Mitsubishi Electric PUMY-HP36NKMU1 Technical & Service Manual Download Page 1 | Manualshive

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Mitsubishi Electric PUMY-HP36NKMU1 Technical & Service Manual Download Page 1

TECHNICAL & SERVICE MANUAL

OUTDOOR UNIT

No. OCH733

HFC

utilized

R410A

February 2020

Note:

• This service manual

describes technical data of

the outdoor units only.

<Outdoor unit>

[Model Name]

Model name

indication

PARTS CATALOG (OCB733)

PUMY-P36NKMU3

PUMY-P48NKMU3

PUMY-P60NKMU3

PUMY-HP36NKMU1

PUMY-HP48NKMU1

PUMY-P36NKMU3-BS

PUMY-P48NKMU3-BS

PUMY-P60NKMU3-BS

Salt proof model

PUMY-P36NKMU3

PUMY-P48NKMU3

PUMY-P60NKMU3

PUMY-HP36NKMU1

PUMY-HP48NKMU1

PUMY-P36NKMU3-BS

PUMY-P48NKMU3-BS

PUMY-P60NKMU3-BS

[Service Ref.]

CONTENTS

  1. SAFETY PRECAUTION .....................................2
  2. OVERVIEW OF UNITS .......................................5
  3. SPECIFICATIONS ............................................10
  4. DATA .................................................................12
  5. OUTLINES AND DIMENSIONS .......................32
  6. WIRING DIAGRAM ...........................................33
7. NECESSARY CONDITIONS FOR SYSTEM CONSTRUCTION .......36
  8. TROUBLESHOOTING ......................................47
9. ELECTRICAL WIRING ...................................125
10. REFRIGERANT PIPING TASKS ....................130
11. DISASSEMBLY PROCEDURE .......................137

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

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Summary of Contents for PUMY-HP36NKMU1

Page 1: ...S PUMY P48NKMU3 BS PUMY P60NKMU3 BS Salt proof model PUMY P36NKMU3 PUMY P48NKMU3 PUMY P60NKMU3 PUMY HP36NKMU1 PUMY HP48NKMU1 PUMY P36NKMU3 BS PUMY P48NKMU3 BS PUMY P60NKMU3 BS Service Ref CONTENTS 1 SAFETY PRECAUTION 2 2 OVERVIEW OF UNITS 5 3 SPECIFICATIONS 10 4 DATA 12 5 OUTLINES AND DIMENSIONS 32 6 WIRING DIAGRAM 33 7 NECESSARY CONDITIONS FOR SYSTEM CONSTRUCTION 36 8 TROUBLESHOOTING 47 9 ELECTRI...

Page 2: ...ke sure that the inside and outside of refrige rant piping is clean and it has no contaminants such as sulfur oxides dirt shaving particles etc which are hazard to refrigerant cycle In addition use pipes with specified thickness The refrigerant oil applied to flare and flange connections must be ester oil ether oil or alkylbenzene oil in a small amount Ventilate the room if refrigerant leaks durin...

Page 3: ...tall the unit in a location where the salt will be washed away by rainwater If a sunshade is installed rainwater may not clean the panel 3 To ensure that water does not collect in the base of the outdoor unit make sure that the base is level not at angle Water collecting in the base of the outdoor unit could cause rust 4 If the unit is installed in a coastal area clean the unit with water regularl...

Page 4: ... 1 2 5 8 3 4 6 35 9 52 12 70 15 88 19 05 43 64 17 0 7 8 22 0 1 3 64 26 0 1 9 64 29 0 17 0 22 0 24 0 27 0 36 0 Nominal dimensions in Flare nut dimensions Outside diameter mm Dimension B Unit in mm R410A R22 Gauge manifold Charge hose Gas leak detector Refrigerant recovery equipment Refrigerant cylinder Applied oil Safety charger Charge valve Vacuum pump Flare tool Bender Pipe cutter Welder and nitr...

Page 5: ... unit applications that can be applied 2 Outdoor unit DIPSW5 4 for auxiliary heating control Set DIPSW5 4 when power is turned off at unit OFF Disable auxiliary Heating Function Initial setting ON Enable auxiliary Heating Function Indoor unit must be R410A UL model for this function to operate 3 Determine required indoor fan speed during defrost mode To set the fan speed see the chapter referring ...

Page 6: ...r thermo OFF conditions a These settings are done within Indoor DIPSW1 7 and DIPSW1 8 see chart below for options b Recommended SW1 7 OFF and SW1 8 ON will determine airflow based on Setting on the remote controller Fan speed setting Fan speed setting OFF ON SW1 7 SW1 8 OFF OFF Very low ON OFF Low OFF ON Setting on remote controller ON ON Stopped Auxiliary heating signal Thermo condition 5 Setting...

Page 7: ...R S R S CN24 H2 88H H1 88H 26H 88H 1 phase power supply 208V 230V 60Hz Control board FS1 2 Thermal fuse H1 H2 Heater 26H Overheat protection thermostat 88H Electromagnetic contactor Wiring diagram For relay X use the specifications given below operation coil Rated voltage 12 V DC Power consumption 0 9W or less Use the diode that is recommended by the relay manufacturer at both ends of the relay co...

Page 8: ...06 08 12 15 18 24 27 30 36 48 54 72 Only PUMY P60 is connectable Outdoor unit 4HP 5HP 7HP PUMY P36NKMU3 PUMY P36NKMU3 BS PUMY HP36NKMU1 PUMY P48NKMU3 PUMY P48NKMU3 BS PUMY HP48NKMU1 PUMY P60NKMU3 PUMY P60NKMU3 BS Applicable indoor unit Capacity Type 04 to Type 36 Type 04 to Type 54 Type 04 to Type 72 Number of units 1 to 11 unit 1 to 12 unit 1 to 12 unit Total system capacity range 50 to 130 of ou...

Page 9: ...utdoor D B 47 F W B 43 F D B 8 3 C W B 6 1 C 3 Operating temperature range Notes D B Dry Bulb Temperature W B Wet Bulb Temperature 1 50 to 115 F 10 to 46 C D B When connecting PKFY P06NBMU PKFY P08NHMU PFFY P06 08 12NEMU PKFY P04 06 08 12NLMU and PFFY P06 08 12NRMU type indoor unit 2 5 to 115 F 15 to 46 C D B When using an optional air protect guide However this condition does not apply to the ind...

Page 10: ...8 1 1 External dimension H x W x D mm 1 338 1 050 330 25 in 52 11 16 41 11 32 13 1 Protection devices High pressure protection High pressure Switch High pressure Sensor Inverter circuit COMP FAN Overcurrent detection Overheat detection Heat sink thermistor Compressor Compressor thermistor Over current detection Fan motor Overheating Voltage protection Refrigerant Type x original charge R410A 4 8 k...

Page 11: ...gh pressure protection High pressure Switch High pressure Sensor Inverter circuit COMP FAN Overcurrent detection Overheat detection Heat sink thermistor Compressor Compressor thermistor Over current detection Fan motor Overheating Voltage protection Refrigerant Type x original charge R410A 4 8 kg Control Linear Expansion Valve Net weight kg lb 126 278 Heat exchanger Cross Fin and Copper tube HIC c...

