet TH3 40 104 40 104 Accumulator inlet 10 50 10 50 Accumulator outlet 10 50 10 50 SCC outlet TH6 20 68 20 68 Compressor inlet 15 59 15 59 Compressor shell bottom 42 108 42 108 Indoor unit LEV inlet 19 66 19 66 Heat exchanger outlet 10 50 10 50 Heating operation Outdoor un...

Page 151: ...h pressure after O S Low pressure before accumulator MPa psi 2 71 0 90 2 71 0 90 2 92 0 90 393 131 393 131 424 131 Section tempera tures Outdoor unit Discharge TH4 C F 69 156 69 156 73 163 Heat exchanger outlet TH3 44 111 44 111 40 104 Accumulator inlet 10 50 10 50 10 50 Accumulator outlet 10 50 10 50 10 50 SCC outlet TH6 24 75 24 75 20 68 Compressor inlet 17 63 17 63 15 59 Compressor shell bottom...

Page 152: ...ter O S Low pressure before accumulator MPa psi 2 71 0 90 2 83 0 84 2 92 0 90 393 131 410 122 424 131 Section tempera tures Outdoor unit Discharge TH4 C F 69 156 74 165 73 163 Heat exchanger outlet TH3 44 111 46 115 40 104 Accumulator inlet 10 50 10 50 10 50 Accumulator outlet 10 50 10 50 10 50 SCC outlet TH6 24 75 26 79 20 68 Compressor inlet 17 63 14 57 15 59 Compressor shell bottom 47 117 38 10...

Page 153: ...Low pressure before accumulator MPa psi 2 81 0 92 2 81 0 92 2 81 0 92 408 134 408 134 408 134 Section tempera tures Outdoor unit Discharge TH4 C F 69 156 73 163 73 163 Heat exchanger outlet TH3 44 111 40 104 40 104 Accumulator inlet 10 50 10 50 10 50 Accumulator outlet 10 50 10 50 10 50 SCC outlet TH6 24 75 20 68 20 68 Compressor inlet 17 63 15 59 15 59 Compressor shell bottom 47 117 42 108 42 108...

Page 154: ...r O S Low pressure before accumulator MPa psi 2 89 0 88 2 89 0 88 2 89 0 88 419 128 419 128 419 128 Section tempera tures Outdoor unit Discharge TH4 C F 74 165 73 163 73 163 Heat exchanger outlet TH3 46 115 40 104 40 104 Accumulator inlet 10 50 10 50 10 50 Accumulator outlet 10 50 10 50 10 50 SCC outlet TH6 26 79 20 68 20 68 Compressor inlet 14 57 15 59 15 59 Compressor shell bottom 38 100 42 108 ...

Page 155: ... S Low pressure before accumulator MPa psi 2 93 0 86 2 93 0 86 2 93 0 86 425 125 425 125 425 125 Section tempera tures Outdoor unit Discharge TH4 C F 74 165 73 163 82 180 Heat exchanger outlet TH3 46 115 40 104 45 113 Accumulator inlet 10 50 10 50 7 45 Accumulator outlet 10 50 10 50 7 45 SCC outlet TH6 26 79 20 68 25 77 Compressor inlet 14 57 15 59 19 66 Compressor shell bottom 38 100 42 108 38 10...

Page 156: ...4102 YLMU 169 7 5 3 Error Code 4106 170 7 5 4 Error Code 4109 170 7 5 5 Error Code 4115 TLMU 171 7 5 6 Error Code 4115 YLMU 171 7 5 7 Error Code 4116 172 7 5 8 Error Code 4121 172 7 5 9 Error Code 4124 173 7 5 10 Error Codes 4220 4225 4226 Detail Code 108 TLMU 174 7 5 11 Error Codes 4220 4225 4226 Detail Code 108 YLMU 176 7 5 12 Error Codes 4220 4225 4226 Detail Code 109 TLMU 178 7 5 13 Error Code...

Page 157: ... 134 204 7 6 18 Error Code 5401 204 7 6 19 Error Code 5701 205 7 7 Error Code Definitions and Solutions Codes 6000 6999 206 7 7 1 Error Code 6201 206 7 7 2 Error Code 6202 206 7 7 3 Error Code 6600 207 7 7 4 Error Code 6601 207 7 7 5 Error Code 6602 208 7 7 6 Error Code 6603 209 7 7 7 Error Code 6606 209 7 7 8 Error Code 6607 Error Source Address Outdoor Unit OC 210 7 7 9 Error Code 6607 Error Sou...

Page 158: ...ror Code 7101 227 7 8 3 Error Code 7102 228 7 8 4 Error Code 7105 229 7 8 5 Error Code 7106 229 7 8 6 Error Code 7110 230 7 8 7 Error Code 7111 230 7 8 8 Error Code 7113 231 7 8 9 Error Code 7117 232 7 8 10 Error Code 7130 233 ...

Page 159: ... 150 HWE14080 GB ...

Page 160: ...0 Drain sensor submergence O page 162 2502 Drain pump fault O page 164 2503 Drain sensor Thd fault O O page 166 2600 Water leakage O page 167 2601 Water supply cutoff O page 167 4102 4152 Open phase O page 168 4106 Transmission power supply fault O page 170 4109 Fan operation status detection error O page 170 4115 Power supply signal sync error O page 171 4116 RPM error Motor error O O page 172 41...

Page 161: ...TH2 O page 192 5103 1205 00 Temperature sensor fault Indoor unit gas side pipe temperature TH23 O page 191 OA processing unit gas side pipe temperature TH3 O page 191 Pipe temperature at heatex changer outlet TH3 O page 192 5104 1202 Temperature sensor fault OA processing unit intake air temperature TH1 O page 191 Outside temperature TH24 O page 191 Detectable only by the All Fresh type in door un...

Page 162: ...usy error O O O O page 209 6606 Communication error between device and transmission processors O O O O page 209 6607 No ACK error O O O O page 210 6608 No response error O O O O page 217 6831 MA controller signal reception error No signal reception O O page 218 6832 MA remote controller signal transmission error Synchro nization error O O page 219 6833 MA remote controller signal transmission erro...

Page 163: ...ystem 7106 Attribute setting error O page 229 7110 Connection information signal transmission reception er ror O page 230 7111 Remote controller sensor fault O O page 230 7113 Function setting error improper connection of CNTYP O page 231 7117 Model setting error O page 232 7130 Incompatible unit combination O page 233 Error Code Prelimi nary error code Error prelim inary detail code Error code de...

