Mitsubishi Electric PFD-P250VM-E Page 221 Service Handbook Download

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[8-8 Troubleshooting LEV Problems ]

chapter 8

BS_08_C

8 Troub

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ting Bas

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toms

8-8-2

Possible Problems and Solutions

The specifications of the outdoor unit (outdoor LEV) and the indoor unit (indoor LEV) differ. Therefore, remedies for each fail-

ure may vary. Check the remedy specified for the appropriate LEV as indicated in the right column.

Malfunction

mode

Judgment method

Remedy

Target

LEV

Microcomputer

driver circuit fail-

ure

Disconnect the control board connector and connect the check

LED as shown in the figure below.

Resistance : 0.25W 1k

Ω

LED : DC15V 20mA or more

When the main power is turned on, the indoor unit circuit board

outputs pulse signals to the indoor unit LEV for 10 seconds, and

the outdoor unit circuit board outputs pulse signals to the outdoor

unit LEV for 17 seconds.

If any of the LED remains lit or unlit, the drive circuit is faulty.

When the drive circuit has a

problem, replace the control

board.

Indoor

Outdoor

LEV mechanism

is locked

If the LEV is locked, the drive motor runs idle, and makes a small

clicking sound.

When the valve makes a closing and opening sound, the valve

has a problem.

Replace the LEV.

Indoor

Outdoor

Disconnected or

short-circuited

LEV motor coil

Measure the resistance between coils (red-white, red-orange,

brown-yellow, brown-blue) with a tester. When the resistance is

in the range of 150

Ω

± 10%, the LEV 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 100

Ω

± 10%, the LEV is normal.

Replace the LEV coils.

Outdoor

(LEV2a,

LEV2b)

Measure the resistance between coils (red - white, red - orange,

brown - yellow, brown - blue) with a tester. When the resistance

is in the range of 46

Ω

± 3%, the LEV is normal.

Replace the LEV coils.

Outdoor

(LEV1,

LEV9)

Incomple sealing

(leak from the

valve)

When checking the refrigerant leak from the indoor LEV, run the

target indoor unit in the fan mode, and the other indoor units in

the cooling mode. Then, check the liquid temperature (TH2) with

the self-diagnosis LED. When the unit is running in the fan mode,

the LEV is fully closed, and the temperature detected by the

thermistor is not low. If there is a leak, however, the temperature

will be low. If the temperature is extremely low compared with the

inlet temperature displayed on the remote controller, the LEV is

not properly sealed, however, if there is a little leak, it is not nec-

essary to replace the LEV when there are no effects to other

parts.

If there is a large amount of

leakage, replace the LEV.

Indoor

Faulty wire con-

nections in the

connector or

faulty contact

Check for loose pins on the connector and check the col-

ors of the lead wires visually

Check the continuity at the

points where an error occurs.

Indoor

Outdoor

Disconnect the control board's connector and conduct a

continuity check using a tester.

6
5
4
3
2
1

1 k

LED

Thermistor
(liquid piping
temperature detection)

Linear Expansion Valve

0000004498.BOOK 22 ページ２０１８年１月５日　金曜日　午前１０時３８分

Summary of Contents for PFD-P250VM-E

Page 1: ...AIR CONDITIONER 2017 Service Handbook PUHY P250YNW A PUHY P500YSNW A PFD P250VM E PFD P500VM E Model ...

Page 2: ...install the unit in a place where large amounts of oil steam organic solvents or corrosive gases such as sulfuric gas are present or where acidic alkaline solutions or sprays containing sulfur are used fre quently These substances can compro mise the performance of the unit or cause certain components of the unit to corrode which can result in refrigerant leakage wa ter leakage injury electric sho...

Page 3: ...l of the unit The refrigerant oil and the refrigerant in the unit will pose a risk of environmental pollution fire or explosion To reduce the risk of fire or explosion do not place flammable materials or use flam mable sprays around the unit Do not operate the unit with the panels and guards removed Rotating hot or high volt age parts may cause injury electric shock or fire Do not sit stand or pla...

Page 4: ...ore operating the unit Note that some ac cessories may be taped to the unit Properly install all accessories that are required Fail ing to remove the packing materials or fail ing to install required accessories may result in refrigerant leakage oxygen starva tion smoke or fire Consult your dealer and take appropriate measures to safeguard against refrigerant leakage and resultant oxygen starvatio...

Page 5: ... before insulating the pipe connections Refrigerant detector may not be able to properly detect refrigerant leak from pipe connections cov ered with insulation Before brazing connecting pipes make sure to remove them from the service valve Fail ure to do so may heat up the valve resulting in unit malfunctions wire burn damages and refrigerant leakage that can pose oxy gen starvation To prevent dam...

Page 6: ...at meets local electrical codes or overcurrent breaker The use of improperly rated breakers or the substitution of fuses with steel or copper wire may result in elec tric shock malfunction smoke or fire To reduce the risk of current leakage over heating smoke or fire use properly rated cables with adequate current carrying ca pacity Proper grounding must be provided by a li censed electrician Do n...

Page 7: ...also adversely af fect the operation of these types of equip ment by creating electrical noise Use the tools specifically designed for use with the specified refrigerant If other tools are used refrigerant oil will deteriorate and the compressor will malfunction Use refrigerant piping made of phosphorus deoxidized copper copper and copper alloy seamless pipes that meets local require ments Pipe jo...

Page 8: ... Unit 16 Chapter 4 Electrical Components and Wiring Diagrams 4 1 Circuit Board Arrangement 1 4 2 Circuit Board Components 5 4 3 Electrical Wiring Diagrams 12 4 4 Transmission Booster Electrical Wiring Diagrams 15 Chapter 5 Control 5 1 Dipswitch Functions and Factory Settings 1 5 2 Outdoor Unit Control 9 5 3 Indoor Unit Control 20 5 4 Operation Flow Chart 24 Chapter 6 Test Run 6 1 Read before Test ...

Page 9: ...8 9 Troubleshooting Inverter Problems 25 8 10 Control Circuit 40 8 11 Measures for Refrigerant Leakage 43 8 12 Parts Replacement Instructions 45 8 13 Troubleshooting Problems Using the LED Status Indicators on the Outdoor Unit 70 8 14 Replacement Instructions for Motor and Bearing Indoor Unit 71 8 15 Maintenance Inspection Schedule 77 Chapter 9 USB Function 9 1 Service Overview 1 9 2 Operation Dat...

Page 10: ...rials 3 1 2 2 Storage of Piping Materials 5 1 2 3 Pipe Processing 5 1 2 4 Characteristics of the New and Conventional Refrigerants 6 1 2 5 Refrigerant Oil 7 1 3 Working with Refrigerant Piping 8 1 3 1 Pipe Brazing 8 1 3 2 Air Tightness Test 9 1 3 3 Vacuum Drying 10 1 3 4 Refrigerant Charging 11 1 4 Precautions for Wiring 12 1 5 Cautionary notes on installation environment and maintenance 14 000000...

Page 11: ...GB_BS_01_C 0000004491 BOOK 2 ページ２０１７年１２月２６日火曜日午後１時１０分 ...

Page 12: ... the correct use of tools refer to the following page s 1 1 2 Tool Preparation 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 ty...

Page 13: ... 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 valve...

Page 14: ...nnealed pipes have been used for older model units when a diameter of the pipe is up to φ19 05 3 4 For a system that uses R410A use pipes that are made with 1 2H material Drawn Annealed pipes may be used for pipes with a diameter of φ19 05 3 4 and a radial thickness of 1 2 t The figures in the radial thickness column are based on the Japanese standards and provided only as a reference Use pipes th...

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

Page 16: ...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 Processing Use...

Page 17: ...d 3 Pressure characteristics The pressure in the system using R410A is 1 6 times as great as that in the system using R22 New Refrigerant HFC type Conventional Refriger ant HCFC type R410A R407C R22 R32 R125 R32 R125 R134a R22 Composition wt 50 50 23 25 52 100 Type of Refrigerant Pseudo azeotropic Refrigerant Non azeotropic Refrigerant Single Refrigerant Chloride Not included Not included Included...

Page 18: ...r 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 scroll L...

Page 19: ...lux 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 contains chloride Res...

Page 20: ...ount Refrigerant R410A must be charged in its liquid state vs gaseous state 2 Reasons Oxygen if used for an air tightness test poses a risk of explosion Only use nitrogen to check air tightness Refrigerant R410A must be charged in its liquid state If gaseous refrigerant in the cylinder is drawn out first the composition of the remaining refrigerant in the cylinder will change and become unsuitable...

Page 21: ... vacuum drying re moves moisture in the pipes Verify that the vacuum degree has not risen by more than 1Torr 130Pa 1hour after evacuation A rise by less than 1Torr 130Pa is acceptable If the vacuum is lost by more than 1Torr 130Pa conduct evacuation following the instructions in section 6 Special vacuum drying 5 Procedures for stopping vacuum pump To prevent the reverse flow of vacuum pump oil ope...

Page 22: ...ant 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 following pa...

Page 23: ... 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 controller may detect an error and send an error notice if the outdoor unit fan is rotated by e...

Page 24: ... 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 Power supply terminal block indoor outdoor transmission line terminal block and centralized controller transmission line Mark a line Place the round termi...

Page 25: ...re to salt water mist 2 Avoid installing a sun shade over the outdoor unit so that rain will wash away salt deposits off the unit 3 Install the unit horizontally to ensure proper water drainage from the base of the unit Accumulation of water in the base of the outdoor unit will significantly accelerate corrosion 4 Periodically wash salt deposits off the unit especially when the unit is installed i...

Page 26: ...Refrigerant Circuits 5 2 4 7 Various Control Methods Using the Signal Input Output Connector on Outdoor Unit 6 2 5 Demand Control Overview 8 2 6 System Connection Example 10 2 7 Example System with an MA Remote Controller 11 2 7 1 System with One Refrigerant 11 2 7 2 System with Two Refrigerant Circuits 13 2 7 3 System in which Two MA Remote Controllers are Connected to One Indoor Unit 15 2 7 4 Sy...

Page 27: ...GB_BS_02_C 0000004492 BOOK 2 ページ２０１８年１月５日金曜日午前１０時１２分 ...

Page 28: ...een power source start stop Fixed to Disabled in the PFD type indoor units 4 The PFD type indoor units and other types of indoor units cannot be grouped 5 The following functions are limited when the system controller such as AE 200E is connected 1 To perform group operation in the system with two refrigerant circuits combination of two outdoor units and one indoor unit P500 model only the address...

Page 29: ...refer to the following page s 2 7 Example System with an MA Remote Controller Types and maximum allowable length of cables Control lines are categorized into 2 types transmission line and remote controller line Use the appropriate type of cables and observe the maximum allowable length specified for a given system If a given system has a long transmission line or if a noise source is located near ...

Page 30: ... with an MA Remote Controller before performing wiring work Set the switches while the power is turned off If the switch settings are changed while the unit is being powered those changes will not take effect and the unit will not function properly MA remote controller Cable type Type CVV Number of cores 2 core cable Cable size 0 3 to 1 25mm2 1 AWG22 to 16 Maximum overall line length 200m 656ft ma...

Page 31: ... system and 50 00 System configuration Connection to the system controller Power supply unit for transmis sion lines Grouping the in door units con nected to different outdoor units Power supply switch connector connection System in which indoor units connected to one outdoor unit Not connected Leave the connector on CN41 as it is Factory setting With connection to indoor outdoor transmission line...

Page 32: ...specification 2 4 5 Settings of MA Remote Controller Main Sub Switching Switch Main sub settings are available on the MA remote controller Factory setting is Main When two remote controllers are con nected set either of them to Sub 2 4 6 Connection of Two Refrigerant Circuits When two refrigerant circuits are connected on site make the switch settings on the controller circuit board following the ...

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 Type Usage Function Terminal to be used 1 Option Input Prohibiting cooling operation thermo OFF by an external input to the outdoor unit It can be used as the DEMAND control device for each system DEM...

Page 34: ...current 0 1A Minimum applicable load 1mA at DC Relay circuit 2 External input adapter 3 CN3D 2 Optional part PAC SC36NA E or field supply X Low noise mode X Low noise mode Y Compressor ON OFF X Y Relay Contact rating voltage DC15V Contact rating current 0 1A Minimum appicable load 1mA at DC Y X CN3D Preparations in the field Maximum cable length is 10m External input adapter 2 Outdoor unit control...

Page 35: ... in the table above is an approximate value 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...

Page 36: ... DEMAND 75 Short circuit 0 Compressor OFF 50 8 levels of on DEMAND No 2 CN3D 1 2P Open Short circuit No 1 CN3D 1 2P 1 3P Open Short circuit Open Short circuit Open Open 100 50 88 75 Short circuit 50 0 38 25 Short circuit Open 88 38 75 63 Short circuit 75 25 63 50 If the step listed as the wrong example above is taken thermo may go off The percentage of the demand listed in the table above is an ap...

Page 37: ...d outdoor units Notes 1 System with one out door unit NO Manual address setup 2 Grouping of units in a system with multiple outdoor units NO Manual address setup 3 System with one out door unit With connection to transmission line for centralized control Manual address setup 4 System with one out door unit P250YNW only or P500YSNW only With connection to indoor outdoor transmission line Manual add...

Page 38: ...o indoor controllers controller circuit boards are equipped inside the P500 models of indoor units the board on No 2 side lower side is not used Do not con nect wiring to the lower controller circuit board 3 Maximum allowable length 1 Indoor outdoor transmission line Maximum distance 1 25mm2 AWG16 or larger L1 L2 200m 656ft Two indoor controllers controller circuit boards are equipped in the indoo...

Page 39: ...OS Units are designated as OC and OS in the descending order of capacity ascending order of address if the capacities are the same Procedures Unit or controller Address setting range Setting method Notes Factory setting 1 Indoor unit Main unit IC 01 to 50 Assign a sequential odd number starting with 01 to the upper in door controller 00 Sub unit IC 01 to 50 Assign sequential numbers start ing with...