Page 12: ...ing Units Want to change to smaller indoor units Does it fulfill the load of each room CTo CTi L CTo Maximum Capacity CTmax CTi L CTi Need to select smaller outdoor unit Does it fulfill the load of each room Outdoor Unit Input Rated Outdoor Unit Input cave Determine the load L and the Indoor Outdoor Temperature n Total Number of Indoor Units k Indoor Unit Number Yes No No No No Yes No No Yes Yes C...

Page 13: ...door temp power input Coef cave ck Mk Mk n k 1 n k 1 The purpose of this flow chart is to select the indoor and outdoor units For other purposes this flow chart is intended only for reference ck Outdoor unit power input coefficient of k indoor unit room temp Refer to 4 2 Mk Number part of the k indoor unit model e g P80 80 Average Indoor temp power input Coef cave cave ck Mk Mk n k 1 n k 1 Outdoor...

Page 14: ... greater than 100 indoor model size are connected in total refer to STANDARD CAPACITY DIAGRAM Total Indoor Units Capacity CTi CTo Outdoor Rating G CTi 1 Outdoor Design Temperature Correction Piping Length Correction 36 0 0 98 0 93 32 8 kBtu h 6 Determination of Maximum System Capacity Comparison of Capacity between Total Indoor Units Capacity CTi and Total Outdoor Unit Capacity CTo CTi 32 4 CTo 32...

Page 15: ... is 35 1 kBtu h Proper outdoor units have been selected 8 Calculation of Maximum Indoor Unit Capacity of Each Room CTx CTo thus calculate by the calculation below Room1 Maximum Capacity Room1 Capacity after the Temperature Correction Room1 2 Total Capacity after the Temperature Correction 35 1 17 0 1 00 17 0 1 00 20 0 0 92 16 9 kBtu h OK fulfills the load 16 3 kBtu h Room2 Maximum Capacity Room1 C...

Page 16: ...emp 98 6 F 37 0 C D B Indoor temp 68 0 F 20 0 C W B Maximum System Capacity CTx Total Outdoor unit Capacity CTo so use the following formula Total Indoor units capacity 15 18 33 thus CTi 0 9 Refer to the tables in 4 4 STANDARD CAPACITY DIAGRAM PIo Outdoor unit Cooling Rated Power Input Correction Coefficient of Indoor temperature CTi 2 31 0 94 0 9 1 95 kW 0 85 Refer to 4 2 CORRECTION BY TEMPERATUR...

Page 17: ... Maximum System Capacity CTx Total Indoor unit Capacity CTi so use the following formula PIo Outdoor unit Heating Rated Power Input Correction Coefficient of Indoor temperature CTi 3 02 1 12 0 9 3 04 kW 1 09 Refer to 4 2 CORRECTION BY TEMPERATURE Coefficient of the outdoor unit for indoor unit 2 Outdoor temp 26 6 F 3 C W B Indoor temp 78 8 F 26 C D B Correction Coefficient of Indoor temperature 1 ...

Page 18: ...24 59 60 8 62 6 64 4 66 2 68 69 8 71 6 73 4 75 2 0 4 0 6 0 8 1 0 1 2 Ratio of cooling capacity Indoor Temperature CW B FW B 5 14 23 32 41 50 59 68 77 86 95 104 113 15 10 5 0 5 10 15 20 25 30 35 40 45 0 4 0 5 0 6 0 7 0 8 0 9 1 0 1 1 1 2 1 3 Ratio of cooling capacity Outdoor Temperature 67 0 F 19 4 C W B C D B F D B 5 14 23 32 41 50 59 68 77 86 95 104 113 118 0 0 0 2 0 4 0 6 0 8 1 0 1 2 Ratio of pow...

Page 19: ...5 10 15 0 8 1 3 1 2 1 1 1 0 0 9 0 7 0 6 0 5 0 4 1 4 Outdoor Temperature C W B F W B 70 0 F 21 1 C D B Ratio of heating capacity 25 20 15 10 5 0 5 10 15 13 4 5 14 23 32 41 50 59 0 0 0 2 0 4 0 6 0 8 1 0 1 2 1 4 Ratio of power input Outdoor Temperature C W B F W B 70 0 F 21 1 C D B 61 0 F 16 0 C D B 79 0 F 26 0 C D B Figure 9 Indoor unit temperature correction To be used to correct indoor unit capaci...

Page 20: ... 6 73 4 75 2 77 78 8 80 6 0 6 0 7 0 8 0 9 1 0 1 1 1 2 1 3 Ratio of heating capacity Indoor Temperature C D B F D B 25 20 15 10 5 0 5 10 15 13 4 5 14 23 32 41 50 59 0 8 0 7 0 6 0 5 0 4 1 4 1 3 1 2 1 1 1 0 0 9 Outdoor Temperature C W B F W B 70 0 F 21 1 C D B Ratio of heating capacity Indoor Temperature Indoor Temperature 25 20 15 10 5 0 5 10 15 13 4 5 14 23 32 41 50 59 0 4 0 6 0 8 1 0 1 2 1 4 1 6 1...

Page 21: ...6 32 2 0 1 99 9 37 7 33 1 0 6 Accumulator inlet 49 5 9 7 33 4 0 8 47 1 8 4 31 3 0 4 52 7 11 5 32 2 0 1 Compressor inlet 45 3 7 4 33 6 0 9 42 4 5 8 32 7 0 4 53 4 11 9 30 9 0 6 Indoor unit Lev inlet 83 7 28 7 100 2 37 9 71 1 21 7 98 8 37 1 89 6 32 0 104 0 40 0 Heat exchanger inlet 49 6 9 8 132 3 55 7 47 5 8 6 134 6 57 0 56 1 13 4 141 8 61 0 Operation PUMY HP36NKMU1 PUMY HP48NKMU1 Operating condition...

Page 22: ...ling and heating capacity 4 4 1 PUMY P36NKMU3 PUMY P36NKMU3 BS PUMY HP36NKMU1 cooling Ratio of capacity Total capacity of indoor units kBtu h Total capacity of indoor units kBtu h Ratio of power input Ratio of current Total capacity of indoor units kBtu h 0 10 20 30 40 50 0 0 0 2 0 4 0 6 0 8 1 0 1 2 1 4 1 6 0 10 20 30 40 50 0 0 0 2 0 4 0 6 0 8 1 0 0 10 20 30 40 50 0 0 0 2 0 4 0 6 0 8 1 0 1 2 1 4 1...

Page 23: ...s kBtu h Total capacity of indoor units kBtu h Total capacity of indoor units kBtu h 0 10 20 30 40 50 0 0 0 2 0 4 0 6 0 8 1 0 1 2 1 4 1 6 0 10 20 30 40 50 0 0 0 2 0 4 0 6 0 8 1 0 0 10 20 30 40 50 0 0 0 2 0 4 0 6 0 8 1 0 1 2 1 4 1 6 Ratio of capacity Ratio of power input Ratio of current 208 230 V G x ...