Page 164: ...Imax Arms Currenteffective value error Arms Current peak value error Apeak Temperature protection TOL C INV24 PUHY P72TLMU 26 31 53 95 PUHY P96TLMU 26 31 53 95 PUHY P120TLMU 42 50 82 95 PUHY P144TLMU 42 50 82 95 INV25 PUHY P168TLMU 53 64 106 80 INV20Y PUHY P72YLMU 14 17 28 100 PUHY P96YLMU 14 17 28 100 PUHY P120YLMU 22 26 44 100 PUHY P144YLMU 22 26 44 100 PUHY P168YLMU 27 33 56 100 ...

Page 165: ...oblems YLMU page 276 Control board FAN board CN2 CN2A CN80 CN4 CN4A CN80 FAN board INV board CN82 CN2 CN83 CN43 Cause Check method and remedy 1 Incorrect switch setting on the indoor unit cir cuit board Check SW3 3 on the indoor unit circuit board Set SW3 3 to ON only when connecting an auto filter cleaning unit 2 Power wire that connects the circuit board on the indoor unit and the circuit board ...

Page 166: ...inition A control communication reception error 2 Error definition and error detection method Indoor controller board Abnormal if data cannot be read normally from the nonvolatile memory of the indoor controller board 3 Cause check method and remedy Cause Check method and remedy Defective indoor controller board Replace indoor controller board ...

Page 167: ...For 30 minutes after the stop the first stop or the second stop of the outdoor unit preliminary errors will be displayed on the LED display 3 Cause check method and remedy Cause Check method and remedy 1 Gas leak gas shortage Refer to the following page s 6 9 Evaluating and Adjusting Refrigerant Charge page 127 2 Overload operation Check operating conditions and operation status of indoor outdoor ...

Page 168: ... 098MPa 14psi immediately before start up the operation immediately stops 3 Cause check method and remedy Cause Check method and remedy 1 Inner pressure drop due to a leakage Refer to the following page s 8 5 3 Comparing the Low Pressure Sensor Measurement and Gauge Pressure page 254 2 Low pressure sensor failure 3 Short circuited pressure sensor cable due to torn outer rubber 4 A pin on the male ...

Page 169: ...or heating operation to check the opera tion Cooling Indoor unit LEV2 Heating Indoor unit LEV Refer to the following page s 8 8 Troubleshooting LEV Problems page 258 2 Closed refrigerant service valve Confirm that the refrigerant service valve is fully open 3 Short cycle on the indoor unit side Check the indoor units for problems and correct them if any 4 Clogged filter on the indoor unit 5 Reduce...

Page 170: ...rs on the display 4 If a TdSH of 10 C 18 F or below is detected after 30 minutes have elapsed after a stoppage of the outdoor unit the unit will follow the same sequence as the first detection of the condition as described in section 1 above 5 The period of 30 minutes after a stoppage of the outdoor unit is regarded as a preliminary error and a preliminary error code appears on the LED display 3 C...

Page 171: ...s also performed while the 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 The liquid pipe temperature minus the inlet temperature is 10 C 18 F or less 3 Cause check method and remedy Cause Chec...

Page 172: ...ing 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 The liquid pipe temperature minus the inlet temperature is 10 C 18 F or less 3 Cause check method and remedy Reference Cause Check method and remedy 1 Drain water drainage problem Clogged drain pump Clogged drain pipin...

Page 173: ... circuit that are in any mode other than 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...

Page 174: ...ected the conditions that are listed in item 4 above brings 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 ...

Page 175: ...st cycle When the liquid temperature 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 Cause Check method and remedy 1 Faulty connector CN31 insertion 1 Check for connector connection failure Reinsert the connector re...

Page 176: ... code definition Water supply cutoff 2 Cause check method and remedy 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 floa...

Page 177: ...ltage to the power supply terminal block TB1 2 Noise filter problem Coil problem Circuit board failure Check the coil connections Check for coil burnout Confirm that the voltage at the CN001 connector is 188 V or above Check that the voltage at noise filter board connectors TB21 to TB23 is 188V 3 Wiring failure Check Noise filter CN110 relay connector CNFG2 and control board CN110 connector for da...

Page 178: ...k TB1 2 Noise filter problem Coil problem Circuit 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 ...

Page 179: ...power reception failure 3 Cause One of the outdoor units stopped supplying power but no other outdoor units start supplying power 4 Check method and remedy Check the transmission power supply circuit on all outdoor units in a given refrigerant circuit for problems 8 11 2 Troubleshooting Problems with Outdoor Unit Transmission Power Supply Circuit page 288 8 12 2 Troubleshooting Problems with Outdo...

Page 180: ...fuse Check fuse F01 on the control board Check noise filter fuses F001 and F002 4 Wiring failure Between noise filter board CN012 and con trol board CNAC Confirm that the voltage at the control board connector CNAC is 188 V or above 5 Control board failure If none of the items described above is applicable and if the trou ble reappears even after the power is switched on again replace the control ...

Page 181: ...Cause check method and remedy 7 5 8 Error Code 4121 1 Error code definition Function setting error 2 Error source cause check method and remedy 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 Error source Cause Check method and remedy Outdoor unit 1 Dip switch setting error on the control ...

Page 182: ... CONTROL button There is not 0V DC between CN1X1 and ĺReplace the damper limit switch open There is not 5V DC between CN1X1 and ĺReplace the damper limit switch close 4 If damper opens or closes and voltages in 3 are normal measure the voltage between CN1X1 and and the voltage between CN1Y1 and during the damper close by pressing VANE CONTROL button There is not 5V DC between CN1X1 and ĺReplace th...

Page 183: ... N terminals on the INV board while the inverter is stopped ĺ Check the following items if it 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 CN72C on the control board ĺGo to 3 3 Check the coil connections L1 L3 and coil burnout 4 Check the resistance of the diode stack Refer to the following page ...

Page 184: ...board If there are no problems change the noise filter board Replace the noise filter board if no problems are found If the problem recurs after replacing the noise filter replace the Fan board ĺ Check the following items if the voltage is below 253V 4 Check the CNVDC connector connection 3 Control board failure Confirm that a voltage of 12 VDC is applied to the connector CN72C on the control boar...

Page 185: ...stance on the INV board Refer to the following page s 8 10 14 Troubleshooting Prob lems with IGBT Module page 283 Check the voltage between the FT P and FT N terminals on the INV board while the inverter is stopped and if it is less than 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 bo...

Page 186: ...board and the Fan board 4 Check contents 4220 Replace the Fan board if no problems are found Check the voltage at CNVDC on the Fan board while the inverter is stopped and if it is less than 420 V check the following items 1 Check between noise filter board inverter board connector board and fan board 2 Check contents 4220 Replace the Fan board if no problems are found 3 Control board failure Check...