Page 40: ...door units 5 When the power supply unit is connected to the trans mission line for centralized control leave the male con nector on the female power supply switch connector CN41 as it is Factory setting 3 Maximum allowable length 1 Indoor outdoor transmission line Maximum distance 1 25mm2 AWG16 or larger L1 L2 200m 656ft 2 Transmission line for centralized control Maximum line distance via outdoor...

Page 41: ...es Shielded cable connection To ground the shielded cable daisy chain the S termi nals on the terminal block TB7 on each of the outdoor units Connect the S shielded terminal on the terminal block TB7 on the outdoor unit whose male connector on CN41 was disconnected and connected to CN40 to the earth terminal on the electric box 3 Switch setting Address setting is required as follows 5 Address sett...

Page 42: ... the lower controller circuit board 4 No more than two MA remote controllers including both main and sub controllers can be connected to a group of indoor units If three or more MA remote controllers are connected remove the wire for the MA remote controller from the terminal block TB15 3 Maximum allowable length 1 Indoor outdoor transmission line Same as 2 7 1 2 MA remote controller wiring Maximu...

Page 43: ...t are automatically designated as OC and OS Units are designated as OC and OS in the descending order of capacity ascending order of address if the capacities are the same Procedures Unit or controller Address setting range Setting method Notes Factory setting 1 Indoor unit Main unit IC 01 to 50 Assign a sequential odd number starting with 01 to the upper in door controller 00 Sub unit IC 01 to 50...

Page 44: ...in and sub controllers can be connected to a group of indoor units If three or more MA remote controllers are connected remove the wire for the MA remote controller from the terminal block TB15 3 Maximum allowable length 1 Indoor outdoor transmission line Same as 2 7 1 2 MA remote controller wiring Maximum overall line length 0 3 to 1 25mm2 AWG22 to 16 m1 m2 m3 200m 656ft OC TB3 TB7 M1M2 M1M2 M1M2...

Page 45: ...d OS in the descending order of capacity ascending order of address if the capacities are the same Procedures Unit or controller Address setting range Setting method Notes Factory setting 1 Indoor unit Main unit IC 01 to 50 Assign a sequential odd number starting with 01 to the upper in door controller 00 Sub unit IC 01 to 50 Assign sequential numbers start ing with the address of the main unit in...

Page 46: ...length 190 623 or less Height difference Between indoor and outdoor units H 50 164 or less 40 131 or less when the outdoor unit is lower 15 49 when the outdoor temperature is 10 C 50 F or lower Between outdoor units h1 0 1 0 3 or less Unit m ft Allowable length Total pipe length L from the outdoor unit to the farthest indoor unit Actual length 165 541 or less Allowable height difference Height dif...

Page 47: ...pipes if the piping length exceeds 90 m 295 ft 2 Size of the refrigerant pipe between the first branch and the indoor unit indoor unit pipe size Outdoor unit set name total capacity Liquid pipe size mm inch Gas pipe size mm inch 250 model ø9 52 3 8 1 ø22 2 7 8 model Pipe diameter mm inch 250 model Liquid pipe ø9 52 3 8 Gas pipe ø22 2 7 8 500 model Liquid pipe ø15 88 5 8 Gas pipe ø28 58 1 1 8 00000...

Page 48: ...rance and Internal Components of Indoor Unit 3 3 2 1 External Appearance of Indoor Unit 3 3 2 2 Internal Components of Indoor Unit 5 3 3 Refrigerant Circuit Diagrams 9 3 3 1 System with one refrigerant circuit 9 3 3 2 System with two refrigerant circuits 11 3 4 Functions of the Major Components of Outdoor Unit 12 3 5 Functions of the Major Components of Indoor Unit 15 3 6 Procedure of Separating t...

Page 49: ...GB_BS_03_C 0000004493 BOOK 2 ページ２０１８年１月５日金曜日午前９時１１分 ...

Page 50: ...s of Outdoor Unit 3 1 1 External Appearance of Outdoor Unit 1 PUHY P250YNW A Fan guard Fan guard Fan Fan Fin guard Fin guard Control box INV BOX Control box INV BOX Control box MAIN BOX Control box MAIN BOX Drain pan Drain pan Front panel Front panel Heat exchanger Heat exchanger Front panel Front panel Rear panel Rear panel Side panel Side panel Internal panel Internal panel Internal panel Intern...

Page 51: ...ar expansion valve LEV1 Subcool coil Solenoid valve SV1a Linear expansion valve LEV9 Linear expansion valve LEV2a Linear expansion valve LEV2b Solenoid valve SV10 Solenoid valve SV9 Solenoid valve SV2 Liquid side valve BV2 Gas side valve BV1 Oil separator Compressor Compressor cover Low pressure sensor 63LS High pressure sensor 63HS1 High pressure switch 63H1 Accumulator Low pressure check joint C...

Page 52: ... Hole for the control wiring Lifting bolts 2 ø32 knock out hole Hole for the power supply Body Nomal Local 1380 Remote controller A Refrig piping gas ø22 2 braze Power supply White Operating Green Check Yellow Failure Red Accessory Filter Lamp view from A 320 220 1950 20 100 462 580 Panel ø32 knock out hole Air inlet Control box 50 140 Hole for the control wiring ø32 knock out hole Main drain pipi...

Page 53: ...r outlet Air inlet Power supply White Operating Green Check Yellow Failure1 Red Failure2 Red Normal Local Accessory view from A Air outlet Hole for liquid side pipe connecting or No 1 gas side pipe connecting ø 42 in 2 refrig circuit system Hole for No 2 gas side pipe connecting ø 42 in 2 refrig circuit system 100 100 1780 1940 100 20 20 20 65 321 100 410 359 241 740 359 580 305 320 220 370 20 Eme...

Page 54: ...3 2 2 Internal Components of Indoor Unit 1 PFD P250VM E model 1 Front view of indoor unit 2 Rear view of indoor unit Lock key X 2 Display lamp Panel for refrigerant circuit maintenance Panel for air filter maintenance Operation panel remote controller Panel for controller fan related parts maintenance 0000004493 BOOK 5 ページ２０１８年１月５日金曜日午前９時１１分 ...

Page 55: ...re Heat exchanger X 2 front back Sub drain pan Suction temperature thermistor on the right side of heat exchanger Linear expansion valve LEV Drain pan Drain hose Pulley X 2 Pipes gas liquid Fan motor V belt Controller Air filter Fan casing on the back of controller Discharge temperature thermistor on the left side of fan casing Drain hose Pipes gas liquid Fan casing 0000004493 BOOK 6 ページ２０１８年１月５日...

Page 56: ...Circuits 2 PFD P500VM E model 1 Front view of indoor unit 2 Rear view of indoor unit Lock key X 4 Panel for controller maintenance Display lamp Operation panel remote controller Panel for fan related parts maintenance Panel for refrigerant circuit maintenance Panel for air filter maintenance 0000004493 BOOK 7 ページ２０１８年１月５日金曜日午前９時１１分 ...

Page 57: ...cal switching switch SW9 Heat exchanger X 2 front No 1 back No 2 Sub drain pan Suction temperature thermistor on the right side of heat exchanger Linear expansion valve LEV Drain pan Operation panel Bearing Drain hose Pulley X 2 Pipes gas liquid Fan motor V belt Location of drain pan overflow detection float switch Controller Air filter Fan casing Discharge temperature thermistor on the left side ...

Page 58: ...cuit Diagrams 3 3 1 System with one refrigerant circuit 1 PUHY P250YNW A SCC LEV1 LEV9 ACC 63H1 21S4a ST6 63HS1 63LS ST7 CJ1 CJ2 Comp O S LEV2a LEV2b ST2 BV2 BV1 21S4b SV9 SV10 SV2 ST18 Hex for INV cooling ST1 FAN Motor SV1a CP1 CV1 HEX TH7 TH5 TH2 TH23 TH22 TH3 TH6 TH4 TH15 ST3 Rear Front 0000004493 BOOK 9 ページ２０１８年１月５日金曜日午前９時１１分 ...

Page 59: ...1 21S4b SV9 SV10 SV2 ST18 Hex for INV cooling ST1 FAN Motor SV1a CP1 CV1 HEX TH7 TH5 TH2 TH23 Gas twinning pipe Liquid twinning pipe TH22 TH3 TH6 TH4 TH15 ST3 Rear Front SCC LEV1 LEV9 ACC 63H1 21S4a ST6 63HS1 63LS ST7 CJ1 CJ2 Comp O S LEV2a LEV2b ST2 BV2 BV1 21S4b SV9 SV10 SV2 ST18 Hex for INV cooling ST1 FAN Motor SV1a CP1 CV1 HEX TH7 TH5 TH2 TH3 TH6 TH4 TH15 ST3 Rear Front 0000004493 BOOK 10 ページ...

Page 60: ...CJ2 Comp O S LEV2a LEV2b ST2 BV2 BV1 21S4b SV9 SV10 SV2 ST18 Hex for INV cooling ST1 FAN Motor SV1a CP1 CV1 HEX TH7 TH5 TH2 TH23 1 TH23 2 TH22 1 TH22 2 TH3 TH6 TH4 TH15 ST3 Rear Front SCC LEV1 LEV9 ACC 63H1 21S4a ST6 63HS1 63LS ST7 CJ1 CJ2 Comp O S LEV2a LEV2b ST2 BV2 BV1 21S4b SV9 SV10 SV2 ST18 Hex for INV cooling ST1 FAN Motor SV1a CP1 CV1 HEX TH7 TH5 TH2 TH3 TH6 TH4 TH15 ST3 Rear Front 00000044...

Page 61: ... Detects high pressure 2 Regulates frequency and pro vides high pressure protec tion Low pres sure sensor 63LS 1 Detects low pressure 2 Provides low pressure pro tection Pres sure switch 63H1 1 Detects high pressure 2 Provides high pressure pro tection 4 15MPa 601psi OFF setting Pressure 0 4 15 MPa 601psi Vout 0 5 3 5V 0 071V 0 098 MPa 14psi Pressure MPa 1 38 x Vout V 0 69 Pressure psi 1 38 x Vout...

Page 62: ... obtained based on the HPS data and TH3 val ue TH7 Outdoor temperature 1 Detects outdoor air tempera ture 2 Controls fan operation TH5 Pipe temperature LEV2 are controlled based on the 63LS and TH5 values TH6 Pipe temperature Controls LEV1 based on TH2 TH3 and TH6 data TH15 Compres sor shell bot tom temperature Detects compressor shell bottom temperature THHS Inverter heat sink temperature Inverte...

Page 63: ... by a stepping motor 0 480 pulses Same as indoor LEV The resistance val ue differs from that of the indoor LEV Refer to the follow ing page s 8 8 Troubleshooting LEV Problems LEV9 Refrigerant flow adjust ment Adjusts the flow of refrigerant by passed from the pipe for cooling the control board when the control board temperature rises LEV2a Refrigerant flow adjust ment DC12V Opening of a valve driv...

Page 64: ...ol Thermo 0 C 32 F 15kΩ 10 C 50 F 9 7kΩ 20 C 68 F 6 4kΩ 25 C 77 F 5 3kΩ 30 C 86 F 4 3kΩ 40 C 104 F 3 1kΩ Resistance check TH22 Pipe tempera ture Indoor unit control Freeze pre vention TH23 Gas pipe tem perature LEV control during cooling oper ation Superheat detection TH24 Discharge air temperature Controls indoor unit discharge thermostat Float Switch 33P1 Detects drain pan water level Contact Re...

Page 65: ... side panels 2 in this order by removing the hinges and the screws on the unit as shown in Fig 1 Open the filter cover and remove the filters 2 filters Model 500 Remove the front panels 4 rear panels 3 and the side panels 2 in this order by removing the hinges and screws on the unit as shown in Fig 1 Open the filter cover and remove the filters 3 filters 2 Disconnecting the electric wires Disconne...

Page 66: ...expansion valve wiring Thermistor wiring Float switch wiring Lamp wiring Remote controller wiring No 2 No 1 Fig 2 Model 500 Model 250 the wire from the lamp assy Bend the wire once and fix the wire Fix the wire from the fan motor Connect the wire from the lamp assy Connect the wire from the lamp assy 0000004493 BOOK 17 ページ２０１８年１月５日金曜日午前９時１１分 ...

Page 67: ...ottom section of the unit Top section of the unit Bottom Bottom Bottom Top Top Top Control box Motor Control box Motor Fan Supporting wood piece Supporting wood piece Heat exchanger Piping side Heat exchanger Piping side Fan Note 1 Peel off the pipe cover carefully The cover will be needed again when putting the units together 2 When loading the unit on an elevator place the separated sections upr...

Page 68: ...and bolts tightening torque 74N m Perform a test run and check for abnormal sound rattling and water leaks Using Fig 4 and Table 1 as a reference connect all connectors correctly Use a cable tie and bundle the wires as they were before Model 250 No 1 board Connector location on the board CN60 CN31 CN20 CN21 CN29 CN22 Connector location on the board Connector location on the adapter board No 1 boar...

Page 69: ... 3 6 Procedure of Separating the Indoor Unit 20 chapter 3 BS_03_C 3 Major Components Their Functions and Refrigerant Circuits 0000004493 BOOK 20 ページ２０１８年１月５日金曜日午前９時１１分 ...

Page 70: ...nit Control Board 5 4 2 2 Outdoor Unit Power supply board PS Board 6 4 2 3 Outdoor Unit Inverter Board INV Board 7 4 2 4 Outdoor Unit Fan Board 8 4 2 5 Outdoor Unit Noise Filter 9 4 2 6 Indoor Unit Control Board 10 4 2 7 Indoor Unit External Input Output Circuit Board 11 4 3 Electrical Wiring Diagrams 12 4 4 Transmission Booster Electrical Wiring Diagrams 15 0000004494 BOOK 1 ページ２０１７年１２月２６日火曜日午...

Page 71: ...GB_BS_04_C 0000004494 BOOK 2 ページ２０１７年１２月２６日火曜日午前１１時４３分 ...