Page 24: ...tal capacity of indoor units kBtu h Total capacity of indoor units kBtu h Ratio of capacity Ratio of power input Ratio of current 0 10 20 30 40 50 60 70 0 0 0 2 0 4 0 6 0 8 1 0 1 2 0 10 20 30 40 50 60 70 0 0 0 2 0 4 0 6 0 8 1 0 1 2 1 4 1 6 0 10 20 30 40 50 60 70 0 0 0 2 0 4 0 6 0 8 1 0 1 2 1 4 1 6 208 230 V G x ...

Page 25: ...tal capacity of indoor units kBtu h Total capacity of indoor units kBtu h Ratio of capacity Ratio of power input Ratio of current 0 10 20 30 40 50 60 70 0 0 0 2 0 4 0 6 0 8 1 0 1 2 0 10 20 30 40 50 60 70 0 0 0 2 0 4 0 6 0 8 1 0 1 2 1 4 1 6 0 10 20 30 40 50 60 70 0 0 0 2 0 4 0 6 0 8 1 0 1 2 1 4 1 6 208 230 V G x ...

Page 26: ...nits kBtu h Total capacity of indoor units kBtu h Ratio of power input Ratio of current Total capacity of indoor units kBtu h 0 10 20 30 40 50 60 70 80 0 0 0 2 0 4 0 6 0 8 1 0 1 2 0 10 20 30 40 50 60 70 80 0 0 0 2 0 4 0 6 0 8 1 0 1 2 0 10 20 30 40 50 60 70 80 0 0 0 2 0 4 0 6 0 8 1 0 1 2 208 230 V G x ...

Page 27: ... kBtu h Total capacity of indoor units kBtu h Total capacity of indoor units kBtu h 0 10 20 30 40 50 60 70 80 0 0 0 2 0 4 0 6 0 8 1 0 1 2 0 10 20 30 40 50 60 70 80 0 0 0 2 0 4 0 6 0 8 1 0 1 2 0 10 20 30 40 50 60 70 80 0 0 0 2 0 4 0 6 0 8 1 0 1 2 Ratio of capacity Ratio of power input Ratio of current ...

Page 28: ...piping length from Figure 13 Then multiply by the heating capacity from Figure 9 and 10 in 4 2 CORRECTION BY TEMPERATURE to obtain the actual capacity 1 Capacity Correction Curve 0 50 100 150 200 250 300 350 400 450 500 550 600 0 50 0 55 0 60 0 65 0 70 0 75 0 80 0 85 0 90 0 95 1 00 0 50 100 150 200 250 300 350 400 450 500 550 600 0 50 0 55 0 60 0 65 0 70 0 75 0 80 0 85 0 90 0 95 1 00 18 kBtu h 27 ...

Page 29: ... unit Figure 15 PUMY P36NKMU3 PUMY P36NKMU3 BS PUMY HP36NKMU1 PUMY P48NKMU3 PUMY P48NKMU3 BS PUMY HP48NKMU1 Heating Figure 16 PUMY P60NKMU3 PUMY P60NKMU3 BS Cooling 0 20 40 60 80 100 120 140 160 180 200 220 240 260 0 70 0 75 0 80 0 85 0 90 0 95 1 00 30 kBtu h 45 kBtu h 60 kBtu h 78 kBtu h Capacity ratio Piping equivalent length ft Total capacity of indoor unit ...

Page 30: ...pacity by the appropriate correction factor from the following table to obtain the actual heating capacity Correction factor diagram Outdoor Intake temperature W B F C 43 6 37 4 36 2 32 0 28 2 25 4 21 6 18 8 14 10 5 15 4 20 13 25 Correction factor 1 0 0 98 0 89 0 88 0 89 0 9 0 95 0 95 0 95 0 95 0 95 0 95 Figure 17 PUMY P60NKMU3 PUMY P60NKMU3 BS Heating Total capacity of indoor unit 0 20 40 60 80 1...

Page 31: ...AND SOUND PRESSURE LEVEL dB 0 dB 0 0002 µbar BAND CENTER FREQUENCIES Hz PUMY P36NKMU3 PUMY P36NKMU3 BS PUMY HP36NKMU1 COOLING MODE HEATING 49 SPL dB 53 LINE 10 20 30 40 50 60 70 80 90 63 125 250 500 1000 2000 4000 8000 APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE NC 60 NC 50 NC 40 NC 30 NC 20 NC 70 PUMY P60NKMU3 PUMY P60NKMU3 BS COOLING MODE HEATING 58 SPL dB 59 LINE OCTAVE BAND SOUND PRE...

Page 32: ...m below shows a basic example Explanation of particular details are given in the installation manuals etc Min 15mm 19 32 Min 15mm 19 32 FREE Min 1000mm 39 3 8 Min 150mm 5 29 32 2 SERVICE SPACE Dimensions of space needed for service access are shown in the below diagram Min 500 19 11 16 Min 500 19 11 16 81 3 3 16 86 3 3 8 110 4 11 32 45 1 25 32 26 1 1 32 369 14 17 32 632 24 7 8 1338 52 11 16 362 14...

Page 33: ...33 OCH733 6 WIRING DIAGRAM PUMY P36NKMU3 PUMY P48NKMU3 PUMY P36NKMU3 BS PUMY P48NKMU3 BS ...

Page 34: ...34 OCH733 PUMY P60NKMU3 PUMY P60NKMU3 BS ...

Page 35: ...35 OCH733 PUMY HP36NKMU1 PUMY HP48NKMU1 ...

Page 36: ...5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 005 1 A transmission wire must be connected to each refrigerant system outdoor and indoor 2 Set addresses Outdoor unit 051 100 Indoor unit 001 050 Remote controller 101 200 3 PUMY has no 100s digit switch The address automatically become 100 if it is set as 01 50 controller controller CITY MULTI indoor unit CITY MULTI indoor unit CITY MULTI indoor ...

Page 37: ...nt Gas pipe 4 way valve Check valve Low pressure Thermistor TH6 Suction pipe Check valve High pressure Strainer Strainer Strainer Strainer Thermistor TH2 Hic pipe Refrigerant Liquid pipe Stop valve Service port Capillary tube Accumulator Strainer Restrictor valve Refrigerant flow in cooling Refrigerant flow in heating For the detailed procedure of group settings and paired settings refer to the re...

Page 38: ...g Capillary tube for oil separator inch mm ø0 098 o ø0 031 o L31 50 ø2 5 o ø0 8 o L800 Capillary tube for solenoid valve inch mm ø0 157 o ø0 117 o L19 685 ø4 0 o ø3 0 o L500 LEV A LEV B HIC Solenoid valve SV1 High pressure sensor 63HS High pressure switch 63H Low pressure sensor 63LS Oil separator Service port Strainer Distributor Compressor Thermistor TH4 Compressor Thermistor TH7 Ambient Outdoor...