Page 187: ...ition 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 failure If the problem recurs replace the INV board or fan board In the case of 4220 INV board In the case of 4...

Page 188: ...elated error codes refer to the following page s 8 9 Troubleshooting Inverter Problems TLMU page 264 Cause Check method and remedy 1 External noise 2 INV board failure Refer to the following page s 8 9 2 Checking the Inverter Board Error Detection Circuit page 266 3 IPM failure P168 model only Replace the IPM 4 DCCT failure P168 model only Replace the DCCT Cause Check method and remedy 1 External ...

Page 189: ...25 and 4226 For inverter related error codes refer to the following page s 8 10 Troubleshooting Inverter Problems YLMU page 276 Cause Check method and remedy 1 External noise 2 INV board failure Refer to the following page s 8 10 2 Checking the Inverter Board Error De tection Circuit page 278 Cause Check method and remedy 1 External noise 2 Fan board failure Refer to the following page s 8 10 7 Ch...

Page 190: ...r inverter related error codes refer to the following page s 8 9 Troubleshooting Inverter Problems TLMU page 264 Model TOH INV24 100 C 212 F INV25 90 C 194 F Cause Check method and remedy 1 Fan board failure Refer to the following page s 8 9 7 Checking the Fan Board Error Detection Circuit at No Load page 268 8 9 8 Checking the Fan Inverter for Damage at No Load page 269 8 9 9 Checking the Fan Inv...

Page 191: ...an Board Error Detection Circuit at No Load page 279 8 10 8 Checking the Fan Inverter for Damage at No Load page 280 8 10 9 Checking the Fan Inverter for Damage with Load page 281 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 the following page s 8 10 6 Checking the Fan Motor for Ground Fault and Coil Res...

Page 192: ... codes refer to the following page s 8 9 Troubleshooting Inverter Problems TLMU page 264 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 the following page s 8 9 Troubleshooting Inverter Problems TLMU page 264 4 Current sensor ACCT failure R...

Page 193: ...method and remedy For inverter related error codes refer to the following page s 8 10 Troubleshooting Inverter Problems YLMU page 276 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 the following page s 8 10 Troubleshooting Inverter Problems...

Page 194: ...Fault and Coil Resistance Problems page 266 8 9 4 Checking the Inverter for Damage at No Load page 267 8 9 5 Checking the Inverter for Damage during Compressor Opera tion page 268 8 9 10 Checking the Installation Conditions page 270 Cause Check method and remedy 1 Inverter output related Refer to the following page s 8 9 2 Checking the Inverter Board Error Detection Circuit page 266 8 9 3 Checking...

Page 195: ...he Inverter Board Error Detection Circuit page 278 8 10 3 Checking the Compressor for Ground Fault and Coil Resistance Prob lems page 278 8 10 4 Checking the Inverter for Damage at No Load page 278 8 10 5 Checking the Inverter for Damage during Compressor Operation page 279 8 10 10 Checking the Installation Conditions page 281 Check the IGBT module resistance value of the INV board if no problems ...

Page 196: ...rter Protection Level Ta ble page 155 3 Cause check method and remedy For inverter related error codes refer to the following page s 8 9 Troubleshooting Inverter Problems TLMU page 264 Cause Check method and remedy 1 Inverter output related Refer to the following page s 8 9 2 Checking the Inverter Board Error Detection Circuit page 266 8 9 3 Checking the Compressor for Ground Fault and Coil Resist...

Page 197: ...e 266 8 9 4 Checking the Inverter for Damage at No Load page 267 8 9 5 Checking the Inverter for Damage during Compressor Operation page 268 8 9 10 Checking the Installation Conditions page 270 YLMU 8 10 2 Checking the Inverter Board Error Detection Circuit page 278 8 10 3 Checking the Compressor for Ground Fault and Coil Resistance Problems page 278 8 10 4 Checking the Inverter for Damage at No L...

Page 198: ...r related error codes refer to the following page s 8 10 Troubleshooting Inverter Problems YLMU page 276 Cause Check method and remedy 1 Short circuited compressor Refer to the following page s TLMU 8 9 3 Checking the Compressor for Ground Fault and Coil Resistance Problems page 266 YLMU 8 10 3 Checking the Compressor for Ground Fault and Coil Resistance Problems page 278 2 Output wiring Check for...

Page 199: ... to the relevant pages for the details of model names and the specified values 7 1 1 Inverter Protection Level Ta ble page 155 3 Cause check method and remedy Same as 4230 error 7 5 29 Error Code 4260 YLMU 1 Error code definition Heatsink overheat protection at startup 2 Error definition and error detection method The heatsink temperature THHS remains at or above 105 C 221 F for 10 minutes or more...

Page 200: ...etection method If a short or an open is detected during thermostat ON the outdoor unit turns to anti restart mode 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 c...

Page 201: ... the outdoor unit makes an error stop When a short or an open of the thermistor is 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 th...

Page 202: ...perature sensor THHS fault Detail code 01 2 Error definition and error detection method When a short or an open of THHS is detected just before or during the inverter operation 3 Cause check method and remedy For inverter related error codes refer to the following page s 8 10 Troubleshooting Inverter Problems YLMU page 276 Cause Check method and remedy 1 INV board failure If the problem recurs whe...

Page 203: ... the restart the outdoor 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 Cause Check method and remedy 1 High pressure sensor failure Refer...

Page 204: ...nce Prob lems page 266 3 INV board failure Refer to the following page s 8 9 2 Checking the Inverter Board Error Detection Circuit page 266 8 9 4 Checking the Inverter for Damage at No Load page 267 8 9 5 Checking the Inverter for Damage during Compressor Operation page 268 Cause Check method and remedy 1 Inverter open output phase Check the output wiring connections 2 Compressor failure Refer to ...

Page 205: ... error codes refer to the following page s 8 10 Troubleshooting Inverter Problems YLMU page 276 Cause Check method and remedy 1 Inverter open output phase Check the output wiring connections 2 Compressor failure Refer to the following page s 8 10 3 Checking the Compressor for Ground Fault and Coil Resistance Prob lems page 278 3 INV board failure Refer to the following page s 8 10 2 Checking the I...

Page 206: ...4 8 10 Troubleshooting Inverter Problems YLMU page 276 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 sensor 4 INV board failure Replace the INV board Cause Check method and remedy 1 INV board failure R...

Page 207: ...page 264 Cause Check method and remedy 1 Contact failure Check for good contact of the INV board connector CNCT and the connector on the DCCT side 2 INV board failure Refer to the following page s 8 9 2 Checking the Inverter Board Error Detection Circuit page 266 8 9 4 Checking the Inverter for Damage at No Load page 267 8 9 5 Checking the Inverter for Damage during Compressor Operation page 268 3...