Page 72: ...connector RYFAN1 in the INV box as it was 7 When opening or closing the front panel of the control box do not touch any of the internal components Before inspecting inside the control box turn off the power to the unit leave it turned off for at least 10 minutes and check that the voltage across Pin 1 and Pin 5 of connector RYPN in the INV box is 20 VDC or less It takes about 10 minutes to dischar...

Page 73: ...pter 4 BS_04_C 4 Electrical Components and Wiring Diagrams MAIN BOX 1 Leave the grounding connected during maintenance PS board Control board Note 1 Transmission cable terminal block TB3 TB7 0000004494 BOOK 2 ページ２０１７年１２月２６日火曜日午前１１時４３分 ...

Page 74: ...or has a locking function Check that the terminal is securely locked in place Press the tab in the middle of the terminal to remove it 3 Leave the grounding connected during maintenance RYFAN1 Noise filter Power supply terminal block PYPN 1 pin 5 pin Note 3 DC reactor DCL Fan board INV board back side In rush current resistor R1 R5 Note 2 The figure at left shows the unit seen from the left after ...

Page 75: ...Motor wiring Surge breaker 51F Fuse F1 Electro magnetic contactor 52F Relay X11 Z1 Z3 Controller board Transformer Circuit board for external I O Terminal block for transmission line on No 2 side upper Terminal block for MA remote controller lower Power supply terminal bed Terminal block for transmission line on No 1 side Motor wiring Surge breaker 51F Electro magnetic contactor 52F Relay X11 X12 ...

Page 76: ...ication signal input GND CN110 Open phase detection signal input GND CN51 12 VDC output Compressor ON OFF signal output Error signal output SWP3 Push switch Function setting LEV Drive signal output LED301 Maintenance LED SWU1 2 Address SW101 Dip switch Sensor input CNFG Ground TB7 Centralized control transmission terminal block Transmission line ground terminal TB3 Indoor outdoor transmission term...

Page 77: ...or transmission signal input output Centralized control system power supply output CNINT GND 5 VDC input Indoor unit system power supply ON OFF signal input CN101 Cooling fan ON OFF signal input Inverter reset signal input Locked cooling fan sensor output Locked cooling fan sensor output CNFAN1 FAN1INV power supply output 17 VDC output N CNFAN2 FAN2INV power supply output 17 VDC output N CNINV COM...

Page 78: ...ic shock when the outdoor unit fan rotates in windy conditions Refer to the wiring nameplate for details 5 After servicing reconnect the relay connector RYFAN1 of the fan as it was 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 resis...

Page 79: ... unit fan is not rotating and that the voltage across pins 1 and 5 of connector RYPN is 20 VDC or less 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 4 To connect wiring to TB7 check that the voltage is 20 VDC or below 5 After servicing reconnect the relay connector RYFAN1 of the fan as ...

Page 80: ...nput L2 TB11 Input L1 Ground TB22 Output L2 TB23 Output L3 TB21 Output L1 CN5 Output L1 N CN1 Output L2 N Ground Ground Ground F1 F2 F3 F4 Fuse 250 VAC 6 3 A CN2 Surge absorber circuit Surge absorber circuit Open phase detection circuit Open phase detection circuit CN3 Open phase detection circuit Open phase detection circuit 0000004494 BOOK 9 ページ２０１７年１２月２６日火曜日午前１１時４３分 ...

Page 81: ...ly input from transformer CNT Power supply output to transformer CN90 Fan output CNP Drain pump output CN60 LEV output SW1 2 3 4 Dip switch CN24 Control signal output CN51 Switch input LED1 LED2 CN31 Float switch input CN32 Switch input SW5 SWC Switching between discharge suction control Thermistor input CN20 CN21 CN29 CN22 CN33 Lamp output CN3A Remote controller connection 0000004494 BOOK 10 ページ ...

Page 82: ...al Input Output Circuit Board CN53 Indoor control board No 1 To CN51 CN54 Indoor control board No 2 To CN51 TB22 Relay contact output No 1 operation status No 1 error status No 2 operation status No 2 error status TB23 Input with voltage ON OFF TB21 Input no voltage ON OFF 0000004494 BOOK 11 ページ２０１７年１２月２６日火曜日午前１１時４３分 ...

Page 83: ...OFF ON OFF SW5 10 1 1 3 ON OFF 10 SWU1 SWP3 LED301 Display setting Function setting SW7 10 1 ON OFF SW101 10 1 ON OFF CN4A black 2 3 1 4 CN4 black 2 3 1 4 CNPS red 2 1 4 CN604 blue 2 1 CN603 blue 2 1 3 CN600 4 5 2 1 PS Board 1 3 CNINV yellow 2 1 CNFAN1 yellow 1 2 CNDC 4 5 1 2 CN101 4 blue CN304 2 1 blue CN303 2 1 4 3 2 1 CN202 CN100 red 1 3 DB2 IPM power supply circuit M NET power supply circuit C...

Page 84: ...rrent detection 51F Z1 ZNR2 52F Z3 51F 52F MF TH24 TH21 TH22 TH23 6 5 4 3 2 1 LEV SYMBOL NAME DSA1 Surge absorber LED display power supply F901 ZNR1 ZNR2 ZNR901 MF I B S B IFB TB2 TB5 TB15 TB21 TB22 TB23 F1 T LEV 52F 51F 33P1 RC L4 L3 L2 L1 Z3 Z1 X11 SWC I B SW14 I B SW12 I B SW11 I B SW9 SW4 I B SW3 I B SW2 I B SW1 I B Surge absorber board Switch outlet inlet temp control Float switch Fuse 6 3 6A...

Page 85: ... 8 0 8 7 6 5 4 3 2 1 No 2 FAN over current detection 51F Z1 ZNR2 Z2 52F Z3 TH24 2 TH21 2 TH22 2 TH23 2 51F 52F MF NAME SYMBOL Surge absorber DSA1 L5 ZNR1 ZNR2 ZNR901 LED display No 2 failure LED display status LED display check LED display power supply MA Remote controller RC TB21 TB15 TB5 1 2 TB2 IFB S B AD B I B 1 I B 2 MF Surge absorber board Switch outlet inlet temp control Float switch Varist...

Page 86: ...White White White White Blue Red Red DSA White White Blue Red Red Red Red Varistor Varistor Noise filter Stabilized power supply 4 3 2 1 1 2 3 CN2 CN1 Black Black Black Black Green Yellow 1 2 3 E 4 Choke coil 1 2 CN3 1 2 1 2 CN4 CN2 1 2 CN1 Electronic control board Black White Red Red Black S B A S B A Terminal block 2 for transmission line TB3 Expanded indoor unit side Terminal block 1 for transm...

Page 87: ... 4 4 Transmission Booster Electrical Wiring Diagrams 16 chapter 4 BS_04_C 4 Electrical Components and Wiring Diagrams 0000004494 BOOK 16 ページ２０１７年１２月２６日火曜日午前１１時４３分 ...

Page 88: ...an Control 12 5 2 9 Subcool Coil Control Linear Expansion Valve LEV1 12 5 2 10 Refrigerant Flow Control Linear Expansion Valves LEV2a and LEV2b 12 5 2 11 Control of Controller Cooling Function Electronic Expansion Valve LEV9 12 5 2 12 Control at Initial Startup 12 5 2 13 Emergency Operation Mode 14 5 2 14 Operation Mode 15 5 2 15 Demand Control 15 5 2 16 Control of IH energization without the comp...

Page 89: ...GB_BS_05_C 0000004495 BOOK 2 ページ２０１７年１２月２６日火曜日午前１１時４４分 ...

Page 90: ...Preset before shipment Varies with unit type and model 4 5 6 7 8 SW6 1 2 3 4 Model setting outdoor unit high static pressure setting Function depends on the setting combination with the SW6 5 setting Note 6 Factory setting OFF Before power on C 5 Model setting outdoor unit high static pressure setting Function depends on the setting combination with the SW6 4 setting Note 6 Factory setting OFF Bef...

Page 91: ...o an error stop See the relevant pag es for details 8 9 9 Checking the Fan Board for Damage at No Load No load opera tion disabled No load opera tion enabled Any time after power on C 3 4 Enables or disables no load operation of the right fan inverter The unit continues no load operation for 30 seconds and comes to an error stop See the relevant pag es for details 8 9 9 Checking the Fan Board for ...

Page 92: ...ethods Using the Signal Input Output Connector on Outdoor Unit 4 Operation noise is reduced by controlling the compressor frequencies and the rotation speed of the outdoor unit fans CN3D needs to be set Refer to the following page s 2 4 7 Various Control Methods Using the Signal Input Output Connec tor on Outdoor Unit 5 Operation noise is reduced by limiting the frequency of the compressor and rot...

Page 93: ...0 ON No 769 1000000011 Test run mode ON OFF Stops all ICs Sends a test run sig nal to all IC Anytime after power on A No 817 1000110011 Starts up drive recorder Enabled Disabled Anytime after power on A No 832 0000001011 Cumulative compressor operation time deletion Retained Cleared Any time after being energized When changed from OFF to ON C No 896 0000000111 Clearance of error history OC Retaine...

Page 94: ...N 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 For details refer to the following page s 8 9 9 Checking the Fan Board for Damage at N...

Page 95: ... Fan output 2500h Thermo ON signal Available Level External input MA remote controller Pulse Not available Available Not available Available Not available Available Refer to the combination with SW2 Not available LEV setting conversion function Reset of the integrated operation time Valid Invalid fan belt Reset of the integrated operation time Valid Invalid fan motor While the unit is stopped Remo...

Page 96: ... OFF when switching from OFF to ON Reset of the integrated operation time Resetting the integrated operation time according to the setting of SW7 1 and 7 2 Operation by switch setting ON 1 2 3 ON 1 2 3 Anytime after power on Normal control Compulsory thermo OFF Compulsory thermo OFF setting during test run used in the grouped indoor units connected to different outdoor units Function Operation by ...

Page 97: ... the switches 1 through 5 are set to ON and 6 through 10 are set to OFF Switch 2 1 Function Remote controller main sub setting At power on of the remote controller Normal startup Timer mode startup 3 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 W...

Page 98: ... switch SW4 on the 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 ...

Page 99: ...or less After the operation has stopped ON for 3 minutes Exception OFF when 63HS1 63LS is 0 2 MPa 29 psi or less During compressor operation at Fmin fre quency in the cooling mode and when the low pressure 63LS drops three or more minutes after compressor startup When low pressure 63LS drops below 0 23 MPa 33 psi When low pressure 63LS ex ceeds 0 38 MPa 55 psi When high pressure 63HS1 rises When 6...

Page 100: ...equen cy control convergent control and is performed in the following manner Periodic control cycle Periodic control is performed after the following time has passed 30 seconds after either compressor start up 30 seconds after frequency control based on discharge temperature or pressure limit The amount of frequency change The amount of frequency change is controlled to approximate the target valu...

Page 101: ...nit system the LEV closes 0 during cooling Thermo OFF 5 2 10 Refrigerant Flow Control Linear Expansion Valves LEV2a and LEV2b The valve opens to a specified angle during cooling Opening 2100 pulses Valve opening is controlled based on the values of high pressure 63HS1 discharge temperature TH4 low pressure 63LS and piping temperature TH5 The valve moves to the predetermined position while the unit...

Page 102: ...C and OS to simultaneously stay in operation Initial startup mode complete or the discharge superheat TH4 Tc is detected within 5 minutes of startup that remains above approximately 25 degrees for one minute or if the shell bottom SH TH15 Te is 15 deg or above for continuous 5 minutes 10 minutes after start up or the discharge superheat TH4 Tc is detected within 5 minutes of startup that remains a...

Page 103: ...h OC and OS Emergency operation pattern 2 outdoor units Trouble source Error codes that permit an emergency operation Error code description Compressor Fan motor Inverter 0403 Serial communication error 4220 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 5120 DCL tem...

Page 104: ...unit is serviced Have the unit serviced without delay to restore a normal operation 2 Communication circuit failure or when some of the outdoor units are turned off Emergency operation mode will not be performed if a fault occurs in internal external communication or OC OS communica tion 5 2 14 Operation Mode 1 Indoor unit operation mode The operation mode can be selected from the following 3 mode...

Page 105: ...me has passed since only one of the outdoor units started operation the unit in operation stops and the other outdoor unit starts operation automatically 1 Starting Conditions Air conditioning load that is calculated based on the return air temperature is 50 or above Operation frequencies of both indoor and outdoor units remain near the minimum level three minutes after start up 2 Stopping Conditi...

Page 106: ...entralized control TB7 on all applicable outdoor units Move the power jumper connected to CN41 to CN40 on only one of the outdoor units To supply power to the outdoor unit from a power supply unit leave the power jumper connected to CN41as it is factory setting 2 Check that the label on the indoor unit circuit board reads KE90D352 if it does not replace the circuit board 3 Set the SW1 9 and SW1 10...

Page 107: ...rors are detected by any unit in the group 3 Rotation Operation When the above starting conditions are met the control unit will bring the backup unit to stop and the system rotation timer starts counting When the system rotation timer reaches 480 hours units are rotated to become the backup unit When rotation is performed first the stopped backup unit is started then the system rotation timer is ...

Page 108: ...iated by starting the control unit in the test run mode via MA remote controller In this mode the system rotation timer setting is reduced to approximately three minutes from the usual 480 hours and the test run will automatically end when the control unit is rotated to the backup unit At the completion of the test run mode the system rotation timer setting goes back to 480 hours and this function...

Page 109: ... on two controller circuit boards must be equivalent 20HP only To perform suction temperature control Set SWC to Option To perform discharge temperature control Set SWC to Standard The TH21 value has gone up by 1 C or more compared to its value during Thermo OFF TH24 Discharge thermistor TH21 Suction thermistor b Thermo OFF Condition When Dipsw4 5 on the outdoor unit is ON 30 minutes have past sin...