Page 39: ...indoor unit c Set the address setting switch on outdoor unit P C B as shown below d Use the M NET control indoor unit M IC within the group with the most functions as the M IC Main unit Combinations of 1 through 3 above are possible TB5 TB15 01 101 M IC Main TB3 TB7 51 OC TB5 TB15 02 M IC Sub M NET RC 1 2 A B M1M2 S M1M2 S M1M2 S 1 2 M1M2 S Group A TB5 TB15 01 101 M NET RC Main 151 M IC TB3 TB7 51...

Page 40: ...ntrol indoor unit 1 The M NET remote controller address is the M NET control indoor unit main address plus 100 In this case it should be 101 M NET remote controller M NET RC and MA remote controller MA RC cannot be used together Do not connect anything with TB15 of M NET control indoor unit M IC Name Symbol Maximum units for connection Outdoor unit OC M NET control Indoor unit M IC Refer to 3 SPEC...

Page 41: ...nnect the termi nal S on the power supply unit with the earth g Set the address setting switch as follows h The group setting operations among the multiple M NET control indoor units is done by the M NET remote controller M NET RC after the electrical power has been turned on Unit Range Setting Method M IC Main 01 to 50 Use the smallest address within the same group of M NET control indoor units M...

Page 42: ...nnect together the terminal blocks TB5 for transmission wires for M NET control indoor units M IC that have been connected to different outdoor units OC Set all addresses to ensure that they are not overlapped M NET remote controller and MA remote controller cannot be connected with the M NET control indoor unit of the same group wiring together A B C E D M IC 51 TB5 M NET RC 01 TB5 03 M IC TB5 02...

Page 43: ...of using 2 remote controllers connect terminals 1 and 2 on transmission cable terminal block TB15 for each indoor unit with the terminal block for 2 MA remote controllers Set either one of the controllers to sub remote controller Refer to the installation manual of MA remote con troller a The same as above a b The same as above b c Connect terminals 1 and 2 on transmission cable terminal block TB1...

Page 44: ...ontroller cannot be used together with the M NET control indoor unit of the same group 3 MA remote controllers or more cannot be connected with the M NET control indoor unit of the same group The second MA remote controller is connected with the terminal block TB15 for the MA remote controller of the same M NET control indoor unit M IC as the first MA remote control NO MA RC 00 M IC 00 OC MA RC 00...

Page 45: ... power supply unit with the earth g Set the address setting switch as follows h The group setting operations among the multiple M NET control indoor units is done by the M NET remote controller M NET RC after the electrical power has been turned on Unit Range Setting Method M IC Main 01 to 50 Use the smallest address within the same group of indoor units M IC Sub 01 to 50 Use an address other than...

Page 46: ... E M IC 51 TB5 TB15 TB15 TB15 TB15 MA RC 01 M IC TB5 03 M IC TB5 02 M IC TB5 04 M IC 05 M IC TB5 07 M IC 06 MA RC MA RC MA RC OC 53 OC Power Supply Unit TB7 TB3 M1M2 S M1M2 S TB7 M1M2 S M1M2 S TB3 M1M2 S M1M2 S M1M2 S M1M2 S M1M2 S M1M2 S M1M2 S A B A B A B A B 1 2 1 2 1 2 1 2 1 2 TB15 TB5 M1M2 S 1 2 TB15 TB5 M1M2 S 1 2 TB15 D System controller NO NO Longest length via outdoor unit M NET cable L1 ...

Page 47: ... tester The resistance should be over 1 0 M Do not proceed inspection if the resistance is less than 1 0 M Inspect between the outdoor unit power supply terminal block and ground first metallic parts like refrigerant pipes or the electrical box next then inspect all electrical wiring of outdoor unit indoor unit and all linked equipment 3 Before operation a Turn the power supply switch of the outdo...

Page 48: ...modes in the order of Cool and Heat Check the auto vane with the F1 F2 buttons Press the RETURN button to return to Test run operation Press the ON OFF button When the test run is completed the Test run menu screen will appear The test run will automatically stop after 2 hours Test run operation Auto vane check Press the SELECT button and open the Vane setting screen Function buttons F1 F2 F3 F4 M...

Page 49: ...ort Compressor temperature thermistor TH4 open short Check delay code 1202 U4 5102 Liquid pipe temperature thermistor TH22 open short Suction pipe temperature thermistor TH6 open short Check delay code 1211 U4 5103 Gas pipe temperature thermistor TH23 open short U4 5105 Outdoor liquid pipe temperature thermistor TH3 open short Check delay code 1205 U4 5106 Ambient temperature thermistor TH7 open s...

Page 50: ...rn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Remedy 0403 Ed Serial communication error No Yes Are they connected normally Check the connection of the communication line CN2 and CN4 between the outdoor controller board and power board Connect the CN2 and CN4 properly Replace them in case of breakage The communication circuit of either the outdoor con...

Page 51: ... Refrigerant shortage while in heating operation Refrigerant liquid accumulation in compressor while indoor unit is OFF thermo OFF Diagnosis of defects Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Remedy ed 1102 U2 Compressor temperature trouble Yes Yes No Yes Yes No No No Is 5101 displayed when restarted Is the outdoor stop valve liq...

Page 52: ...ge Is the voltage normal value Is it free from any trace of over heating or burning Is the resistance detected Is the resistance detected Check the voltage and appearance of the outdoor controller board Disconnect the thermistor wiring to check the resistance Disconnect the indoor LEV wiring and check the resistance Replace the outdoor controller board Replace the thermistor Replace the indoor LEV...

Page 53: ...clogged filter or dirt on indoor unit Malfunction or locked indoor fan motor Decreased airflow caused by defective inspection of outdoor temperature thermistor It detects lower temperature than actual temperature Indoor LEV performance failure Malfunction of fan driving circuit SV1 performance failure Defective high pressure sensor Defective high pressure sensor input circuit on outdoor controller...

Page 54: ...ed Clean the filter Clogged filter No clog Continued from the previous page Is there dirt on the indoor heat exchanger Is the outdoor unit short cycled Is there dirt on the outdoor heat exchanger Are the pipes clogged or broken Wash the indoor heat exchanger Solve the short cycle Wash the outdoor heat exchanger Correct defective pipes dirty dirty short cycled no dirt no dirt no short cycle Continu...

Page 55: ...er heating or burning Replace the indoor controller board Check the voltage and appearance of the indoor controller board Check the resistance of SV1 Chart 3 of 4 For the voltage refer to 8 8 HOW TO CHECK THE COMPONENTS No No Yes Yes Yes Continued from the previous page Is the resistance detected Is the resistance detected Replace the TH7 Replace the indoor LEV Disconnect the indoor LEV wiring to ...

Page 56: ...y Chart 4 of 4 For the voltage refer to 8 8 HOW TO CHECK THE COMPONENTS No No Yes Continued from the previous page Is the voltage detected Replace the SV1 Replace the 63HS Replace the outdoor controller board Yes No Is the connector for outdoor controller board 63H disconnected or loose Reconnect the connector or connect it tightly Check the 63HS voltage Is the resistance detected Yes ...