Page 208: ...nd CT12 on the INV board respectively 2 Inverter failure Refer to the following page s 8 9 4 Checking the Inverter for Damage at No Load page 267 8 9 5 Checking the Inverter for Damage during Compressor Opera tion page 268 3 Compressor failure Refer to the following page s 8 9 3 Checking the Compressor for Ground Fault and Coil Resis tance Problems page 266 Cause Check method and remedy 1 ACCT sen...

Page 209: ...rror codes refer to the following page s 8 10 Troubleshooting Inverter Problems YLMU page 276 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 the following page s 8 10 4 Checking the Inverter for Damage at No Load page 2...

Page 210: ...and CT12 on the INV board respectively 2 Inverter failure Refer to the following page s 8 9 4 Checking the Inverter for Damage at No Load page 267 8 9 5 Checking the Inverter for Damage during Compressor Opera tion page 268 3 Compressor failure Refer to the following page s 8 9 3 Checking the Compressor for Ground Fault and Coil Resistance Problems page 266 4 INV board failure Replace the INV boar...

Page 211: ...U page 276 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 the following page s 8 10 4 Checking the Inverter for Damage at No Load page 278 8 10 5 Checking the Inverter for Damage during Compressor Operation page 279 3 C...

Page 212: ...emedy 1 Outdoor factors Check that there is no wind gust or strong wind 2 Contact failure and faulty fan motor wiring Check the fan board connector CNINV and CNSNR for proper contacts Check the wirign betweem the fan motor and fan board 3 Fan board failure Refer to the following page s TLMU 8 9 8 Checking the Fan Inverter for Damage at No Load page 269 8 9 9 Checking the Fan Inverter for Damage wi...

Page 213: ... Damage at No Load page 269 8 9 9 Checking the Fan Inverter for Damage with Load page 270 YLMU 8 10 8 Checking the Fan Inverter for Damage at No Load page 280 8 10 9 Checking the Fan Inverter for Damage with Load page 281 3 Fan motor error Refer to the following page s TLMU 8 9 6 Checking the Fan Motor for Ground Fault and Coil Resistance Problems page 268 YLMU 8 10 6 Checking the Fan Motor for Gr...

Page 214: ...1 1 Error code definition Loose float switch connector 2 Error definition and error detection method Detection of the disconnected float switch open phase condition during operation 3 Cause check method and remedy 1 CN4F disconnection or contact failure Check for disconnection of the connector CN4F on the indoor unit control board ...

Page 215: ... 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 7 7 2 Error Code 6202 1 Error code definition Remote controller board fault clock IC error 2 Error definition and error detection method This error is detected when the built in clock on the remote controller is not pro...

Page 216: ...he 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 outdoor units indoor units and LOSSNAY units keep them all turned off for at least five minutes and turn them back on When air conditioning units are operating normally despite the address overlap error C...

Page 217: ... control in case of grouped indoor units connected to different outdoor units or in case of the system connected with MELANS 4 Check method and remedy 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 188 253...

Page 218: ...ocomputer for transmission The address attribute appeared on the display on the remote controller indicates the controller where an error oc curred 3 Cause check method and remedy 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 Check the transmission wave shape and noise on t...

Page 219: ...on the remote controller indicates the controller which did not provide the response ACK 3 Cause check method and remedy Cause Check method and remedy 1 Incidental cause 1 Turn off the power source of the outdoor unit and turn it on again 2 Contact failure of transmission line of OC or IC 2 If the error is accidental it will run normally If not check the causes 2 5 3 Decrease of transmission line ...

Page 220: ... Troubleshooting prob lems for indoor units B Troubleshooting problems for all units A Troubleshooting prob lems for all units B Cause Check method and remedy 1 Incidental cause 1 Turn off the outdoor indoor units for 5 or more minutes and turn them on again 2 When IC unit address is changed or modified during operation 2 If the error is accidental it will run normally If not check the causes 2 6 ...

Page 221: ... and remedy 1 Troubleshooting problems for LOSSNAY units Error display ME remote controller RC MA remote controller MA Types of refrigerant systems Single refrigerant system Grouped operation of multiple refrigerant systems Troubleshooting problems for LOSSNAY units Troubleshooting problems for LOSSNAY units Troubleshooting problems for all units A Cause Check method and remedy 1 Incidental cause ...

Page 222: ...ngle refrigerant system Grouped operation of mul tiple refrigerant systems Types of indoor units experiencing problems Part of the indoor units IC are experiencing problems All indoor units IC in the same system are experi encing problems All indoor units IC are experiencing problems Troubleshooting problems for ME remote controllers Troubleshooting prob lems for ME remote con trollers Troubleshoo...

Page 223: ...for system controllers Error display ME remote controller RC MA remote controller MA Type of unit controller in error Part of the ME remote con trollers RC are experi encing problems All indoor units IC in the same system are experi encing problems All ME remote controllers RC are experiencing problems Troubleshooting problems for system controllers Troubleshooting prob lems for all units B Troubl...

Page 224: ...e Cause col umn When no errors are present Indoor unit circuit board failure 4 The male power supply connectors on 2 or more outdoor units are connected to the female power supply switch connector CN40 for centralized control If an error occurs after the unit runs normally once the following causes may be considered Total capacity error 7100 Capacity code error 7101 Error in the number of connecte...

Page 225: ...door units have Use either of the following two methods for dele tion 2 Although the address of LOSSNAY has been changed af ter the interlock registration of LOSSNAY is made using ME remote controller the indoor unit is keeping the mem ory of the previous address 1 Address deletion by ME remote controller Delete unnecessary address information using the manual setting function of ME remote control...

Page 226: ...se of transmission line voltage 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 ...

Page 227: ... 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 set to ...

Page 228: ... 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 set to MAIN 5 Diagnose the remote controller describe...

Page 229: ...nected 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 controller...

Page 230: ... receives the 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...

Page 231: ...medy 1 Contact failure short circuit or miswiring converse wiring of in door outdoor unit connecting wire Check disconnecting or looseness of indoor outdoor unit connecting wire of indoor unit or outdoor unit Check all the units in case of twin triple quadruple indoor unit system 2 Defective transmitting receiving circuit of outdoor controller cir cuit board Turn the power off and on again to chec...

Page 232: ...utdoor unit communication error Transmitting error Abnormal if 1 receiving is detected 30 times continuously though indoor controller board has transmitted 0 3 Cause check method and remedy Cause Check method and remedy 1 Defective transmitting receiving circuit of indoor controller board Turn the power off and on again to check If abnormality generates again replace indoor controller board 2 Nois...