Page 110: ... or after error reset Lit when the inspection switch of the indoor unit is ON during inspection Extinguished when the switch is OFF during normal operation 3 Temperature Setting Range The temperature range can be set between 19 C 66 F 14 C 57 F and 30 C 86 F using the remote controller when the suction temperature control or the discharge temperature control is performed Depending on the operating...

Page 111: ... of the fol lowing situations When the demand for outdoor unit changes from Thermo ON to Thermo OFF When operation mode changes from normal to emergency mode When anti freeze mode is completed The outdoor unit has also a twenty second restart suspension mode and it works separately from the indoor unit 6 Anti Freeze Control In cooling mode 1 Starting Conditions This operation will start when all o...

Page 112: ...wer outage the following operations will be run Note 1 When indoor unit is in the maintenance mode it will not resume operation even after the power has been restored Note 2 After the unit resumes its operation MA remote controller will display HO for fifteen seconds during which timethe MA remote controller will not respond To turnoff the unit during this time turn off the power with an electric ...

Page 113: ...f protection function Error command to outdoor unit Indoor unit LEV fully closed Refer to 2 1 Cooling operation Refer to 2 2 Heating operation Refer to 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 Operation command to outdoor unit to Prohibition Blinking di...

Page 114: ...ccording to the operation mode selection signal from the indoor unit Start Breaker turned on Operation command Error stop Error display on the outdoor unit LED Error command to indoor unit Operation mode Operation mode Error mode 72C ON Note 1 Note 3 Note 2 YES YES YES YES NO NO NO NO HO blinks in the room temperature display window on the remote controller Operation command to indoor unit to Cool...

Page 115: ...troller Cooling operation Test run mode ON Thermostat ON 20 second restart prevention Note 1 Note 2 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 Indoo...

Page 116: ...and Adjusting Refrigerant Charge 2 6 3 1 Refrigerant Overcharge and undercharge 2 6 3 2 Checking the Refrigerant Charge during Operation 2 6 3 3 Refrigerant Charge Adjustment Mode 3 6 4 The Following Symptoms Are Normal 5 6 5 Initialization Procedure for System Rotation Settings 6 0000004496 BOOK 1 ページ２０１７年１２月２６日火曜日午前１１時４５分 ...

Page 117: ...GB_BS_06_C 0000004496 BOOK 2 ページ２０１７年１２月２６日火曜日午前１１時４５分 ...

Page 118: ...n extended period of time because of the accumulation of refrigerant in the compressor If insulation resistance is 1 MΩ or below 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 control...

Page 119: ...ng 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 3 2 Checking the Refrigerant Charge during Operation Operate all indoor units in cooling mode and check such items as discharge te...

Page 120: ... adequate TH3 TH6 on the outdoor unit is 5 C 41 F or above and SH on the indoor unit is between 5 and 15 C 41 and 59 F The refrigerant amount may seem adequate at the moment but may turn out to be inadequate later on TH3 TH6 on the outdoor unit is 5 C 41 F or less and SH on the indoor unit is 5 C 41 F or less Wait until the TH3 TH6 reaches 5 C 41 F or above and the SH of the indoor unit is between...

Page 121: ...ort 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 completed Gradually add refrigerant from the service p...

Page 122: ... display shown on the right appears on the in door unit remote controller for 5 minutes Ho blinks System is starting up Wait until HO goes off Sound of the refrigerant flow is heard from the indoor unit im mediately after starting opera tion Normal display This is caused by the transient instability of the refrigerant flow and is nor mal 0000004496 BOOK 5 ページ２０１７年１２月２６日火曜日午前１１時４５分 ...

Page 123: ... only 2 Setting 1 Make group setting after the setup sequence for all units have been completed 2 Turning DipSW5 10 from OFF to ON on the lowest address outdoor unit in the group while the unit is stopped 3 Change SW9 from Local to Normal after switching running stopping mode by MA remote controller 3 Test run 1 Run control unit only in test run mode and run other units in normal mode Rotate time ...

Page 124: ...mer Hr 1 SR Timer Hr Stoppage time of unit will show No 305 Stoppage time of unit will show 3 Units composing System rotation 1 SR Units Number of units Composing system rotation will show Min 2 Max 10 No 303 The addresses of units in the group are displayed one by one every second 4 Current status SR Stop 0 Running 1 Stopped under system rotation control Status changes after 1 cycle rotation fini...

Page 125: ...ing test run mode Using test run mode for the setting of system rotation is recommended because you can demonstrate the rotation in a short time 1 Before setting is started default value of SR Stop is 1 It depends on previous status 2 Turn DipSW 5 10 ON on control unit 51 then SR Backup unit and SR units changes 0000004496 BOOK 8 ページ２０１７年１２月２６日火曜日午前１１時４５分 ...

Page 126: ...hen run control unit IC1 in test run mode and switch SW9 to Normal on all the units 3 Switch SW9 to Local on all the units and run all units other than control unit IC1 via remote controller 4 Within 3 minutes backup unit will automatically stop 0000004496 BOOK 9 ページ２０１７年１２月２６日火曜日午前１１時４５分 ...

Page 127: ...6 Test Run 5 Rotation will be performed after 3 minutes SR Stop changes to 0 on backup unit and SR Timer Hr will start counting Then the system goes to normal operation with system rotation next rotation will be performed after 480hrs 0000004496 BOOK 10 ページ２０１７年１２月２６日火曜日午前１１時４５分 ...

Page 128: ...est run mode 1 Before setting is started default value of SR Stop is 1 It depends on the previous status Turn DipSW5 10 on control unit 51 then SR Backup unit and SR units changes 2 Switch SW9 to Local and run all units via remote controller then switch SW9 to Normal 0000004496 BOOK 11 ページ２０１７年１２月２６日火曜日午前１１時４５分 ...

Page 129: ...Within 3 mins backup unit will stop SR Timer Hr will start counting but SR Stop doesn t change at this time changes at next rotation timing Then the system goes to normal operation with system rotation next rotation will be performed after 480hrs 0000004496 BOOK 12 ページ２０１７年１２月２６日火曜日午前１１時４５分 ...

Page 130: ...ia remote controller 3 Shutdown power supply to the unit 4 Fix the error 5 Restore power supply to the unit 6 Run the unit via remote controller 7 Switch SW9 from Local to Normal then back up unit will automatically stop within 3 minutes 3 In case you would like to restore system rotation function after mistakenly manually operated despite switch SW9 is set as Normal 1 In case you would like to co...

Page 131: ... 6 5 Initialization Procedure for System Rotation Settings 14 chapter 6 BS_06_C 6 Test Run 0000004496 BOOK 14 ページ２０１７年１２月２６日火曜日午前１１時４５分 ...

Page 132: ...26 Detail Code 111 112 18 7 6 9 Error Code 4220 Detail Code 123 18 7 6 10 Error Code 4220 Detail Code 129 19 7 6 11 Error Codes 4220 4225 4226 Detail Code 131 19 7 6 12 Error Code 4230 Detail Code 125 20 7 6 13 Error Codes 4235 4236 Detail Code 125 21 7 6 14 Error Code 4230 Detail Code 126 21 7 6 15 Error Codes 4240 4245 4246 22 7 6 16 Error Codes 4250 4255 4256 Detail Code 101 23 7 6 17 Error Cod...

Page 133: ...dress System Controller 45 7 8 11 Error Code 6607 All Error Source Addresses 46 7 8 12 Error Code 6607 No Error Source Address 47 7 8 13 Error Code 6608 48 7 8 14 Error Code 6831 49 7 8 15 Error Code 6832 50 7 8 16 Error Code 6833 51 7 8 17 Error Code 6834 52 7 8 18 Error Code 6840 53 7 8 19 Error Code 6841 53 7 8 20 Error Code 6842 54 7 8 21 Error Code 6843 55 7 8 22 Error Code 6846 56 7 9 Error ...

Page 134: ...g O page 11 3512 3612 Locked cooling fan O page 12 4102 4152 Open phase O page 13 4106 Transmission power supply fault O page 14 4109 Fan error O page 14 4121 4171 Function setting error O page 15 4220 4225 4226 Note 4320 4325 4326 Note 0 Backup operation O 108 Abnormal bus voltage drop Software detection O page 16 109 Abnormal bus voltage rise Software detection O page 17 110 BUS voltage error Ha...

Page 135: ...O page 29 HIC bypass circuit outlet temperature TH2 O page 30 5103 1205 00 Temperature sensor fault Indoor unit gas side pipe temperature TH23 O page 29 Pipe temperature at heatex changer outlet TH3 O page 30 5104 1202 Temperature sensor fault Supply air temperature TH24 O page 29 Outdoor unit discharge tem perature TH4 O page 30 5105 1204 Temperature sensor fault Accumulator inlet tempera ture TH...

Page 136: ...r hardware error in indoor unit sys tem O O O page 40 6603 001 Transmission Bus Busy error in centralized control system O O O page 41 002 Transmission Bus Busy error in indoor unit system O O O page 41 6606 003 Communication error between device processor on circuit board and M NET processor O O O page 41 6607 No Ack error O O O page 42 6608 No response error O O O page 48 6831 MA controller sign...

Page 137: ...reception error O page 61 7111 Remote controller sensor fault O page 61 7113 Function setting error improper connection of CNTYP O page 62 7117 Model setting error O page 63 7130 Incompatible unit combination O page 64 Error Code Prelimi nary error code Error prelim inary detail code Error code definition Searched unit Notes Outdoor unit Indoor unit Remote controller The last digit Inverter system...

Page 138: ...emedy 1 Faulty wiring Check the following wiring connections 1 Between Control board and Fan board 2 Between control board and INV board 3 Between power supply board and INV board 2 PS board failure Replace the PS board if the LED on the INV board Fan board or control board is not lit 3 INV board failure Fan board failure and Control board failure If the problem persists after a power reset replac...

Page 139: ...e operation described in step 1 above will start 5 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 3 Evaluating and Adjusting Refrigerant Charge 2 Overload operation Check operating conditio...

Page 140: ...ediately 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 2 Low pressure sensor failure 3 Short circuited pressure sensor cable due to torn outer rubber 4 A pin on the male connector is missing 5 Dis...

Page 141: ...medy 1 Indoor unit LEV2 actuation failure Cooling Perform a cooling operation to check the operation Cooling Indoor unit LEV2 Refer to the following page s 8 8 Troubleshooting LEV Problems 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 t...

Page 142: ... formula ToilSH shell bottom SH 10 C 50 F is satisfied 30 minutes or more after the first stoppage of the outdoor unit the same sequence as Item 1 above first detection is followed 4 For 30 minutes after the stop of the outdoor unit preliminary errors will be displayed on the LED display 3 Cause check method and remedy Cause Check method and remedy 1 Inner pressure drop due to a leakage Refer to t...

Page 143: ...ed 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 restart the operation and check for proper operation 2 Broken or partially broken float switch wire 2 Check for broken float switch wire 3 Float switch failure 3 Check the resistance of the float switch 250 mΩ below 4 Indoor unit control...

Page 144: ...es has been met the unit will come to an abnormal stop and this error will be indicated as 3511 4 If the condition THHS A 1 C remains true for continuous 6 minutes and 30 seconds is met regardless of the first or second time after 30 minutes of the first occurrence or after the condition THHS A 1 C remains true for continuous 2 minutes has been met it is considered as the first occurrence and the ...

Page 145: ...oling fan 2 Cooling fan motor trouble Disconnect the wiring from the cooling fan motor and check the insulation resistance and the coil resistance of the motor Replace the motor if problems are found Criteria for insulation failure Insulation failure if below 1 MΩ Wire disconnection Normal if coil resistance is between 56 and 65 Ω 3 Contact failure Check the wiring between CN101 and CN63PW Check t...

Page 146: ... method and remedy 1 Power supply problem Open phase voltage of the power supply Power supply voltage drop Check the input voltage to the power supply terminal block TB1 2 Noise filter problem Coil problem Circuit board failure Check the coil connections Check for coil burnout 3 Wiring failure Check the wiring between CN5 on the noise filter and CNAC on the control board Check the wiring between C...

Page 147: ... on all outdoor units in a given refrigerant circuit for problems 8 10 2 Trouble shooting Problems with Outdoor Unit Transmission Power Supply Circuit 7 6 3 Error Code 4109 1 Error code definition Indoor unit fan fault 2 Error definition and error detection method If the auxiliary relay X4 for fan fault detection remains unexcited for a certain period of time the unit will come to an abnormal stop...

Page 148: ...medy Error source Cause Check method and remedy Outdoor unit 1 Dip switch setting error on the control board Check the SW6 1 setting on the control board 2 Connector connection error on the control board Check that nothing is connected to the connector CNAF on the control board 3 Control board failure Replace the control board if no problems are found with the two items above 0000004497 BOOK 15 ペー...

Page 149: ...r to see if the bus voltage is above 289 V and replace the inverter board if it is 289 V or below 2 Check the coil L connections and for broken wiring 3 Check the wiring connections between noise filter board and INV board and between INV board and capacitor board 4 If the problem persists after reboot replace the INV board If the voltage is below 420 V check the following items 1 Check the coil L...

Page 150: ...e the INV board or fan board In the case of 4220 INV board In the case of 4225 and 4226 Fan board For inverter related error codes refer to the following page s 8 9 Troubleshooting Inverter Problems 7 6 7 Error Code 4220 Detail Code 110 1 Error code definition VDC error Detail code 110 2 Error definition and error detection method BUS voltage error When Vdc is equal to or greater than 814 volts ha...

Page 151: ...ated error codes refer to the following page s 8 9 Troubleshooting Inverter Problems Cause Check method and remedy 1 External noise Refer to the following page s 8 9 2 Checking the Inverter Board Error Detection Circuit 2 INV board failure Cause Check method and remedy 1 External noise Refer to the following page s 8 9 8 Checking the Fan Board Error Detection Circuit at No Load 8 9 9 Checking the ...