Page 57: ...ection of TH4 Defective holder of TH4 Disconnection of LEV coil Disconnection of LEV connector LEV performance failure Diagnosis of defects Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Remedy Chart 1 of 2 32 F 0 700k 50 F 10 410k 68 F 20 250k 86 F 30 160k 104 F 40 104k No Yes No Yes No Yes Is the TH4 wiring disconnected Is the resista...

Page 58: ...r the voltage refer to 8 8 HOW TO CHECK THE COMPONENTS No No Yes Yes No Yes Continued from the previous page Is the voltage normal Is it free from any trace of over heating or burning Is the voltage detected Replace the indoor controller board Replace the 63HS Replace the outdoor controller board Check the voltage and appearance of the indoor controller board Check the 63HS voltage Is the resistan...

Page 59: ... Defective thermistor Defective outdoor controller board Indoor LEV performance failure Gas leakage or shortage Defective 63HS TH3 Thermistor Outdoor liquid pipe TH7 Thermistor Ambient LEV Linear expansion valve 63HS High pressure sensor Diagnosis of defects Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Remedy Chart 1 of 2 Yes No No No...

Page 60: ...he previous page Is the voltage detected Is the voltage normal value Is it free from any trace of over heating or burning Is the resistance detected Replace the outdoor controller board Replace the 63HS Replace the indoor LEV Replace the indoor controller board Check the 63HS voltage Check the voltage and appearance of the outdoor controller board Disconnect the indoor LEV wiring and check the res...

Page 61: ...atisfies the condition Outdoor liquid gas valve is closed Mulfunction of outdoor LEV LEV A blockage TH21 Indoor intake temperature thermistor TH22 Indoor liquid pipe temperature thermistor LEV Linear expansion valve Diagnosis of defects Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Remedy v Is the outdoor stop valve liquid gas fully op...

Page 62: ... outdoor controller board Defective outdoor power board TH21 Indoor intake temperature thermistor TH22 Indoor liquid pipe temperature thermistor Diagnosis of defects Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Remedy Is the connector for outdoor controller board or 4 way valve coil disconnected or loose Reconnect the connector or con...

Page 63: ...r temperature Thermistor failure Wire failure Defective outdoor controller board Diagnosis of defects Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Remedy 3121 Out of range outside air temperature Yes Yes Yes No No No Is the outdoor air temperature 17 F 27 C or higher Is the resistance normal Is wire condition normal Use in operation r...

Page 64: ...ctors or replacing boards Diagnosis Remedy 4100 UF Compressor current interruption Locked compressor Chart 1 of 2 Yes Yes Yes No No No Is the stop valve liquid gas fully open Is the power supply voltage normal Are they set properly Open the stop valve liquid gas fully Check the looseness disconnection or breakage of compressor wiring Ensure power supply from the facility Check for power supply ope...

Page 65: ... Remedy 4100 UF Chart 2 of 2 Yes Yes No No Are they connected properly Is the compressor faultily grounded Connect the compressor wiring U V and W phase properly then turn the power back ON Replace the outdoor power circuit board Defective outdoor power circuit board Replace the compressor Defective compressor Check whether the compressor is faultily grounded or not Continued from the previous pag...

Page 66: ...to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Remedy 4210 UP Compressor overcurrent interruption Chart 1 of 2 Yes Yes Yes No No No Is the stop valve liquid gas fully open Is the power supply voltage normal Are they set properly Open the stop valve liquid gas fully Check the looseness disconnection or breakage of compressor wiring Ensure power su...

Page 67: ...ose units short cycled Are the voltage among the phases U V V W and W U different Does it operate normally Check the DC fan motor Remove factor s causing the short cycle Replace the compressor Replace the outdoor power circuit board Complete Check the operation of indoor outdoor fan motors Check for indoor outdoor short cycle Disconnect the compressor wiring from the outdoor power circuit board th...

Page 68: ...4220 U9 The black square indicates a switch position 6 Continue to the next page Refer to 8 7 HOW TO CHECK THE PARTS 3 7 8 No No No No No Yes Yes Yes Yes Yes Is there any abnormality on wirings Which sub code is displayed Does the DC bus voltage rise to approx 380 V at PAM driving Is there any abnormality on PAM wirings or reacor Is there any abnormality at the PAM circuit on the outdoor power cir...

Page 69: ...99 Unit V Correct the CN5 wiring Continued from the previous page Is the power supply normal Is the bus voltage normal Check the power supply facility Check the resistor connected to 52C relay and reactor Replace it if the resistor is broken Replace the outdoor power circuit board if the resistor is not broken Operate the unit and check if the problem occurs again Check the bus voltage read by the...

Page 70: ...U5 Heat sink temperature trouble 32 F 0 180 kΩ 77 F 25 50 kΩ 122 F 50 17 kΩ 158 F 70 8 kΩ 194 F 90 4 kΩ No Yes No No Yes Yes No No Yes Yes Is 5110 displayed when restarted Does the fan rotate during compressor operation Is there any obstacle which blocks airflow around the heat sink Is there any abnormality such as disconnection looseness or breakage Is the resistance normal Refer to the diagnosis...

Page 71: ...disconnecting any connectors or replacing boards Diagnosis Remedy 4250 U6 Power module trouble Yes Yes No No Are they connected properly Is the check code 4250 still displayed Connect the compressor wiring U V and W phase properly then turn the power back ON Replace the outdoor power circuit board or the outdoor multi controller circuit board Defective outdoor power circuit board Replace the compr...

Page 72: ...tion ensures reliability of the product No No Yes Yes Yes No Has the fuse melted Is there any abnormality such as disconnection looseness or breakage Is the voltage normal Replace the outdoor controller board Replace the defective fan motor Connect the wiring connector properly Replace it in case of a breakage Replace the outdoor controller board Replace the defective fan motor Check the fuse on t...

Page 73: ...ting any connectors or replacing boards Diagnosis Remedy 5101 U3 Compressor temperature thermistor TH4 open short The black square indicates a switch position Detected in outdoor unit No Yes Yes Yes No No Is there any abnormality such as disconnection looseness or breakage Is the detected resistance normal Is the detected temperature normal Connect the wiring connector properly Replace the connect...

Page 74: ...5102 U4 Suction pipe temperature thermistor TH6 open short The black square indicates a switch position Detected in outdoor unit No Yes Yes Yes No No Is there any abnormality such as disconnection looseness or breakage Is the detected resistance normal Is the detected temperature normal Connect the wiring connector properly Replace it in the case of breakage Replace the thermistor Replace the cont...

Page 75: ...agnosis Remedy 5105 U4 Outdoor liquid pipe temperature thermistor TH3 open short The black square indicates a switch position SW1 Setting ON OFF Display on LED1 2 Unit 99 9 999 9 4 1 2 5 6 7 8 3 F No Yes Yes Yes No No Is there any abnormality such as disconnection looseness or breakage Is the detected resistance normal Is the detected temperature normal Connect the wiring connector properly Replac...