Page 233: ... wire Check disconnecting or looseness of indoor outdoor unit connecting wire of all indoor units or outdoor units 2 Defective transmitting receiving circuit of outdoor controller cir cuit board Turn the power off and on again to check If abnormality generates again replace indoor controller board or outdoor controller circuit board Note ther indoor controller board may have defect 3 Defective tra...

Page 234: ...d outdoor units 2 Diameter or length of indoor outdoor unit connecting wire is out of specified capacity Check diameter and length of indoor outdoor unit connecting wire Total wiring length 80 m including wiring connecting each indoor unit and between indoor and outdoor unit Also check if the connection order of flat ca ble is S1 S2 S3 3 2 or more outdoor units have refrigerant address 0 In case o...

Page 235: ...When the 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 3 5 6 on the outdoor unit are set incorrectly Check the setting for the model selection switch on the outdoor unit Dipswitches SW5 3 5 6 on the outdoor unit contro...

Page 236: ...which has the error source 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 ...

Page 237: ... following display will appear 3 Check whether the transmission line for the terminal block for cen tralized control TB7 is not con nected to the terminal block for the indoor outdoor transmission line TB3 ME 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 ...

Page 238: ...f OC unit address The address of outdoor unit is not being set to 51 100 Check that the address of OC unit is set to 51 100 Reset the address if it stays out of the range while shutting the power source off Error source Cause Check method and remedy A remote controller for use with indoor units such as the MA remote controller is connected to the OA processing unit whose attribute is FU To operate...

Page 239: ...he power to the transmission booster is not cut off by 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 ĺReset 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 Bro...

Page 240: ...rd for proper connection 2 Check the connector CNTYP5 on the control board for proper connection 3 Check the settings of SW5 3 through SW5 6 on the control board Detail code 16 1 Check the connector CNTYP on the INV board for proper con nection 2 Check the connector CNTYP5 on the control board for proper connection 3 Check the settings of SW5 3 through SW5 6 on the control board 4 Check the wiring...

Page 241: ... 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 wiring between the control board and INV board Refer to the following page s 7 2 1 Error Code 0403 page 156 Detail code 0 1 5 6 1 Check the wiring between the control board and INV board Refer to the following page s 7 2 1 Error Code 0403 page 1...

Page 242: ...3 Error source cause check method and remedy Error source Cause Check method and remedy Outdoor unit The connected indoor unit is for use with R22 or R407C Incorrect type of indoor units are connected 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 Incompatible units are connected Check the conne...

Page 243: ... 7 8 Error Code Definitions and Solutions Codes 7000 7999 234 HWE14080 GB ...

Page 244: ... Sensor Configuration 63LS 254 8 6 Troubleshooting Solenoid Valve Problems 255 8 7 Troubleshooting Outdoor Unit Fan Problems 257 8 8 Troubleshooting LEV Problems 258 8 8 1 General Overview on LEV Operation 258 8 8 2 Possible Problems and Solutions 261 8 8 3 Coil Removal Instructions 262 8 9 Troubleshooting Inverter Problems TLMU 264 8 9 1 Inverter Related Problems and Solutions 264 8 9 2 Checking ...

Page 245: ...nditions 281 8 10 11 Solutions for the Main No Fuse Breaker Trip 282 8 10 12 Solutions for the Main Earth Leakage Breaker Trip 282 8 10 13 Simple Check on Inverter Circuit Components 283 8 10 14 Troubleshooting Problems with IGBT Module 283 8 11 Control Circuit TLMU 285 8 11 1 Control Power Supply Function Block 285 8 11 2 Troubleshooting Problems with Outdoor Unit Transmission Power Supply Circui...

Page 246: ...e Reversed connection 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 uni...

Page 247: ...zed controller TB7 The male power supply connectors on the multiple outdoor units are connected to the female power supply switch connector 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 s...

Page 248: ...en the terminal block for M NET line TB5 of the indoor unit and the indoor unit board CN2M or disconnected connector 6 Incorrect wiring for 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 control...

Page 249: ... check of the indoor control board still displayed Is the operation by MELANS forbidden or the input from external control equipment allowed SWC ON Is the compulsory thermo OFF SWA switch set to 2 or 3 Although No 1 refrigerant circuit is normal No 2 or No 3 refrigerant circuit remain stopped Running group operation with the MA remote controller Does the indoor unit make an instantaneous stop Powe...

Page 250: ...on 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 For details refer to the following page s 8 16 Troubleshooting Problems Using the LED Status Indica tors on the Outdoor Unit page 298 3 Check method and remedy 1 Check voltage of the transmiss...

Page 251: ...1 Check LED1 on the 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 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 ...

Page 252: ...B7 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 ME remote contro...

Page 253: ...nits 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 ...

Page 254: ...ead the SW settings refer to the follow ing page s 9 1 1 How to Read the LED page 301 2 Check temperature difference between the evaporat ing temperature Te and the target evaporating tem perature Tem with self diagnosis LED Note Higher Te than Tem causes insufficient capacity SW4 setting SW6 10 OFF For how to read the SW settings refer to the follow ing page s 9 1 1 How to Read the LED page 301 N...

Page 255: ...ollowing page s 6 9 Evaluating and Adjusting Refrigerant Charge page 127 7 Clogging by foreign object Check the temperature difference between in 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 ĺ Remove the foreign object inside the pipe 8 The indoor unit inle...

Page 256: ...age 253 Note Higher inlet pressure by the high pressure sensor than the actual pressure causes insufficient capac ity SW4 setting SW6 10 OFF For how to read the SW settings refer to the fol lowing page s 9 1 1 How to Read the LED page 301 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 i...

Page 257: ...Change 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 ĺ Remove th...

Page 258: ...lay with SW4 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 SW4 to check whether the freeze proof operation runs properly and check the temperature 4 Thermistor failure Refer to the following page s 9 LED Status Indica tors on the Outdoor Unit Circuit Board ...

Page 259: ...d of the transmission line is grounded 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 T...

Page 260: ...grounding is provided the noise on the transmission 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 pow...

Page 261: ...n line and the communication 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 con...

Page 262: ...igh 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 high p...

Page 263: ... 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 pressure with the self diagnosis LED1 1 When the pre...

Page 264: ...k whether the valve has no faults and the electricity runs between where and where Do not touch the pipe when checking 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 21S4b 4 way switching valve 21S4c 4 way switching valve 21S4c is present only on the P...

Page 265: ...e SV5b is present only on the P120 P144 and P168 models This solenoid valve is a switching valve that opens when energized If checking by listening to the sound is difficult because SV5b is switched at the same time as 21S4b during cooling you can check whether or not the refrigerant is flowing by the temperature of the pipes before and after 5 In the case of SV9 Solenoid valve This solenoid valve...