Page 152: ...tion method When Vdc 289 V is detected just before the inverter operation 3 Cause check method and remedy 1 Inverter main circuit failure Same as detail code 108 of 4220 error For inverter related error codes refer to the following page s 8 9 Troubleshooting Inverter Problems Cause Check method and remedy 1 Contact failure INV35Y and INV36Y Check the connectors CNRY on INV board and CNRYA on MAIN ...

Page 153: ... to the following page s 8 9 8 Checking the Fan Board Error Detection Circuit at No Load 8 9 9 Checking the Fan Board for Damage at No Load 8 9 10 Checking the Fan Board for Damage with Load 2 THHS failure 1 Check for proper installation of the INV board and FAN board IGBT Check for proper installation of the IGBT heatsink 2 Check the THHS sensor reading on the LED monitor If an abnormal value app...

Page 154: ...rcuit at No Load 8 9 9 Checking the Fan Board for Damage at No Load 8 9 10 Checking the Fan Board for Damage with Load 2 Outdoor unit fan failure 1 Check the outdoor unit fan for proper operation Check the fan motor if problems are found with the operation of the fan Refer to the following page s 8 9 7 Checking the Fan Motor for Ground Fault and Coil Resistance Problems 3 Air passage blockage 1 Ch...

Page 155: ... Remove the inverter board and check the IPM heatsink grease 2 Air passage blockage Check that the heat sink cooling air passage is not blocked 3 Power supply environment Power supply voltage is 342 V or above 4 Inverter FAN board failure Refer to the following page s 8 9 Troubleshooting Inverter Problems 5 Compressor failure Check that the compressor has not overheated during operation Check the ...

Page 156: ... and Coil Resistance Problems 8 9 4 Checking the Inverter for Damage at No Load 8 9 5 Checking the Inverter for Damage during Compressor Operation 8 9 11 Checking the Installation Conditions Check the IGBT module resistance value of the INV board if no problems are found 8 9 15 Troubleshooting Problems with IGBT Module 2 The model selection switches SW5 3 5 8 on the outdoor unit are set incorrectl...

Page 157: ...s 8 9 3 Checking the Compressor for Ground Fault and Coil Resistance Problems 2 Inverter output related Refer to the following page s 8 9 2 Checking the Inverter Board Error Detection Circuit 8 9 3 Checking the Compressor for Ground Fault and Coil Resistance Problems 8 9 4 Checking the Inverter for Damage at No Load 8 9 5 Checking the Inverter for Damage during Compressor Operation 8 9 11 Checking...

Page 158: ...remedy 1 Short circuited compressor Refer to the following page s 8 9 3 Checking the Compressor for Ground Fault and Coil Resistance Problems 2 Output wiring Check for a short circuit Cause Check method and remedy 1 Short circuited fan motor Refer to the following page s 8 9 7 Checking the Fan Motor for Ground Fault and Coil Resistance Problems 2 Output wiring Check for a short circuit Cause Check...

Page 159: ...amage with Load 2 Outdoor unit fan failure Check the outdoor unit fan for proper operation Check the fan motor if problems are found with the operation of the fan Refer to the following page s 8 9 7 Checking the Fan Motor for Ground Fault and Coil Resistance Problems 3 Air passage blockage Check that the heat sink cooling air passage is not blocked 4 The model selection switches SW5 3 5 8 on the o...

Page 160: ...page s 8 9 Troubleshooting Inverter Problems Cause Check method and remedy 1 Inverter output related items Refer to the following page s 8 9 2 Checking the Inverter Board Error Detection Circuit Refer to the following page s 8 9 3 Checking the Compressor for Ground Fault and Coil Resistance Problems Refer to the following page s 8 9 4 Checking the Inverter for Damage at No Load Refer to the follow...

Page 161: ...r code definition Heatsink overheat protection at startup 2 Error definition and error detection method When heatsink temperature THHS remains at or above TOH for 10 minutes or longer after inverter startup 3 Cause check method and remedy Same as 4230 error models TOH INV35Y 36Y 100 C INV37YC 94 C 0000004497 BOOK 28 ページ２０１７年１２月２６日火曜日午前１１時４６分 ...

Page 162: ...or is not restored after 20 seconds if restored the outdoor unit runs normally the outdoor unit makes an error stop Short detectable at 90 C 194 F or higher Open detectable at 40 C 40 F or lower Sensor error at gas side cannot be detected under the following conditions During cooling operation for 3 minutes after the compressor turns on 3 Cause check method and remedy Cause Check method and remedy...

Page 163: ...d the first detection the outdoor unit stops turns to anti restart mode for 20 seconds and restarts when the detected temperature of the thermistor When a short or an open is detected again the second detection after the first restart of the outdoor unit the outdoor unit stops turns to anti restart mode for 20 seconds and restarts in 20 seconds when the detected temperature is within the nor mal r...

Page 164: ...connector is missing or contact failure Check connector 5 Disconnected wire Check for wire 6 Thermistor input circuit failure on the control board Check the intake temperature of the sensor with the LED monitor When the temperature is far different from the actual temper ature replace the control board Short detection Open detection TH2 70 C 158 F and above 0 4kΩ 40 C 40 F and below 130kΩ TH3 110 ...

Page 165: ...detects 0 098MPa 14psi or less just before the restart the outdoor unit makes an error stop and the error code 5201 will appear During 20 second antirestart mode preliminary errors will be displayed on the LED display A error is not detected for 3 minutes after the compressor start 3 Cause check method and remedy Cause Check method and remedy 1 Contact failure Check the connector CNTH on the inver...

Page 166: ...es refer to the following page s 8 9 Troubleshooting Inverter Problems Cause Check method and remedy 1 Contact failure Check the connector CNCT2 on the INV board for proper connection 2 INV output phase loss Check the output wire for proper connection 3 ACCT sensor failure Refer to the following page s 8 9 14 Simple Check on Inverter Circuit Components 4 Compressor failure Refer to the following p...

Page 167: ...ACCT sensor disconnection Check the connector CNCT2 on the INV board for proper connection Check the ACCT for proper connection 2 ACCT sensor failure Refer to the following page s 8 9 14 Simple Check on Inverter Circuit Components 3 Inverter failure Refer to the following page s 8 9 4 Checking the Inverter for Damage at No Load 8 9 5 Checking the Inverter for Damage during Compressor Opera tion 4 ...

Page 168: ...while fan motor is in operation 3 Cause check method and remedy For inverter related error codes refer to the following page s 8 9 Troubleshooting Inverter Problems Cause Check method and remedy 1 Contact failure Check the wiring between CNCT1A and CNCT1B 2 Incorrect installation Check the wiring on the SC L terminal 3 INV board failure If the problem persists after restart operation replace the i...

Page 169: ...l value by the current detection circuit before the startup of fan motor 3 Cause check method and remedy For inverter related error codes refer to the following page s 8 9 Troubleshooting Inverter Problems Cause Check method and remedy 1 Fan board fault Refer to the following page s 8 9 8 Checking the Fan Board Error Detection Circuit at No Load 8 9 9 Checking the Fan Board for Damage at No Load 8...

Page 170: ... 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 8 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 properl...

Page 171: ...wo or more of the following have the same address Outdoor units indoor units LOSSNAY units control lers such as ME remote controllers Example 6600 01 appears on the remote controller Unit 01 detected the error Two or more units in the system have 01 as their ad dress Find the unit that has the same address as that of the error source Once the unit is found correct the address Then turn off the out...

Page 172: ...trol system Detail code 002 Detection of polarity setting error in indoor unit system 3 Cause check method and remedy Cause Check method and remedy 1 No voltage is applied to the M NET transmission line that AG 150A GB 50ADA PAC YG50ECA BAC HD150 are connected to Check if power is supplied to the M NET transmission line of the AG 150A GB 50ADA PAC YG50ECA BAC HD150 and correct any problem found 2 ...

Page 173: ...ssion line 7 Voltage is not applied on the transmission line for centralized 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 perfo...

Page 174: ...ansmission processor or M NET processor Detail code 003 Communication error between device processor on circuit board and M NET processor 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 vol...

Page 175: ...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 vol...

Page 176: ...ouped operation of multi ple 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 experiencing problems All indoor units IC are experiencing problems Troubleshooting prob lems for indoor units A Troubleshooting problems for indoor units A Troubleshooting prob lems for indoor units A Troubles...

Page 177: ...le power supply switch connector CN40 for the transmission line for centralized control 1 Check voltage of the transmission line for central ized control 20 V or more Check 1 on the left Less than 20 V Check 2 on the left 2 Disconnection or shutdown of the power source of the power supply unit for transmission line 3 System controller MELANS malfunction 2 Check the causes of the error indicated by...

Page 178: ... 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 Troublesh...

Page 179: ...o 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 connected units 7102 Address s...

Page 180: ...ndoor 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 contro...

Page 181: ...n 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 outdoor unit indo...

Page 182: ...s 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 183: ...or disconnected or loose transmission lines for the indoor units or MA remote controllers 2 Confirm that the power is supplied to the main power source and the remote controller line 3 Confirm that MA remote controller s capacity limit is not exceeded 4 Check the sub main setting of the MA remote controllers One of them must be set to MAIN 5 Diagnose the remote controller described in the remote c...

Page 184: ...nnected 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 controlle...

Page 185: ...nals 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...

Page 186: ...iring 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 check If abnormality generates again replace ind...

Page 187: ...ion 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 Noise has entered into pow...

Page 188: ...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 other indoor controller board may have defect 3 Defective transmitting receiving circu...

Page 189: ...r length of indoor outdoor unit connecting wire is out of specified capacity Check the following Diameter of the cables used for indoor outdoor lines maximum line distance between indoor and outdoor units max 50 m maximum line distance be tween indoor units daisy changed cables max 30 m and if flat cables such as VVF is used make sure they are connected in the order of S1 S2 and S3 3 2 or more out...

Page 190: ...onnected 2 Check the Qj setting capacity code of the connected indoor unit set by the switch SW2 on indoor unit board When the model name set by the switch is dif ferent from that of the unit connected turn off the power source of the outdoor and the indoor units and change the setting of the Qj capac ity code 2 The model selection switches SW5 3 5 8 on the outdoor unit are set incorrectly Check t...

Page 191: ...of the in door unit which has the error source address set by the switch SW2 on indoor unit board 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 capacity code The capacity of the indoor unit can be con firmed by the self diagnosis function SW1 operation of the outdoor un...

Page 192: ...isconnected transmission line of the outdoor unit 2 Check 2 3 on the left 3 Short circuited transmission line When 2 and 3 apply the 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 MA remote controller HO or PLEASE WAIT blinks 4 The model sele...

Page 193: ...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 the OA processing uni...

Page 194: ...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 Reset the power to the outdoor unit 3 Wiring failure between OC and OS 2 Confirm that the TB3 on the OC and OS are properly connected 4 Broken ...

Page 195: ...TYP2 on the control board for proper con nection 2 Check the connector CNTYP5 on the control board for proper con nection 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 connec tion 2 Check the connector CNTYP5 on the control board for proper con nection 3 Check the settings of SW5 3 through SW5 6 on the contro...

Page 196: ...e control board for proper connection Detail code 16 1 Check the connector CNTYP on the INV board for proper connection 2 Check the connector CNTYP5 on the control board for proper connection 3 Check the wiring between the control board and INV board Refer to the following page s 7 2 1 Error Code 0403 Detail code 0 1 5 6 1 Check the wiring between the control board and INV board Refer to the follo...

Page 197: ...heck 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 Check the connected indoor unit model Check whether the connecting ada...

Page 198: ...ctions 23 8 9 Troubleshooting Inverter Problems 25 8 9 1 Inverter Related Problems and Solutions 25 8 9 2 Checking the Inverter Board Error Detection Circuit 27 8 9 3 Checking the Compressor for Ground Fault and Coil Resistance Problems 27 8 9 4 Checking the Inverter for Damage at No Load 28 8 9 5 Checking the Inverter for Damage during Compressor Operation 29 8 9 6 Checking the Converter for Dama...

Page 199: ...aintenance Procedure for the Drain Pan 61 8 12 7 Maintenance Procedures for the Heat Exchanger 63 8 12 8 Accumulator Replacement Procedure 68 8 13 Troubleshooting Problems Using the LED Status Indicators on the Outdoor Unit 70 8 14 Replacement Instructions for Motor and Bearing Indoor Unit 71 8 15 Maintenance Inspection Schedule 77 0000004498 BOOK 2 ページ２０１８年１月５日金曜日午前１０時３８分 ...

Page 200: ...able 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 ...

Page 201: ...ors 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 side 5 Disconnected wire between the terminal blo...

Page 202: ...ed 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 controller to the terminal block for transmission line connection TB5 on the indoor unit The M NET transmission...

Page 203: ...2 is lit All the indoor unit power failure All the indoor unit power failure Error display Error display Thermo is OFF Is operation possible Short circuit of the remote controller After turning the power on check whether HO PLEASE WAIT is displayed on the remote controller After more than 20 seconds since turning the power on is LED2 check of the indoor control board still displayed Is the operati...

Page 204: ...tual pressure causes insufficient capacity SW4 setting SW6 10 OFF 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 Note Protection works and compressor frequency does not rise even at higher Te than Tem due to high discharge temperatu...

Page 205: ...ont of and behind the place where the foreign object is clogging the pipe upstream side and downstream side When the temperature drops significantly the foreign object may clog the pipe Remove the foreign object inside the pipe 8 The indoor unit inlet temperature is excessively Less than 15 C 59 F WB Check the inlet air temperature and for short cy cling Change the environment where the indoor uni...

Page 206: ...ith SW4 2 Abnormal discharge air temperature 3 Heatsink thermistor failure Refer to the reference page for each error mode Display the indoor piping temperature table with SW4 to check whether the freeze proof operation runs properly and check the temperature 4 Thermistor failure 5 Pressure sensor failure Refer to the following page s 10 LED Status Indi cators on the Outdoor Unit Circuit Board 6 O...