Page 76: ... Unit 99 9 999 9 4 1 2 5 6 7 8 3 F No Yes Yes Yes No No Is there any abnormality such as disconnection looseness or breakage Is the detected resistance normal Is the detected temperature normal Connect the wiring connector properly Replace it in case of breakage Replace the thermistor Replace the controller board Malfunction of thermistor circuit No abnormality A connector contact failure is suspe...

Page 77: ...tes a switch position No Yes Yes Yes No No Is there any abnormality such as disconnection looseness or breakage Is the detected resistance normal Is the detected temperature normal Connect the wiring connector properly Replace it in case of breakage Replace the thermistor Replace the controller board Malfunction of thermistor circuit No abnormality A connector contact failure is suspected Check th...

Page 78: ...7 8 3 F 99 9 999 9 No Yes Yes Yes No No Yes No Is there any abnormality such as disconnection looseness or breakage Is the detected resistance normal Is the detected temperature normal Connect the wiring connector properly Replace it in case of breakage Replace the thermistor Replace the outdoor controller board Malfunction of thermistor circuit No abnormality A connector contact failure is suspec...

Page 79: ...ntroller board Diagnosis of defects Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Remedy The black square indicates a switch position 63HS High pressure sensor SW1 Setting ON OFF Display on LED1 2 Unit 99 9 999 9 PSIG 4 1 2 5 6 7 8 3 No Yes Yes No No Is there any abnormality such as disconnection looseness or breakage Is the detected i...

Page 80: ...to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Remedy The black square indicates a switch position 63LS Low pressure sensor No Yes Yes No No Is there any abnormality such as disconnection looseness or breakage Is the detected internal pressure normal Is the detected pressure normal Connect the wiring connector properly Replace it in case of break...

Page 81: ...ry current error 10 consecutive second detection One time detection 34 A 38 A Three phase Yes Yes No No Yes No Is the power supply single phase Is there any abnormality such as disconnection looseness or breakage The power supply voltage might be decreased or abnormal Check the power supply facility Connect the compressor wiring properly Replace the outdoor power circuit board Malfunction of curre...

Page 82: ...y connectors or replacing boards Diagnosis Remedy 6600 A0 Duplex address error No Yes Yes No Is there any unit with the same address Does it operate normally Correct the address and turn the power OFF of indoor outdoor unit Fresh Master or Lossnay simultaneously for 2 minutes or more then turn the power back ON Malfunction of sending receiving circuit on indoor outdoor unit is suspected There is n...

Page 83: ...s Diagnosis of defects Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Remedy 6602 A2 Transmission processor hardware error Yes Yes No No A wiring work was performed while the power OFF Does it operate normally If the wiring work was performed while the power ON turn the power OFF of indoor outdoor unit Fresh Master or Lossnay simultaneo...

Page 84: ... disconnect transmission from to control system and centralized control system Diagnosis of defects Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Remedy 6603 A3 Transmission bus BUSY error No Yes Yes Yes No No Is the transmission line miswired Is the transmission line miswired Does it operate normally Correct the wiring then turn the p...

Page 85: ...fects Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Remedy 6606 A6 Signal communication error with transmission processor Yes No Does it operate normally Replace the controller Defect of error source controller There is no abnormality on the AC unit It might be caused by an external noise so check the transmission line to remove the fa...

Page 86: ...nding receiving circuit on indoor outdoor unit Disconnection of the connectors on the circuit board The cause of displayed address and attribute is on the indoor unit side An abnormality detected by the remote controller if receiving no ACK when sending data from the remote controller to the indoor unit While operating with multi refrigerant system indoor units an abnormality is detected when the ...

Page 87: ...y side An abnormality detected by the indoor unit if receiving no ACK when the indoor unit transmit signal to the Lossnay An abnormality is detected when the indoor unit transmits signal to Lossnay while the Lossnay is turned OFF While the indoor unit is operating with the other refrigerant Lossnay an abnormality is detected when the indoor unit transmits signal to the Lossnay while the outdoor un...

Page 88: ...ct kind of transmission line is used or not Correct it within the tolerance then perform the procedure 1 Connect the transmission line properly then perform the procedure 1 Is the abnormality replicated Is it set properly There is no abnormality on the AC unit It might be caused by an external noise so check the transmission line to remove the factor s Set the address properly then perform the pro...

Page 89: ...on Replace the controller board which the displayed address attribute belongs to Continued from the previous page Defective outdoor controller board repeater circuit on the outdoor unit is suspected Replace the outdoor controller board one by one then check for normal operation Delete the unnecessary address using a manual setting function on the remote controller Only for operating in a system wi...

Page 90: ...sis Remedy No response frame error For the tolerance refer to the Installation Manual Yes Yes Yes Yes No No No No Does it operate normally The transmission line is connected properly It is not exceeding the tolerance Is correct kind of transmission line used Replace the controller board Defect of the controller which the displayed address attribute belong to Connect the transmission line properly ...

Page 91: ... circuit Remote controller transmitting error caused by noise interference Diagnosis of defects Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Remedy Check the remote controller for main sub setting Conduct the Remote Controller Diagnosis 2 or more times Is NG displayed Turn the power back ON No Is 6832 or ERC displayed No abnormality I...

Page 92: ...cation receive error Chart 2 of 2 No abnormality It might be caused by an external noise so check the transmission line to remove the factor s No Yes Is the wiring connected properly meeting the condition Connect the wiring properly as specified in the chapter Electrical Work in the indoor unit Installation Manual Refer to the chapter Electrical Work Continued from the previous page ...

Page 93: ...ote Controller Diagnosis more than 2 times No No Is the check code 6832 or 6833 still displayed Is there only 1 remote controller set as the main controller Set one remote controller to main remote controller and the other to sub Disconnect and reconnect the connector CN3A then turn the power back ON Note It takes 6 seconds at maximum until the result is displayed No abnormality A connector or wir...

Page 94: ...nication send error Chart 2 of 2 No abnormality It might be caused by an external noise so check the transmission line to remove the factor s No Yes Is the wiring connected properly meeting the condition Connect the wiring properly as specified in the chapter Electrical Work in the indoor unit Installation Manual Refer to the chapter Electrical Work Continued from the previous page ...

Page 95: ... Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Remedy 7100 EF Total capacity error No Yes Yes No No Yes Is it set properly Is it set properly Is the total under 130 of outdoor unit capacity Check the capacity code switch SW2 on the indoor controller board on the connected indoor unit Check the model selection switch SW4 on the outdoor ...

Page 96: ...odel P04 to P54 model code 2 to 28 P60 model P04 to P72 model code 2 to 40 Diagnosis of defects Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Remedy 7101 EF Capacity code error Yes No Is it set properly Set the switch properly The model code of the connected indoor unit can be displayed by an operation of SW1 on the outdoor unit Check ...

Page 97: ...le only 1 ventilation unit Diagnosis of defects Make sure to turn the power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Remedy 7102 EF Connecting excessive number of units Yes No No Yes Is an indoor unit connected Does it exceed the limit Connect indoor unit Connect less number of units than the limit The model code of the connected indoor unit can be displayed...