Page 266: ...ity is low the revolution of the fan may change If the fan does not move or it vibrates Fan board problem or fan motor problem is suspected For details refer to the following page s TLMU 8 9 6 Checking the Fan Motor for Ground Fault and Coil Resistance Problems page 268 8 9 7 Checking the Fan Board Error Detection Circuit at No Load page 268 8 9 8 Checking the Fan Inverter for Damage at No Load pa...

Page 267: ...s 1 Indoor unit control board and the LEV Indoor unit Linear expansion valve 2 Outdoor unit control board and the LEV Outdoor unit Linear expansion valve Note The connector numbers on the intermediate connector and the connector on the control board differ Check the color of the lead wire to judge the number Control board Drive circuit LEV M 5 5 2 2 1 1 3 3 4 4 6 6 DC12V Red Intermediate connector...

Page 268: ...on the indoor unit circuit board sends a 2200 pulse signal to the indoor unit LEV and a 3200 pulse signal to the outdoor unit LEV to determine the valve position and always brings the valve to the position as indicated by A in the diagram When the 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 so...

Page 269: ... 4 3 2 1 8 1 When the LEV opening angle does not change all the output phases will be off 2 When the output is open phase or remains ON the motor cannot run smoothly and rattles and vibrates Output phase number Output state When the power is turned on the valve closing signal of 520 pulses will be output from the indoor board to LEV to fix the valve position It must be fixed at point A Pulse signa...

Page 270: ...is normal Replace the LEV coils Indoor Measure the resistance between coils red white red orange red yellow red blue with a tester When the resistance is in the range of 100ȍ 10 the LEV is normal Replace the LEV coils Outdoor LEV2a LEV2b Measure resistance between the coils red white red orange brown yellow brown blue using a tester They are normal if resistance is 46ȍ 3 Replace the LEV coils Outd...

Page 271: ...re pulled out without the body gripped undue force will be applied and the pipe will be bent 3 Installing the coils Fix the body tightly at the bottom Part A in the figure so that the body will not move then insert the coils from the top and insert the coil stopper securely in the pipe on the body Hold the body when pulling out the coils to prevent so that the pipe will not be bent If the coils ar...

Page 272: ...il After checking that the stopper is re moved pull up and out the coil When removing the coil hold the LEV body securely to prevent undue force from being placed on the pipe and bending the pipe 3 Installing the coil Securely hold the bottom of the LEV section A in the figure insert the coil from above and turn the coil until the coil stopper is properly installed on the LEV body When removing th...

Page 273: ...er to the wiring nameplate for details 3 To connect wiring to TB7 check that the voltage is 20 VDC or below 4 Reconnect the connector CNINV back to the fan board and reconnect the connector CN1 or CNFAN back to the inverter board after servicing 5 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 i...

Page 274: ...king the Fan Board Error Detection Circuit at No Load page 268 8 9 8 Checking the Fan Inverter for Damage at No Load page 269 8 9 9 Checking the Fan Inverter for Damage with Load page 270 8 The fan motor shakes violently at all times or makes an abnormal sound Check the inverter frequency on the LED monitor If the frequency indicates that the units are in operation refer to the following page s 8 ...

Page 275: ...sconnect the inverter out put wire from the output ter minals U V W of the IPM 2 Logic error Error code 4220 Detail code No 111 Refer to the following page s 8 9 14 Troubleshooting Problems with Intelli gent Power Module page 273 Replace the IPM and put the outdoor unit back into operation If the problem persists replace the INV board Replace the INV board and put the out door unit back into opera...

Page 276: ...e imbal ance between the wires Normal Turn off SW1 1 5 Put the outdoor unit into oper ation Check the inverter output voltage after the inverter out put frequency has stabilized P168 model 1 Inverter related problems are detected Turn off SW1 1 and go to section 8 9 2 1 Remove power supply 2 Inverter voltage is not out put Check the connection between the IPM and the CNIPM on the INV board Replace...

Page 277: ...r may be locked 2 There is a voltage imbal ance between the wires af ter the inverter output voltage is stabilized Greater than the larger of the following values imbal ance of 5 or 5V If there is a voltage imbalance P72 P96 P120 P144 models Replace the INV board P168 model Replace the IPM If the problem persists replace the INV board If the problem persists after replacing the above parts go to s...

Page 278: ...cted Change fan board 2 Disconnect the connector CNINV from the fan board 2 Less than 5V unbalance in the wiring Change fan board 3 Set fan board switch SW1 1 to ON 3 No unbalanced voltage in the wiring After 30 second detail code 132 is produced and the system stops Normal After checking return SW1 CNINV 4 Turn on breaker 5 Operate unit After about 30 seconds under no load with constant voltage o...

Page 279: ...hange fan motor 4 Sensor error during operation Check code 5305 5306 Detail code 132 133 a Check for gusts or windy conditions b If no issues with wind but the error is still present change Fan board c Change fan motor if Fan board change doesn t resolve issue 5 Voltage overload error Check code 4225 4226 Detail code 109 a Check for gusts or windy conditions b Change Fan board if it is not windy 6...

Page 280: ...Rush current protection resistor Electromagnetic relay DC reactor b A compressor ground fault can be consid ered Go to 8 9 3 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...

Page 281: ...ured without the need to remove the noise filter board 22 ȍ 10 Electromagnetic relay 72C This electromagnetic relay is rated at 200VAC and is driven by a coil The resistance between the coils in row A cannot be measured with a tester Check only for shorting DC reactor DCL Measure the resistance between terminals 1 ȍ or lower almost 0 ȍ Measure the resistance between terminals and the chassis Curre...

Page 282: ...f of the result that is measured at the same measurement 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 resistanc...

Page 283: ...ent Check the polarity before measuring On the tester black normally indicates plus Check that the resistance is not open ȍ or not shorted to 0 ȍ The values are for reference and the margin of errors is allowed The result that is more than double or half of the result that is measured at the same measurement point is not allowed Disconnect all the wiring connected the INV board and make the measur...

Page 284: ...d external diagram Judgment value reference Black SC P1 TB N SC R SC S SC T Red SC P1 5 200 ȍ 5 200 ȍ 5 200 ȍ TB N SC R 5 200 ȍ SC S 5 200 ȍ SC T 5 200 ȍ Black SC P2 TB N SC U SC V SC W Red SC P2 5 200 ȍ 5 200 ȍ 5 200 ȍ TB N SC U 5 200 ȍ SC V 5 200 ȍ SC W 5 200 ȍ SC P1 SC P2 TB N SC T SC S SC R SC U SC V SC W TB P ...