Page 207: ...nal is set to other than pulse Repair the external wiring Disconnected wire or contact failure Replace the controller circuit board Go to the page that describes the occurred error Input the signal with pulse signal or with level signal with the DipSW 1 9 OFF Select Normal Make the DipSW settings as specified NO NO NO NO NO YES YES YES YES Possible to start and stop CN51 between 1 and 2 on the con...

Page 208: ...eld 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...

Page 209: ... 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 power sup ply unit The e...

Page 210: ...ion 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 c...

Page 211: ...diagnosis LED1 while the sen sor is running Compare them by MPa psi unit 1 When the difference between both pressures is within 0 098MPa 14psi both the high pressure sensor and the control board are normal 2 When the difference between both pressures exceeds 0 098MPa 14psi the high pressure sensor has a problem perfor mance deterioration 3 When the pressure displayed on self diagnosis LED1 does no...

Page 212: ...oltage will be converted by the microcomputer The output voltage is 0 071V per 0 098MPa 14psi The pressure sensor on the body side is designed to connect to the connector The connector pin number on the body side is different from that on the control board side Body side Control board side Vcc Pin 1 Pin 3 Vout Pin 2 Pin 2 GND Pin 3 Pin 1 0 0 5 73 1 0 145 1 5 218 2 0 290 2 5 363 3 0 435 3 5 508 4 0...

Page 213: ...as a problem performance dete rioration 3 When the pressure displayed on the self diagnosis LED1 does not change the low pressure sensor has a problem 3 Remove the low pressure sensor from the control board to check the pressure with the self diagnosis LED1 display 1 When the pressure displayed on the self diagnosis LED1 is between 0 and 0 098MPa 14psi the low pressure sensor has a problem 2 When ...

Page 214: ...oltage will be converted by the microcomputer The output voltage is 0 173V per 0 098MPa 14psi The pressure sensor on the body side is designed to connect to the connector The connector pin number on the body side is different from that on the control board side Body side Control board side Vcc Pin 1 Pin 3 Vout Pin 2 Pin 2 GND Pin 3 Pin 1 0 0 2 29 0 4 58 0 6 87 0 8 116 1 0 145 1 2 174 1 4 203 1 6 2...

Page 215: ...r 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 21S4b 4 way switching valve About this 4 way valve When not powered Conducts electricity between the oil ...

Page 216: ...ore temperature of the downstream piping will not be low with the valve closed 4 SV2 solenoid valve This solenoid valve is a switching valve that opens when energized Proper operation of this valve can be checked on the LED and by the switching sound 5 SV9 Solenoid valve This solenoid valve is a switching valve that opens when energized Proper operation of this valve can be checked on the LED disp...

Page 217: ...or unit operation capacity 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 When checking the fan motor for problems by shutting down the power be sure to disconnect the motor wire from the fan board If a short circuited fan board malfunctions it will keep the fan motor from rotating smoothly For details refer t...

Page 218: ...ndoor 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 Brow...

Page 219: ...rcuit 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 sound occurs Whether a ...

Page 220: ...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 Upon power on the indoor unit circuit board sends a 520 pulse signal to the indoor unit LEV to determine the valve position and always brings the valve to the position as indicated by A in ...

Page 221: ...ndoor Measure the resistance between coils red white red orange red yellow red blue with a tester When the resistance is in the range of 100Ω 10 the LEV is normal Replace the LEV coils Outdoor LEV2a LEV2b Measure the resistance between coils red white red orange brown yellow brown blue with a tester When the resistance is in the range of 46Ω 3 the LEV is normal Replace the LEV coils Outdoor LEV1 L...

Page 222: ... coils toward the top If the coils are 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 If the coils are pushed without the body gripped undue force will...

Page 223: ... 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 the coil hold the LEV body securely ...

Page 224: ...y connectors of the outdoor unit fan RYFAN1 and RYFAN2 Before plugging in or unplugging connectors check that the outdoor unit fan is not rotating and that the voltage across Pin 1 and Pin 5 of connector RYPN is 20 VDC or less 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 3 Reconnect th...

Page 225: ...es an abnormal sound Check the inverter frequency on the LED monitor If the frequency indi cates that the units are in operation refer to the following page s 8 9 8 Checking the Fan Board Error Detection Circuit at No Load 8 9 9 Checking the Fan Board for Damage at No Load 8 9 10 Checking the Fan Board for Damage with Load 9 Noise is picked up by the peripheral device 1 Check that power supply wir...

Page 226: ...round Fault and Coil Resistance Problems Items to be checked Phenomena Remedy 1 Stop the unit Remove power supply 1 Overcurrent error Error code 4250 Detail code No 101 104 105 106 and 107 Replace the INV board 2 Disconnect the inverter output wires from the compressor terminals U V W 1 2 Logic error Error code 4220 Detail code No 111 Replace the INV board 3 Apply power supply 3 ACCT sensor circui...

Page 227: ... of Refrigerant Circuit Parts for how to move the MAIN BOX Items to be checked Phenomena Remedy 1 Stop the unit Remove power supply 1 Inverter related problems are detected Set SW7 1 on the MAIN board to ON and go to 8 9 2 Checking the Inverter Board Error Detection Circuit 2 Disconnect the inverter output wires from the compressor terminals U V W 1 2 Inverter voltage is not output at the termi na...

Page 228: ...ures are balanced c Check that no liquid refrigerant is present in the compressor and that there is no liquid backflow Go to d when the problem per sists after compressor startup was repeated several times d Check that there is a pressure dif ference between high and low pressures after compressor start up Check the high pressure with LED monitor for changes Replace the compressor if there is no p...

Page 229: ...there is a pressure dif ference between high and low pressures after compressor start up Check the high pressure with LED monitor for changes Replace the compressor if there is no pressure difference the com pressor may be locked c Check for interphase voltage im balance d Replace the INV board if no prob lems were found with the items a or c e If the problem persists after replac ing the inverter...

Page 230: ...r board replace the DCL 3 An overvoltage error occurs after converter circuit goes into opera tion Error code 4220 Detail code 109 110 112 a If the problem persists after startup re place the inverter board b If the problem persists after replacing the inverter board replace the DCL 4 No problems were found with items 1 through 3 Normal Items to be checked Phenomena Remedy Remove fan motor winding...

Page 231: ... synchronization loss or electrical current overload during operation Check code 4255 4256 Detail code 101 106 107 137 a Check for gusts or windy conditions b Go to 8 9 8 Checking the Fan Board Error Detection Circuit at No Load if not windy c After checking 8 9 9 Checking the Fan Board for Damage at No Load and there is no problem change Fan board d If replacing Fan board doesn t re solve issue c...

Page 232: ...between the terminals on the power terminal block TB1 Zero to several ohm or Meg failure Check each part and wiring Refer to the following page s 8 9 14 Sim ple Check on Inverter Circuit Components 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 a...

Page 233: ... earth leakage breaker 2 Check the resistance at the power supply terminal block TB1 with a megger Failure resistance value Check each part and wiring Refer to the following page s 8 9 14 Sim ple Check on Inverter Circuit Components IGBT module Rush current protection resistor Electromagnetic relay DC reactor 3 Disconnect the compressor wir ings and check the resistance of the compressor with a me...

Page 234: ...cal power source is 1 5V or greater Use the dry battery powered tester The accurate diode specific resistance cannot be measured with the button battery powered card tester as the applied volt age is low Use a low range tester if possible A more accurate resistance can be measured Part name Judgment method IGBT module Refer to the following page s 8 9 15 Troubleshooting Problems with IGBT Module R...

Page 235: ...ference resistance value Black SC PL CN N SC L1 SC L2 SC L3 Red SC PL 5 200 Ω 5 200 Ω 5 200 Ω CN N SC L1 5 200 Ω SC L2 5 200 Ω SC L3 5 200 Ω Black SC P1L CN N SC U SC V SC W Red SC P1L 5 200 Ω 5 200 Ω 5 200 Ω CN N SC U 5 200 Ω SC V 5 200 Ω SC W 5 200 Ω CN N SC L3 SC L2 SC L1 SC U SC V SC W SC PL 0000004498 BOOK 36 ページ２０１８年１月５日金曜日午前１０時３８分 ...

Page 236: ...nce resistance value Black SC PL SC N SC L1 SC L2 SC L3L Red SC PL 5 200 Ω 5 200 Ω 5 200 Ω SC N SC L1 5 200 Ω SC L2 5 200 Ω SC L3 5 200 Ω Black SC P1L SC N SC U SC V SC W Red SC P1L 5 200 Ω 5 200 Ω 5 200 Ω SC N SC U 5 200 Ω SC V 5 200 Ω SC W 5 200 Ω SC N SC L1 SC PL SC L2 SC L3 SC U SC V SC W SC P1L 0000004498 BOOK 37 ページ２０１８年１月５日金曜日午前１０時３８分 ...

Page 237: ... value Black SC L1 SC L2 SC L3 SC B SC L FT100 CN N Red SC L1 5 200 Ω SC L2 5 200 Ω SC L3 5 200 Ω SC B SC L 5 200 Ω 5 200 Ω 5 200 Ω FT100 5 200 Ω CN N Black FT100 CN N SC U SC V SC W Red FT100 5 200 Ω 5 200 Ω 5 200 Ω CN N SC U 5 200 Ω SC V 5 200 Ω SC W 5 200 Ω SC W SC V SC U SC L FT100 CN N SC B SC L3 SC L2 SC L1 0000004498 BOOK 38 ページ２０１８年１月５日金曜日午前１０時３８分 ...

Page 238: ...ponents in the reverse order as they were removed 1 Remove the front service panel P250 Service panel Main control box Inverter box Remove the two screws holding the top section of the duct Top section of the duct 3 Remove the upper section of the duct by unscrewing the screws on the control box on the inverter box on the P250 model shown in the figure below Check inside the duct for clogging and ...

Page 239: ...on block 24 30 VDC TB3 CN40 TB1 AC Power source 380 V 415 V Power supply terminal block Inverter board Rectifier Rectifier 72C DCL 5 V power supply Smoothing capacitor Inverter Microcomputer Inverter drive circuit Compressor Noise filter Fuse Fuse Surge protector Solenoid valve Four way valve Control board Fuse Microcomputer FAN board Fuse Heat exchanger fan Microcomputer 5Vpowersupply Transmissio...

Page 240: ... line from TB3 Check whether the male connector is connected to the female power supply connector CN40 Connected Check voltage of terminal block for centralized control TB7 Check voltage of TB7 by removing transmission line from TB7 Check the voltage across pins 3 and 4 of CNPW on the control board Check the voltage across pins 1 and 2 of CNPW on the control board Check the voltage across pins 1 a...

Page 241: ...board YES NO Any problems with wiring or loose connectors Correct wiring problems and tighten loose connectors Replace the power supply board Check the wiring between the noise filter board and TB1 of power supply board and also check connectors L2 N of TB1 TB12 and TB14 for proper connections Check for conductivity between TB12 and pin 1 of CN1 and between TB14 and pin 3 of CN1 Check the voltage ...

Page 242: ...trol 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 more See the item 3 10 2 W...

Page 243: ...ed after 4 on the previous page the indoor unit lev turns from fully closed to slightly open to prevent the refrigerant seal LEV2 open when the outdoor unit remains stopped for 15 minutes to allow for the collection of refrigerant in the outdoor unit heat exchanger and to enable the evacuation of the outdoor unit heat exchanger If the power is turned of in less than 5 minutes LEV2 may close trappi...

Page 244: ...e and then fix the drain pan cover in place with a cable tie Figures 2 and 3 show the cable ties to be cut 3 Remove the drain pan by unscrewing the two screws See Figure 2 Be sure to remove the two rod holders holding the check joints to the drain pan See Figure 3 4 Remove the top attachment connecting the main control box and the inverter control box by unscrewing the two screws See Figure 4 5 Re...

Page 245: ...hat no undue force is applied to the wires from which cable straps were removed in steps 7 through 12 Position the bottom attachment that was removed in step 5 above on the fin guard as shown in Figure 13 and then hook the main control box on the attachment as shown in Figure 12 15 Place the excess weak and strong electrical wirings in the space at the base legs as shown in Figure 14 to keep them ...

Page 246: ...eave no space between the rubber bushes and the wires Fix the wires in place to leave no space between the notches on the rubber bushes and the wires Fix the wires in place with cable straps HIGH VOLTAGE WIRE MAIN INV CONNECTION WIRING HIGH VOLTAGE Fix the wires in place with cable straps SENSOR WIRE TH2 TH4 TH5 TH7 TH15 63LS 63HS Fix the wires in place with cable straps SENSOR WIRE LEV WIRE Fix e...

Page 247: ...ge saddle MAIN INV CONNECTION WIRING LOW VOLTAGE Thread the wires through the edge saddle MAIN INV CONNECTION WIRING HIGH VOLTAGE Thread the wires through the edge saddle FAN MOTOR WIRE HIGH VOLTAGE Bundle excess wiring and fix it in place with a cable tie Wrap the cable tie two turns HIGH VOLTAGE WIRE Thread the wire through the rubber bush COMP WIRE HIGH VOLTAGE Thread the wire through the rubbe...

Page 248: ...Remove the top compressor cover by unscrewing the three screws See Figure 1 Remove the compressor cover by unhooking the hooks on the back 2 Remove the front compressor cover by unscrewing the four screws See Figure 2 3 Cut the two cable ties holding TH4 and TH15 and remove the wiring from the rubber bush on the left compressor cover See Figure 3 4 Remove the left compressor cover by unscrewing th...

Page 249: ...the removed pipes for later use 7 Remove the plastic cover and the coil holding the four way valve See Figure 7 Figure 7 Four way valve coil A Four way valve coil B Notes on replacing refrigerant circuit components check valve four way valve solenoid valve and LEV Be sure to perform non oxidized brazing Before heating the pipes wrap the refrigerant circuit components with a wet towel to keep the t...

Page 250: ... the four way valve The replacement parts for this part is included with the replacement kit that contains four way valve 21S4a Replace the old cap with the one included with the four way valve 13A Remove the pipe below four way valve 21S4a and on the back by removing the braze at the two areas on the bottom of the pipe shown in Figure 13 Then remove the braze at the areas on the top of the pipe 1...