Page 98: ...e power OFF before connecting disconnecting any connectors or replacing boards Diagnosis Remedy 7105 EF Address setting error Outdoor unit Yes No Is the address setting correct Set the address properly then turn the power OFF of indoor outdoor unit and remote controller simultaneously for 2 minutes or more and turn the power back ON Replace the outdoor controller board Check whether the outdoor un...

Page 99: ...before connecting disconnecting any connectors or replacing boards Diagnosis Remedy 7130 EF Incompatible unit combination error No Is the indoor unit authorized to connect with the outdoor unit Replace the indoor unit s to the one that is compatible Refer to the service manual of the outdoor unit or the connected indoor unit for the authorized combination Yes No Yes Check whether the model selecti...

Page 100: ...enced at thermostat OFF Light air automatically change over to set value by time or piping temperature at thermostat ON Fan stops during heating operation Heat Defrost The fan stops during defrosting Fan does not stop while operation has been stopped Light out Fan runs for 1 minute after stopping to exhaust residual heat only in heating No setting of fan while start SW has been turned on Heat Stan...

Page 101: ... each capacity SW3 Trial operation 1 ON OFF from outdoor unit ON OFF Any time after the power is turned ON Initial settings 2 Mode setting Heating Cooling SW5 Function switch 1 Can be set when off or during operation Initial settings 2 Change the indoor unit s LEV opening at startup Enable Normal To set the LEV opening at startup higher than usual 150 pulses To improve the operation with the LEV a...

Page 102: ...trical parts Be careful not to get electrical shock while working on electrical parts 2 Setting to energize the freeze stat heater optional part During heating operation only 3 Include when the heating operation is OFF 4 Can be set when OFF or during operation It reduces snow on the base even it blows inside the unit by setting the base heater ON while the HEAT operation is stopped Power consumpti...

Page 103: ...er consumption compared with ratings by setting SW1 2 Silent mode Silent mode operation Outdoor controller board DIP SW9 2 SW1 SW2 Function Demand control OFF ON ON OFF ON OFF OFF ON OFF ON ON 100 75 50 0 Normal Stop A Distant control board B Relay circuit C External output adapter PAC SA88HA E D Outdoor unit control board A Remote control panel B Relay circuit C External input adapter PAC SC36NA ...

Page 104: ... SV1 Switching valve SV2 2 2 Only HP36 HP48 model Linear expansion Valve LEV A Linear expansion Valve LEV B Measure the resistance between the terminals with a tester Winding temperature 68 F 20 W V U Normal 1567 5 156 8 1 1 0 05 M 40 4 k 220 22 k Open Abnormal Open or short Normal 0 305 0 015 Abnormal Open or short Normal Gray Black Gray Red Gray Yellow Gray Orange Abnormal 46 3 Open or short Nor...

Page 105: ...perating TEST POINT 2 VCC between 5 and 4 of the fan connector VCC 15 V DC TEST POINT 3 VCC between 6 and 4 of the fan connector VCC 0 6 5 V DC No Fail Fail Wiring contact check Contact of fan motor connector CNF1 2 Fuse check Check the fuse F500 on outdoor controller board Correct the wiring Is the fan motor normal Replace outdoor multi controller circuit board Replace defective the fan motor Rep...

Page 106: ...t board to CNDC PK connector No No Yes lit No No lit Yes No Multi controller circuit board check Yes blow Yes blow CNDC PK Power circuit board 3 1 CNDC PK CNAC2 RD Noise Filter Circuit Conv Circuit Multi controller circuit board 290 380 V DC 208 230 V AC 10 208 230 VAC TB1 10 CNAC RD F1 F2 F500 1 3 LI NI L1 L2 Is the fan motor normal Did the fuse blow Disconnect the FAN motor connector and measure...

Page 107: ... Replace the power circuit board and check 52C relay wiring power circuit board Check wiring Check model setting switch SW4 on the multi controller board Replace power board No normal Power circuit board check Normal Yes Is the voltage of the compressor U V U W and V W balanced Power supply 52C relay Bus bar voltage DC COMP Hz PAM OFF OFF ON OFF ON 0Hz ex 48 Hz 0V 290 325 V DC 360 380 V DC ON 208 ...

Page 108: ...tage 208 230 V AC 10 Check wiring Replace M NET power circuit board Check breaker and incoming power supply Check power circuit board Check wiring Check the voltage between M1 and M2 on the transmission terminal block TB3 Disconnect the branch box outdoor transmission wiring from the terminal block TB3 and check the voltage between M1 and M2 on TB3 again To check the voltage of the parts on this b...

Page 109: ...tant 3480 1 Rt 15exp 3480 273 t 273 1 1 Thermistor R120 7 465 k 2 B constant 4057 2 Rt 7 465exp 4057 273 t 393 1 1 68 F 20 250 k 86 F 30 160 k 104 F 40 104 k 122 F 50 70 k 140 F 60 48 k 158 F 70 34 k 176 F 80 24 k 194 F 90 17 5 k 212 F 100 13 0 k 230 F 110 9 8 k High temperature thermistor Thermistor Compressor TH4 0 10 20 30 40 50 20 10 0 10 20 30 40 50 4 14 32 50 68 86 104122 Temperature Tempera...

Page 110: ...ircuit between the pin 2 and pin 3 connectors 63LS to check the pressure with the self diagnosis LED1 2 1 When the pressure displayed on the self diagnosis LED1 2 exceeds 247 PSIG 1 7 MPaG the low pressure sensor has a problem 2 If other than 1 the control board has a problem 5 Remove the high pressure sensor 63HS from the control board and insert it into the connector for the low pres sure sensor...

Page 111: ... diagnosis LED1 2 1 When the pressure displayed on self diagnosis LED1 2 is between 0 and 14 PSIG 0 098 MPaG the high pressure sensor has a problem 2 When the pressure displayed on self diagnosis LED1 2 is approximately 725 PSIG 5 0 MPaG the control board has a problem 4 Remove the high pressure sensor from the control board and short circuit between the pin 2 and pin 3 connectors 63HS to check th...

Page 112: ...NF1 2 6 4 CNF1 2 Connect to fan motors 1 4 290V 380 V DC 5 4 15 V DC 6 4 0 6 5 V DC 7 4 15 V DC when stopped 0 15 V DC pulse when operated VDC TEST POINT1 Voltage between pins of C510 290V 380 V DC Same as CNF1 2 1 4 VFG TEST POINT4 Voltage between pin3 and pin4 of PC511 or PC512 Correspond to CNF1 2 7 4 TH4 Thermistor Compressor TH7 TH6 Thermistor Ambient Suction pipe 63HS High pressure sensor 63...