Page 285: ...rotates due to a strong wind there is a risk of an electric shock because the main circuit capacitor will be charged Refer to the wiring nameplate for details 3 To connect wiring to TB7 check that the voltage is 20 VDC or below 4 Reconnect the connector CNINV back to the fan board and reconnect the connector CN1 or CNFAN back to the inverter board after servicing 5 The IPM on the inverter becomes ...

Page 286: ...r for Damage with Load page 281 8 The fan motor shakes violently at all times or makes an ab normal sound Check the inverter frequency on the LED monitor If the frequency indicates that the units are in operation refer to the following page s 8 10 7 Checking the Fan Board Error Detection Circuit at No Load page 279 8 10 8 Checking the Fan Inverter for Damage at No Load page 280 8 10 9 Checking the...

Page 287: ...failure Error if less than 1 Mohm Check that there is no liquid refrigerant in the compressor If there is none replace the compres sor 2 Compressor coil resistance failure Coil resistance value of 0 71 ohm 20 C 68 F P72 model Coil resistance value of 0 32 ohm 20 C 68 F P96 P144 models Replace the compressor Items to be checked Phenomena Remedy 1 Remove power supply 1 Inverter related problems are ...

Page 288: ...e high pressure with LED monitor for changes Replace the compressor if there is no pressure difference the compressor may be locked 2 There is a voltage imbalance between the wires after the inverter output voltage is stabilized Greater than the larger of the following values imbalance of 5 or 5V Replace the INV board if there is a voltage imbalance Check the belt heater for problems if there is n...

Page 289: ...d 2 Disconnect the connector CNINV from the fan board 2 Less than 5V unbalance in the wir ing Change fan board 3 Set fan board switch SW1 1 to ON 3 No unbalanced voltage in the wiring After 30 second detail code 132 is produced and the system stops Normal After checking return SW1 CNINV 4 Turn on breaker 5 Operate unit After about 30 seconds under no load with constant voltage output the code belo...

Page 290: ... doesn t re solve issue change fan motor 4 Sensor error during operation Check code 5305 5306 Detail code 132 133 a Check for gusts or windy conditions b If no issues with wind but the error is still present change Fan board c Change fan motor if Fan board change doesn t resolve issue 5 Voltage overload error Check code 4225 4226 Detail code 109 a Check for gusts or windy conditions b Change Fan b...

Page 291: ... 8 10 13 Simple Check on Inverter Circuit Compo nents page 283 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 Se...

Page 292: ...ot allowed 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 r...

Page 293: ...ent value reference Black SC P1 FT N SC L1 SC L2 SC L3 Red SC P1 5 200 ȍ 5 200 ȍ 5 200 ȍ FT N SC L1 5 200 ȍ SC L2 5 200 ȍ SC L3 5 200 ȍ Black SC P2 FT N SC U SC V SC W Red SC P2 5 200 ȍ 5 200 ȍ 5 200 ȍ FT N SC U 5 200 ȍ SC V 5 200 ȍ SC W 5 200 ȍ SC U SC W SC V FT N SC P1 SC P2 SC L1 SC L2 SC L3 ...

Page 294: ...nal block for MA remote controller Terminal 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 72C Fuse Surge protection INV board Control board Fan board 63H1 72C DC DC converter Detection circuit for the power supply to the transmission line M NET board DC DC converter Microcomputer Microcomputer Microco...

Page 295: ...ter 5 V Power supply 16 V Power supply Inverter Inverter drive circuit Smoothing capacitor AC 208 230 V Terminal block for power source TB1 Noise filter Noise filter Fuse Fuse Fuse Fuse Surge protection INV board Control board Fan board 63H1 72C DC DC converter Detection circuit for the power supply to the transmission line M NET board DC DC converter Microcomputer Microcomputer Microcomputer 5 V ...

Page 296: ...omputer 5 V Power supply 12 V Power supply DC DC converter Fuse Inverter Compressor Heat exchanger fan 1 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 16 V Power supply Fuse Detection circuit for the power supply to the tr...

Page 297: ...resistance R1 Fix the wiring and connector 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 CN62 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 voltag...

Page 298: ...2 and CNIT and check for 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 CN62 CNPS CN102 and CNIT and check for proper connection of conne...

Page 299: ...0 V AC 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 16 V Power supply 12V Power supply 30 V Power supply Relay drive ci...

Page 300: ...use 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 16 V Power supply 12V Power supply 30 V Power supply Relay drive circuit Relay 5 V Power supply 5 V Power supply 17V Power supply Smoothing capacitor In...

Page 301: ...upply problems 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 fus...

Page 302: ...W3 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 values of Tc and TH6 To display the values on the LED screen use the self diagnosis switch SW4 when SW6 10 is set to OFF on the outdoor unit control board 1 When Tc TH6 is 10 C 18 F or mor...

Page 303: ...etting of the remote controller for all the indoor units to the heating mode 3 Check that all the indoor units are performing a heating operation 2 Stop all the indoor units and stop the compressor 1 To stop all the indoor units and the compressors turn SW4 769 from ON to OFF when SW3 1 on the outdoor control board is ON 2 Check that all the indoor units are stopped 3 Close the service valves BV1 ...

Page 304: ...6 to remove the compressor components and replace the compressor Reassemble them in the reverse order after replacing the compressor 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 ...

Page 305: ...ight Protection for the sealing 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 7 Do not change the compressor fixing bracket before the compressor needs replacing ...

Page 306: ...ing the brazing work consider measures to prevent the temperature of the joint part C from rising such as covering the entire joint with a cloth that is sufficiently wet Before beginning the replacement work also give sufficient consideration to preventing the flame contacting the aluminum part during brazing because aluminum melts at a lower temperature than copper Aluminum pipe B Joint part C Co...

Page 307: ...r Supply Circuit page 292 2 If the LED error display becomes lit when the power is turned on with all the connectors on the control board except CNDC disconnected 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 ...

Page 308: ...apter 9 LED Status Indicators on the Outdoor Unit Circuit Board 9 1 LED Status Indicators 301 9 1 1 How to Read the LED 301 9 1 2 Initial LED Display 302 9 1 3 Clock Memory Function 303 9 2 LED Status Indicators Table 304 ...

Page 309: ... 300 HWE14080 GB ...

Page 310: ...and temperature are examples of numerical values and operating conditions and the on off status of solenoid valve are examples of flag display SW4 10 is set to 0 on the LED Status Indicators Table In the example above 1 through 9 are set to OFF and 10 is set to ON 1 Display of numerical values Example When the pressure data sensor reads 18 8kg cm2 Item No 58 The unit of pressure is in kg cm2 Use t...