Page 251: ...the area indicated in 16A and the areas indicated in Figure 17 Figure 17 Front view 90 Cut the pipe here Severed pipe Pipe diameter φ19 05 ID of the pipe with an extended end φ19 05 Figure 16 Cut the pipe with an expanded end that is included with four way valve 21S4a so that the section of the pipe excluding the extended end will be the same length as the pipe that was removed from the on site pi...

Page 252: ...valve 21S4a to the pipe below four way valve 21S4a and on the front by brazing at the four areas See Figure 19 This step completes the replacement procedure for four way valve 21S4a Re place the solenoid valve and LEV assembly that were removed in step 8 and all the pipe covers that were removed during the maintenance work as they were Figure 18 Reinstall these pipes Re place the rubber spacer Fig...

Page 253: ...ocedure for replacing four way valve 21S4b on the left when seen from the front of the unit Secure sufficient work space before starting maintenance work See 8 12 1 Ensuring Maintenance Space Preparation for the Maintenance of Refrigerant Circuit Parts Remove the rubber spacer Figure 20 Figure 21 Figure 22 Severed pipe Pipe diameter φ12 7 ID of the pipe with an extended end φ12 7 Cut the pipe here...

Page 254: ...lve and LEV assembly that were removed in step 8 and all the pipe covers that were removed during the maintenance work as they were 24B Mount four way valve 21S4b to the pipe below four way valve 21S4b and in the middle A total of five areas require brazing including the area indicated in 23B and the areas indicated in Figure 23 Mount four way valve 21S4b horizontal to four way valve 21S4a as show...

Page 255: ...ck valve CV1 located in the back of the four way valve 1 Follow the steps 1 through 9A under item 1 S module under 8 12 3 Four way Valve and Check Valve Replacement Procedure to Create Access to Check Valve CV1 2 Remove the braze from two areas on check valve CV1 The above step completes the check valve CV1 replacement procedure Re place the solenoid valve LEV assemby and pipe cover that were remo...

Page 256: ...re 3 4 Remove the right and left compressor covers by unscrewing the four screws See Figure 4 5 Remove the thermal insulation See Figure 5 6 Remove the duct by unscrewing the two screws See Figure 6 Applicable to the S module only 7 Remove the pipe cover and the damper and cut the suction pipe where indicated in Figure 7 8 Remove the compressor discharge pipe by cutting the pipe where indicated in...

Page 257: ...ompressor cover and damper with a fire protection panel e g recommended felt soaked in water and perform brazing See Figure 10 Perform brazing referring to Notes on replacing refrigerant circuit components check valve four way valve solenoid valve and LEV in 8 12 3 12 The recommended tightening torque for the compressor fixing bolts is 3 0 N m 13 Re place the compressor covers in the reverse order...

Page 258: ...igure 4 a and pull the DCL the right side panel and the top panel forward toward the front of the unit Then lift the back end of the top panel and then pull the terminal board the DCL and the top panel Noise Filter board forward toward the front of the unit all together to remove them as one unit Figure 4 b Figure 1 Figure 2 Figure 2 a Figure 2 b Figure 3 a Figure 4 a Figure 4 b Figure 3 b Figure ...

Page 259: ...is done check that the brazing is done properly and check for leaks before vacuum drying the pipes Direct the brazing torch flame away from the wiring and sheet metals inside the unit not to damage them Wet felt sheets listed below or its equivalent and place them around the areas to be brazed to protect the heat exchanger pipes and pipe covers from being damaged from the brazing torch flame Recom...

Page 260: ...ve the two rod holders holding the check joints in place using a wrench See Figure 4 4 Remove the drain pan by unscrewing the two screws See Figure 5 5 Clean the drain pan and the drain pan cover See Figure 6 Remove dust and dirt from the drain groove Drain pan cover Drain pan cable tie Screw Pull out toward the right Check joint Rod holders Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Fr...

Page 261: ...d fit it to the drain pan See Figures 9 and 10 4 Thread a cable tie through the rectangle hole on the screwed down drain cover and hold the silicon tube and the defrost pipe together in place See Figure 11 5 Screw down the front panel with eight screws See Figure 12 Drain pan Check joint Rod holders Silicon tube Defrost pipe Defrost pipe cable tie Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Fig...

Page 262: ...a cable tie 4 Remove the drain pan by unscrewing the 2 screws See Figure 2 Be sure to remove the two rod holders holding the check joints to the drain pan See Figure 4 5 Remove the top attachment that connects the main control box to the inverter control box by unscrewing the 2 screws See Figure 5 6 Remove the cover from the inverter control box by unscrewing the 3 screws See Figure 5 7 Remove the...

Page 263: ...e 9 12 Disconnect the TH7 sensor holder from the front pillar See Figure 9 Rear 13 Remove the TH7 wiring from the front heat exchanger by cutting the cable tie See Figure 10 Motor ASSY Fan Figure 8 Rear Front pillar TH7 Connector Front pillar Front heat exchanger Main control box Front heat exchanger Fan guard Figure 7 Spacer Spacer Spacer Figure 9 Figure 10 TH7 Cable tie Use the supplied spacers ...

Page 264: ...llar by unscrewing the 9 screws on a standard model or 10 screws on a high efficiency model See Figure 12 Front and Left 17 Remove the right front pillar by unscrewing the 5 screws See Figure 12 Front and Right Use the supplied spacers Use the spacers 60 D X 250 W X 60 H when replacing the heat exchangers for the maintenance of the accumulator and the pipes Right frame Front frame Left frame Left ...

Page 265: ...he back of the right rear pillar 3 screws on a standard model or 2 screws on a high efficiency model See Figure 16 Remove the screw holding the pillar to the rear heat exchanger support See Figure 16 Remove the braze from the areas encircled in the figure Remove the braze from the areas encircled in the figure Loosen the screws Unscrew the screws Connection of the pillar to the front heat exchange...

Page 266: ...ure 19 Figure 20 Rear heat exchanger support Removing the front heat exchanger Figure 17 Removing the rear heat exchanger Figure 18 Notes for replacing refrigerant circuit components heat exchanger Be sure to perform non oxidized brazing After brazing is done check that the brazing is done properly and check for leaks before vacuum drying the pipes Direct the brazing torch flame away from the wiri...

Page 267: ... the right and inside right compressor panels by unscrewing the four screws Applicable only to the S module See Figures 1 and 2 5 Unscrew the four screws from the right accumulator fixing plate See Figures 3 and 5 6 Unscrew the four screws from the rear accumulator fixing plate See Figures 3 and 4 7 Remove the accumulator by unscrewing the four screws at the base legs See Figure 6 Figure 1 Figure ...

Page 268: ... to keep the temperature of the components from rising above 120 C After brazing is done check that the brazing is done properly and check for leaks before vacuum drying the pipes Direct the brazing torch flame away from the wiring and sheet metals inside the unit not to damage them Wet felt sheets listed below or its equivalent and place them around the areas to be brazed to protect the heat exch...

Page 269: ...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 connec tors or with the connectors themselves 3 If nothing appears on the display under item 2 above AND the voltage between pins 1 and 3 of CNDC is within the range between 220 VDC and 380 VDC control board failure is suspected...

Page 270: ... the replacement after turning off the main power of the unit It is recommended to read the data book before starting the replacement Required tools General tools Phillips screwdriver Socket wrench Hex key Plastic hammer Scale etc Torque wrench Screw lock Tension gauge Pulley puller Bearing puller and Pallet jack Instructions 1 Removing the motor 1 Disconnect the motor wiring 2 Remove the Bolt 1 t...

Page 271: ...ackwards then remove the V belt 4 Lift the motor using a pallet jack then pull it forward 2 Installing a new motor Basically the reverse order of step 1 Removing the motor can be followed to install a new motor 1 Lift the motor using a pallet jack then install it so that the dotted part is inside the rail 0000004498 BOOK 72 ページ２０１８年１月５日金曜日午前１０時３８分 ...

Page 272: ...en the Bolt 2 so that the V belt tension is proper and then tighten the Bolt 1 Refer to the following table for the V belt tension 4 Reconnect the motor wiring Belt tension Power source frequency Hz 50 60 50 60 15 5 16 5 14 5 15 5 20 0 22 5 19 5 21 0 5 0 5 5 5 0 5 5 5 4 5 5 0 Deflection force W N Amount of deflection L mm Model Name PFD P250VM E PFD P500VM E 0000004498 BOOK 73 ページ２０１８年１月５日金曜日午前...

Page 273: ...ing the bearing on the right side motor side 1 Remove the motor following the instructions in 1 1 through 4 2 Support the fan shaft in the center There are no problems to use blocks to support the fan weight 3 Loosen the pulley setscrew 4 Remove the pulley using a pulley puller Pulley setscrew 0000004498 BOOK 74 ページ２０１８年１月５日金曜日午前１０時３８分 ...

Page 274: ...g the bearing on the right side in the reverse order Refer to the following table for the tightening torque for pulley bearing setscrew Apply screw lock to the setscrews Refer to the following table for the horizontal pulley alignment Tightening torque N m 13 5 11 8 Pulley setscrew Bearing setscrew Horizontal pulley alignment Degree of paralleism K arc minute 10 or smaller Note Equivalent to 3 mm ...

Page 275: ... V belt and discharge thermistor should be removed before the fan ASSY is pulled out 5 Removing the bearing on the left side 1 Remove the maintenance panel 2 Loosen the two bearing setscrews and two fixing bolts 3 Remove the bearing using a bearing puller 6 Installing a new bearing on the left side Install a new bearing following step 5 Removing the bearing on the left side in the reverse order Re...

Page 276: ...vity of Various Parts The chart shows an approximate longevity of parts It is an estimation of the time when old parts may need to be replaced or repairs need to be made It does not mean that the parts must absolutely be replaced except for the fan belt Please note that the figures in the chart do not mean warranty periods 2 Notes The above chart shows a maintenance schedule for a unit that is use...

Page 277: ...lamp comes on Comes on when the output is Rapid drop in brightness on Replace if the light does not come on when the power is on Perform an operation check using the operation data Adequately controls the refrigerant temperature when the valve is switched Check temperature change when cooling heating is switched Replace if malfunctioning Check for clogging and tear Clean the filter Clean free of d...

Page 278: ... whether an error history remains on the nonvolatile memory on the indoor and outdoor units If an error history remains take out the data before an error occurs and correct the error after analyzing the causes Check each component based on the maintenance inspection items described on the previous page If problems are found repair the component At the completion of inspection delete the error hist...

Page 279: ...oto 3 Fig 1 Re lubrication should be performed during operation to cause the grease to be spread into every corner of the inside of the bearing However if it is difficult to replenish grease during operation because replenishment during operation at high speed may cause dangerous accidents after replenishing the grease while operation is stopped continue to replenish while performing intermittent ...

Page 280: ... 2 1 Preparation 4 9 2 2 Storing Data on a USB Memory Stick 4 9 2 3 Collecting Operation Data 6 9 2 4 Precautions 7 9 3 Software Rewrite Function on the USB 8 9 3 1 Preparation 8 9 3 2 Rewriting Software 8 9 3 3 Precautions 9 9 4 Maintenance LED Display and Troubleshooting 10 9 4 1 Maintenance LED Display Content List 10 9 4 2 Troubleshooting 13 0000004538 BOOK 1 ページ２０１７年１２月２５日月曜日午後７時４８分 ...

Page 281: ...GB_BS_09_A1 0000004538 BOOK 2 ページ２０１７年１２月２５日月曜日午後７時４８分 ...

Page 282: ...memory in the control board of the outdoor unit OC The data can be transferred and stored in a USB memory stick 2 Software rewrite function The software on outdoor units can be rewritten using a USB memory stick For detailed information about each function refer to Section 9 2 Operation Data Collection and Storage Functions and Sec tion 9 3 Software Rewrite Function on the USB For information rega...

Page 283: ..._A1 9 USB Function 9 1 2 System Structure 1 Control board on the outdoor unit CN601 SWP3 Push switch Function setting LED301 Maintenance LED CNUSB USB memory connector SW4 Dip switch SW6 10 SW7 9 0000004538 BOOK 2 ページ２０１７年１２月２５日月曜日午後７時４８分 ...

Page 284: ...ions USB 2 0 compatible Formatted in FAT 32 Without a security function 2 Portable battery charger Use a portable battery charger that meets the following specifications for rewriting the software USB 2 0 compatible Voltage and amperage rating of 5 V and 2 1 A MAX A USB cable is required to connect the control board and the portable battery charger Use a cable that meets the following specificatio...

Page 285: ...ed 2 Storing data on a USB memory stick Data can be stored to a USB memory stick either with the main power to the outdoor unit turned on Method 2 or off Method 1 For safety reasons it is recommended to store the data on a USB memory stick with the main power to the outdoor unit turned off Method 1 If turning off the power is not feasible take appropriate measures to ensure safety Method 1 recomme...

Page 286: ... stick from the control board Press and hold SWP3 ENTER for approximately 10 seconds until End disappears from the monitoring LED 301 Restart the indoor and outdoor units that were stopped to perform data storage If the data collection process needs to be started check the operation data collection status by following the procedures ex plained in 9 2 3 Collecting Operation Data and making the nece...

Page 287: ... Content List When ON or OFF is displayed go to step 2 and the later steps When Err is displayed go to step 3 and the later steps When F Er is displayed it indicates an error in the flash memory on the control board Refer to Section 9 4 2 Troubleshooting 2 Setting Start and End of data collection 1 Set the switches on the control board by following the table shown above Switch setting SW6 10 ON SW...

Page 288: ...nit operation If an error occurs refer to 9 4 2 Troubleshooting After normal startup set the operation status of the air conditioning units to the original status USB memory sticks may become unusable due to unexpected damage or memory shortage It is recommended to take extra USB memory sticks to the site If only the OS is operated due to problems with the OC collect data also from the OS by follo...

Page 289: ... board 3 Insert the USB memory stick into the USB port CNUSB on the control board 4 Connect the portable battery charger to the micro USB port CN601 The power of the control board will turn on 5 Make sure the display Pro is shown on the maintenance LED LED301 This shows that Software Rewrite Mode has been started 2 Performing software rewriting 1 Press SWP3 ENTER to start software rewrite When the...

Page 290: ...ol board Make sure the portable battery charger is sufficiently charged Rewrite error may occur if battery charge is insufficient Take care not to forget to remove the USB memory stick in step 3 2 or forget to turn off SW7 9 in step 3 3 9 3 2 Rewriting Software If these precautions are not taken the system may not start normally When rewriting ended unsuccessfully redo the procedure from step 1 3 ...

Page 291: ... is en abled See Section 9 4 2 Troubleshooting 1 1 and 1 2 2 Storage in progress 0 to 99 is displayed Status of the data storage to the USB memory stick is shown by the progress rate 3 Storage completed END The storage process has been completed successfully 4 Error USB memory side Er01 The storage process cannot be started due to failure of the USB memory stick See Section 9 4 2 Troubleshooting 1...

Page 292: ...ollection will be resumed automatically See Sec tion 9 4 2 Troubleshooting 2 1 7 Collection suspended OFF Collection of operation data is suspended 8 Flash memory error F Er Collection of operation data is suspended due to failure in the flash memory used to store opera tion data It may be necessary to change the board See Section 9 4 2 Troubleshooting 2 2 9 Error Err Error was found due to the fa...

Page 293: ...e has been completed successfully 13 Error USB memory side Er01 Software rewrite process cannot be started due to failure of the USB memory stick See Section 9 4 2 Troubleshooting 3 4 Er02 Software rewrite was stopped due to failure of the USB memory stick during the software rewrite process See Section 9 4 2 Troubleshooting 3 5 14 Error control board side Er10 Software rewrite was not completed d...

Page 294: ...mory stick If compliance is confirmed the USB memory stick may be broken Replace it with a new one 3 Maintenance LED displays Er01 Meaning or Cause Because there was a problem regarding the USB memory before the start of data storage data storage has not been com pleted Solution Check the connection of the USB memory stick If no problem is found the USB memory stick may be at fault Check the follo...

Page 295: ...de by following either of the two methods 1 or 2 the control board may be malfunctioning 2 Collecting operation data 1 Maintenance LED displays blinking ON Meaning or Cause Despite data collection function being enabled it is not started yet There may be two causes Firstly the initialization process immediately after the system startup may have inhibited the start of data collection Secondly M NET...

Page 296: ...has failed Solution After turning off control board switches SW7 9 turn on the system again If the switches are in the OFF position it means the software rewrite process has failed Try rewriting the software again by following the procedure detailed in 1 1 Starting software rewrite mode under Section 9 3 2 Rewriting Software If the problem persists rewrite the software using a ROM writer 4 Mainten...

Page 297: ...lems are found follow the procedure starting with the step explained in 1 Operation procedure 1 Starting software rewrite mode under 9 3 2 Rewriting Software 6 Maintenance LED displays Er10 or Er11 Meaning or Cause Because there was a problem in the control board during the software rewrite process software rewrite has not been com pleted Solution Try rewriting the software again by following the ...

Page 298: ...cators on the Outdoor Unit Circuit Board 10 1 LED Status Indicators 1 10 1 1 How to Read the LED 1 10 1 2 Initial LED Display 2 10 1 3 Clock Memory Function 3 10 2 LED Status Indicators Table 4 0000004550 BOOK 1 ページ２０１７年１２月２６日火曜日午後１２時１分 ...

Page 299: ...GB_BS_10_C 0000004550 BOOK 2 ページ２０１７年１２月２６日火曜日午後１２時１分 ...

Page 300: ...n Pressure and temperature are examples of numerical values and operating conditions and the on off status of solenoid valve are examples of flag display In the example above 1 through 9 are set to ON and 10 is set to OFF 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 the following conversion formula to convert ...

Page 301: ...e circuit board has failed 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 capacity H 20 20 HP For the first few minutes after power on ...

Page 302: ... 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 afte...

Page 303: ... Top 21S4c SV9 Power supply for indoor transmis sion line A A Bottom SV14 SV15 7 1110000000 Special control Retry operation Emergency op eration Communication error between the OC and OS Communication error 3 minute restart delay mode B B 9 1001000000 Communication demand ca pacity 0000 to 9999 B B If not demanded controlled appears on the display 10 0101000000 Contact point demand capac ity 0000 ...

Page 304: ...4 Unit No 5 Unit No 6 Unit No 7 Unit No 8 B Lit when thermostat is on Unlit when thermostat is off Bottom Unit No 9 Unit No 10 Unit No 11 Unit No 12 Unit No 13 Unit No 14 Unit No 15 Unit No 16 25 1001100000 Top Unit No 17 Unit No 18 Unit No 19 Unit No 20 Unit No 21 Unit 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 26 010...

Page 305: ...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 9999 A A Fan output 98 0100011000 Fan inverter output rpm FAN2 0000 to 9999 A A rpm 103 1110011000 LEV1 0000 to 9999 A A Outdoor LEV opening Fully open 480 104 0001011000 LEV2a 0000 to 9999 A A Outdoor LEV opening Fully open 3000 108 00110110...

Page 306: ...inverter 0001 0120 A A 184 0001110100 Error history 4 0000 to 9999 B B 185 1001110100 Error details of inverter Error details of inverter 0001 0120 A A 186 0101110100 Error history 5 0000 to 9999 B B 187 1101110100 Error 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...

Page 307: ... A A The unit is C 217 1001101100 TH3 99 9 to 999 9 A A 218 0101101100 TH7 99 9 to 999 9 A A 219 1101101100 TH6 99 9 to 999 9 A A 220 0011101100 TH2 99 9 to 999 9 A A 221 1011101100 TH5 99 9 to 999 9 A A 227 1100011100 THHS1 99 9 to 999 9 A A The unit is C 229 1010011100 High pressure sensor data 99 9 to 999 9 A A The unit is kgf cm 2 230 0110011100 Low pressure sensor data 99 9 to 999 9 A A 233 1...

Page 308: ...Fully open 3000 286 0111100010 LEV9 0000 to 9999 A A Outdoor LEV opening Fully open 480 288 0000010010 COMP Operation time Upper 4 digits 0000 to 9999 A A The unit is h 289 1000010010 COMP Operation time Lower 4 digits 0000 to 9999 A A 294 0110010010 COMP number of start stop events Upper 4 digits 0000 to 9999 A A Count up at start up The unit is Time 295 1110010010 COMP number of start stop event...

Page 309: ... 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 Address B 302 0111010010 Start up unit OC OS 1 OS 2 Address B 1 A The condition of either OC or OS is displayed individually B The condition of the entire refrigerant system is displayed 0000004550 BOOK 10 ページ２０１７年１２月２６日火曜日午後１２時１分 ...

Page 310: ...0 to 9999 0000 to 9999 370 0100111010 IC20 Address capacity code 0000 to 9999 0000 to 9999 371 1100111010 IC21 Address capacity code 0000 to 9999 0000 to 9999 372 0010111010 IC22 Address capacity code 0000 to 9999 0000 to 9999 373 1010111010 IC23 Address capacity code 0000 to 9999 0000 to 9999 374 0110111010 IC24 Address capacity code 0000 to 9999 0000 to 9999 375 1110111010 IC25 Address capacity ...

Page 311: ... 420 0010010110 IC13 Suction temperature 99 9 to 999 9 421 1010010110 IC14 Suction temperature 99 9 to 999 9 422 0110010110 IC15 Suction temperature 99 9 to 999 9 423 1110010110 IC16 Suction 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 S...

Page 312: ...99 9 to 999 9 465 1000101110 IC8 Liquid pipe temperature 99 9 to 999 9 466 0100101110 IC9 Liquid pipe temperature 99 9 to 999 9 467 1100101110 IC10 Liquid pipe temperature 99 9 to 999 9 468 0010101110 IC11 Liquid pipe temperature 99 9 to 999 9 469 1010101110 IC12 Liquid pipe temperature 99 9 to 999 9 470 0110101110 IC13 Liquid pipe temperature 99 9 to 999 9 471 1110101110 IC14 Liquid pipe temperat...

Page 313: ... to 999 9 497 1000111110 IC40 Liquid pipe temperature 99 9 to 999 9 498 0100111110 IC41 Liquid pipe temperature 99 9 to 999 9 499 1100111110 IC42 Liquid pipe temperature 99 9 to 999 9 500 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 temperatur...

Page 314: ...01 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 Refrigerant type Model and capacity Communication address A A 518 0110000001 OC address OC address display B 1 A The condition of either OC or ...

Page 315: ...9 Gas pipe temperature 99 9 to 999 9 542 0111100001 IC20 Gas pipe temperature 99 9 to 999 9 543 1111100001 IC21 Gas pipe temperature 99 9 to 999 9 544 0000010001 IC22 Gas pipe temperature 99 9 to 999 9 545 1000010001 IC23 Gas pipe temperature 99 9 to 999 9 546 0100010001 IC24 Gas pipe temperature 99 9 to 999 9 547 1100010001 IC25 Gas pipe temperature 99 9 to 999 9 548 0010010001 IC26 Gas pipe temp...

Page 316: ...584 0001001001 IC12SH 99 9 to 999 9 585 1001001001 IC13SH 99 9 to 999 9 586 0101001001 IC14SH 99 9 to 999 9 587 1101001001 IC15SH 99 9 to 999 9 588 0011001001 IC16SH 99 9 to 999 9 589 1011001001 IC17SH 99 9 to 999 9 590 0111001001 IC18SH 99 9 to 999 9 591 1111001001 IC19SH 99 9 to 999 9 592 0000101001 IC20SH 99 9 to 999 9 593 1000101001 IC21SH 99 9 to 999 9 594 0100101001 IC22SH 99 9 to 999 9 595 ...

Page 317: ...29 1010111001 IC7SC 99 9 to 999 9 630 0110111001 IC8SC 99 9 to 999 9 631 1110111001 IC9SC 99 9 to 999 9 632 0001111001 IC10SC 99 9 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 0000...

Page 318: ... to 999 9 662 0110100101 IC40SC 99 9 to 999 9 663 1110100101 IC41SC 99 9 to 999 9 664 0001100101 IC42SC 99 9 to 999 9 665 1001100101 IC43SC 99 9 to 999 9 666 0101100101 IC44SC 99 9 to 999 9 667 1101100101 IC45SC 99 9 to 999 9 668 0011100101 IC46SC 99 9 to 999 9 669 1011100101 IC47SC 99 9 to 999 9 670 0111100101 IC48SC 99 9 to 999 9 671 1111100101 IC49SC 99 9 to 999 9 672 0000010101 IC50SC 99 9 to ...

Page 319: ... date alter nate display 698 0101110101 Time of error detection 5 00 00 to 23 59 Hour minute 699 1101110101 Time of error detection 5 2 00 00 to 99 12 1 to 31 Year and month and date alter nate display 700 0011110101 Time of error detection 6 00 00 to 23 59 Hour minute 701 1011110101 Time of error detection 6 2 00 00 to 99 12 1 to 31 Year and month and date alter nate display 702 0111110101 Time o...

Page 320: ...0000 to 9999 732 0011101101 IC19 LEV opening 0000 to 9999 733 1011101101 IC20 LEV opening 0000 to 9999 734 0111101101 IC21 LEV opening 0000 to 9999 735 1111101101 IC22 LEV opening 0000 to 9999 736 0000011101 IC23 LEV opening 0000 to 9999 737 1000011101 IC24 LEV opening 0000 to 9999 738 0100011101 IC25 LEV opening 0000 to 9999 739 1100011101 IC26 LEV opening 0000 to 9999 740 0010011101 IC27 LEV ope...

Page 321: ...Operation mode 775 1110000011 IC12 Operation mode 776 0001000011 IC13 Operation mode 777 1001000011 IC14 Operation mode 778 0101000011 IC15 Operation mode 779 1101000011 IC16 Operation mode 780 0011000011 IC17 Operation mode 781 1011000011 IC18 Operation mode 782 0111000011 IC19 Operation mode 783 1111000011 IC20 Operation mode 784 0000100011 IC21 Operation mode 785 1000100011 IC22 Operation mode ...

Page 322: ...ter 0000 to 9999 819 1100110011 IC6 filter 0000 to 9999 820 0010110011 IC7 filter 0000 to 9999 821 1010110011 IC8 filter 0000 to 9999 822 0110110011 IC9 filter 0000 to 9999 823 1110110011 IC10 filter 0000 to 9999 824 0001110011 IC11 filter 0000 to 9999 825 1001110011 IC12 filter 0000 to 9999 826 0101110011 IC13 filter 0000 to 9999 827 1101110011 IC14 filter 0000 to 9999 828 0011110011 IC15 filter ...

Page 323: ...ilter 0000 to 9999 852 0010101011 IC39 filter 0000 to 9999 853 1010101011 IC40 filter 0000 to 9999 854 0110101011 IC41 filter 0000 to 9999 855 1110101011 IC42 filter 0000 to 9999 856 0001101011 IC43 filter 0000 to 9999 857 1001101011 IC44 filter 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 f...

Page 324: ...to 999 9 A A 873 1001011011 Power factor phase angle 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 980 0010101111 M NET processor S W version 0 ...

Page 325: ... 10 2 LED Status Indicators Table 10 LED Status Indicators on the Outdoor Unit Circuit Board 26 chapter 10 BS_10_C 0000004550 BOOK 26 ページ２０１７年１２月２６日火曜日午後１２時１分 ...

Page 326: ...www MitsubishiElectric com HWE17020 New publication effective Dec 2017 Specifications subject to change without notice Service Handbook PUHY P250YNW A PUHY P500YSNW A PFD P250VM E PFD P500VM E Model ...

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Mitsubishi Electric PFD-P250VM-E, Service Handbook

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