Page 311: ...r supply board or if the circuit board has failed Or there may be no LED display How to convert HP capacity to Model name HP capacity is the capacity of outdoor unit that is shown on LED display at initial setting Please refer to the following table to covert from HP capacity to Model name No Item Display Remarks 1 Software version 0103 Version 1 03 2 Refrigerant type 410 R410A 3 Model and capacit...

Page 312: ... off When the power 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 AG 150A adjusts the time once a day When the system controller is connected the time will be automatically updated to the correct current time ...

Page 313: ... 0100000000 Check error display 3 Including IC 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 SV1a SV2 A A Bottom 21S4b SV5b 4 0010000000 Relay out put display 3 Top 21S4c SV9 Power sup ply for indoor transmis sion line A A Bottom 7 1110000000 Special control Retry opera tion Emergency opera...

Page 314: ...nit 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 No 47 Unit No 48 19 1100100000 Top Unit No 49 Unit No 50 Bottom 20 0010100000 Indoor unit...

Page 315: ...ible stop Standby Cooling Heating B 42 0101010000 Outdoor unit control mode Stop Thermo OFF Abnormal stop Scheduled control Initial start up Defrost Oil balance Low fre quency oil recovery A A 43 1101010000 Warm up mode Refrigerant recovery A A 45 1011010000 TH4 99 9 to 999 9 A A The unit is C 46 0111010000 TH3 99 9 to 999 9 A A 47 1111010000 TH7 99 9 to 999 9 A A 48 0000110000 TH6 99 9 to 999 9 A...

Page 316: ...101000 Number of times error occurred during crank case heating by com pressor motor 0000 to 9999 A A Number of times INV er ror occurred during IH crankcase heating by compressor motor 93 1011101000 All AK OC OS 0000 to 9999 B 94 0111101000 AK 0000 to 9999 A A 95 1111101000 FAN1 0000 to 9999 A A Fan output 96 0000011000 Fan inverter output rpm FAN1 0000 to 9999 A A rpm 97 1000011000 FAN2 0000 to ...

Page 317: ...se High pres sure drop Low pres sure drop Abnormal Td rise A A Stays lit for 90 seconds after the completion of backup control 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 129 1000000100 Integrated operation time of compressor for rotation purpose...

Page 318: ...details of inverter 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 in...

Page 319: ...start up Defrost Oil balance Low fre quency oil recovery A A 209 1000101100 Warm up mode Refrigerant recovery A A 211 1100101100 Relay output display 1 Lighting Comp in op eration 72C OC Always lit A A 212 0010101100 Relay out put display 2 Lighting Top 21S4a SV1a SV2 A A Bottom 21S4b SV5b 213 1010101100 Relay out put display 3 Lighting Top 21S4c SV9 Lit while power to the indoor units is being su...

Page 320: ...P frequency 0000 to 9999 A A 262 0110000010 COMP operating fre quency 0000 to 9999 A A The unit is rps 264 0001000010 All AK OC OS 0000 to 9999 B 265 1001000010 AK 0000 to 9999 A A 266 0101000010 FAN1 0000 to 9999 A A Fan inverter output 267 1101000010 Fan inverter output rpm FAN1 0000 to 9999 A A rpm 268 0011000010 FAN2 0000 to 9999 A A Fan inverter output 269 1011000010 Fan inverter output rpm F...

Page 321: ...Upper 4 digits 0000 to 9999 A A Count up at start up The unit is Time 295 1110010010 COMP number of start stop events Lower 4 digits 0000 to 9999 A A 300 0011010010 Integrated operation time of compressor for rotation purpose 0000 to 9999 B The unit is h Error history No SW4 When SW6 10 is set to OFF Item Display Unit A B 1 Remarks 1234567890 LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8 OC OS 1 A The condition...

Page 322: ...10 is set to OFF Item Display Unit A B 1 Remarks 1234567890 LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8 OC OS 301 1011010010 Power supply unit OC OS 1 OS 2 ļ Address B 302 0111010010 Start up unit OC OS 1 OS 2 ļ Address B 1 A The condition of either OC or OS is displayed individually B The condition of the entire refrigerant system is displayed ...

Page 323: ...Address 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...

Page 324: ... capacity 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...

Page 325: ...400 0000100110 IC50 Address capacity code 0000 to 9999 0000 to 9999 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 SW4 When SW6 10 is set to OFF Item Display Unit A B 1 Remarks 1234567890 L...

Page 326: ...temperature 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 99...

Page 327: ...43 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 IC49Suction temperature 99 9 to 999 9 457 1001001110 IC50 Suction temperature ...

Page 328: ... temperature 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 Liqui...

Page 329: ...00 0010111110 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 9...

Page 330: ... A 513 1000000001 IC FU address Count up display of number of connected units B 514 0100000001 RC 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 ĺ Refrigerant type ĺ Model and capacity ĺ Communication address A A 518 0110000001 OC address OC address display B 1 A The condi...

Page 331: ...4 0110100001 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 IC...

Page 332: ...pipe temperature 99 9 to 999 9 559 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 temperatur...

Page 333: ... to 999 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 ...

Page 334: ... to 999 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 ...

Page 335: ... to 999 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 ...

Page 336: ... to 999 9 661 1010100101 IC39SC 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 ...

Page 337: ...our minute 693 1010110101 Time of error detection 2 2 00 00 to 99 12 1 to 31 Year and month and date alternate display 694 0110110101 Time of error detection 3 00 00 to 23 59 Hour minute 695 1110110101 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 detectio...

Page 338: ...100001101 Time of error 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 backu...

Page 339: ...EV opening 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 I...

Page 340: ...LEV opening 0000 to 9999 755 1100111101 IC42 LEV opening 0000 to 9999 756 0010111101 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 ...

Page 341: ... 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 791 1110100011 IC28 Operation mode 792 0001100011 IC29 Operation mode 793 1001100011 IC30 Operation...

Page 342: ...ration 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 filter 0000 to 9999 819 1100110011 IC6 filter 0000 to 9999 820 0010110011 ...

Page 343: ...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 0000101011 IC35 filter 0000 ...

Page 344: ...ter 0000 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 SW4 When SW6 10 is set to OFF Item Display Unit A B 1 Remarks 1234567890 LD1 LD2 LD3 LD4 LD5 LD6 LD7 LD8 OC OS 1 ...

Page 345: ... 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 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 884 0010111011 Fan board address 5 reset counter 0 to 254 A A The unit is time 885 1010111011 Fan board address 6 reset counter 0 to 254 A A 1 A The condition of eith...

Page 346: ......

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Mitsubishi Electric R410A, Service Handbook

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