Page 113: ...B3B Connect to DCL TB U TB V TB W Connect to the compres sor MC Voltage among phases 10 180 V AC TB3 TB4 Voltage of 208 230 V AC is input Connect to the outdoor noise filter board TB1 TB2 Outdoor power circuit board PUMY P60NKMU3 PUMY P60NKMU3 BS PUMY HP36NKMU1 PUMY HP48NKMU1 Brief Check of POWER MODULE If they are short circuited it means that they are broken Measure the resistance in the followi...

Page 114: ...e out door multi controller circuit board CN4 CN6 Thermistor TH8 CNAC2 208 230 V AC Connect to the out door multi controller circuit board CNAC TB1B TB3B TB2B TB1A TB2A TB3A Connect to DCL El E2 E3 E4 Connect to the electrical parts box Outdoor power circuit board PUMY P36NKMU3 PUMY P36NKMU3 BS PUMY P48NKMU3 PUMY P48NKMU3 BS Brief Check of POWER MODULE If they are short circuited it means that the...

Page 115: ... AC Connect to the outdoor multi controller circuit board CNAC TB1 TB2 POWER SUPPLY Voltage of 208 230 V AC Connect to the outdoor power circuit board TB3 TB4 LI NI POWER SUPPLY Voltage of 208 230 V AC is input Connect to the terminal block TB1 Outdoor noise filter circuit board PUMY P60NKMU3 PUMY P60NKMU3 BS PUMY HP36NKMU1 PUMY HP48NKMU1 ...

Page 116: ...MY P36NKMU3 BS PUMY P48NKMU3 BS PUMY P60NKMU3 BS PUMY HP36NKMU1 PUMY HP48NKMU1 CN2 Connect to the outdoor multi controller circuit board CN102 1 2 24 30 V DC 3 4 24 30 V DC CN1 Connect to the outdoor power circuit board CNAC1 1 3 208 230 V AC TB1 Connect to the electrical parts box ...

Page 117: ... rotation frequency abnormality delay TH7 abnormality delay TH8 abnormality delay Display all abnormalities remaining in abnormality delay 9 10010000 Abnormality delay history 2 Heat sink overheating delay Compressor over current interception delay Voltage abnormality delay Insufficient refrigerant amount abnormality delay Current sensor primary current abnormality delay 63LS abnormality delay 63H...

Page 118: ... decrease prevention Min Sj correction depends on Td Min Sj correction depends on Shd LEV opening correction depends on Pd LEV opening correction depends on Td Correction of high compression ratio prevention Display active LEV control 47 11110100 State of compressor frequency control 1 Condensing temperature limit control Compressor temperature control Discharge temp heating backup control Pd abno...

Page 119: ...ncy 0 255 Hz Display of actual operating frequency 65 10000010 Target frequency 0 255 Hz Display of target frequency 66 01000010 Outdoor fan control step number 0 15 Display of number of outdoor fan control steps target 69 10100010 IC1 LEV Opening pulse 0 2000 pulse Display of opening pulse of indoor LEV 70 01100010 IC2 LEV Opening pulse 71 11100010 IC3 LEV Opening pulse 72 00010010 IC4 LEV Openin...

Page 120: ...t indoor SC SH IC1 SCm SHm 0 0 20 0 109 10110110 Target indoor SC SH IC2 110 01110110 Target indoor SC SH IC3 111 11110110 Target indoor SC SH IC4 112 00001110 Target indoor SC SH IC5 113 10001110 Indoor unitcheck status IC9 12 No 9 unit check No 10 unit check No 11 unit check No 12 unit check Light on at time of abnormality 114 01001110 Indoor unit operation mode IC9 12 No 9 unit mode No 10 unit ...

Page 121: ...ensor all thermistors and SC SH at time of abnormality delay 137 10010001 TH4 Compressor sensor data at time of abnormality delay C 99 9 999 9 F 138 01010001 TH6 Suction pipe sensor data at time of abnormality delay C 139 11010001 TH3 Outdoor liquid pipe sensor data at time of abnormality delay C 140 00110001 TH8 Heat sink sensor data at time of abnormality delay C 141 10110001 OC SC cooling at ti...

Page 122: ...101 IC10 Capacity code 161 10000101 IC11 Capacity code 162 01000101 IC12 Capacity code 163 11000101 IC9 SC SH 99 9 999 9 During heating subcool SC During cooling superheat SH Fixed to 0 during cooling operation Display of indoor SC SH data 164 00100101 IC10 SC SH 165 10100101 IC11 SC SH 166 01100101 IC12 SC SH 170 01010101 ROM version monitor 0 00 99 99 ver Display of version data of ROM 171 11010...

Page 123: ... of abnormality 200 00010011 High pressure sensor data at time of abnormality 99 9 999 9 PSIG Display of data from High pressure sensor all thermistors and SC SH at time of abnormality 201 10010011 TH4 Compressor sensor data at time of abnormality 99 9 999 9 F 202 01010011 TH6 Suction pipe sensor data at time of abnormality 203 11010011 TH3 Outdoor liquid pipe sensor data at time of abnormality 20...

Page 124: ...pening pulse of indoor LEV at time of abnormality delay 236 00110111 IC7 LEV opening pulse abnormality delay 237 10110111 IC8 LEV opening pulse abnormality delay 238 01110111 IC6 SC SH at time of abnormality delay 99 9 999 9 During heating subcool SC During cooling superheat SH Fixegd to 0 during cooling operation Display of indoor SC SH data at time of abnormality delay 239 11110111 IC7 SC SH at ...

Page 125: ...ble cord design 60245 IEC57 For example use wiring such as YZW 6 Install an earth line longer than power cables Warning Be sure to use specified wires to connect so that no external force is imparted to terminal connections If connections are not fixed firmly it may cause heating or fire Be sure to use the appropriate type of overcurrent protection switch Note that generated overcurrent may includ...

Page 126: ...The Ground fault interrupter should support inverter circuit The Ground fault interrupter should combine using of local switch or wiring breaker 2Please take the larger of F1 or F2 as the value for F0 F1 Total operating maximum current of the indoor units 1 2 F2 V1 Quantity of Type1 C V1 Quantity of Type2 C V1 Quantity of Type3 C V1 Quantity of Type4 C Indoor unit V1 V2 Type 1 PEFY P NMAU PVFY P N...

Page 127: ...0 m 2 M NET Remote control cables Kind of remote control cable Shielding wire 2 core CVVS CPEVS or MVVS Cable diameter AWG 20 to AWG 16 0 5 to 1 25 mm2 Remarks When 10 m is exceeded use a cable with the same specifications as transmission line wiring 3 MA Remote control cables Kind of remote control cable Sheathed 2 core cable unshielded CVV Cable diameter AWG 22 to AWG 16 0 3 to 1 25 mm2 AWG 18 t...

Page 128: ...ir settings switches Please consult the installation manual that comes with each unit for detailed information on setting procedures 9 6 EXAMPLE EXTERNAL WIRING DIAGRAM FOR A BASIC SYSTEM Outdoor unit Grounded Group operation Remote controller wire Pull box Indoor unit Breaker for Wiring and Current Leakage If you use Breaker for Wiring and Current Leakage If you use 1 25 mm2 2 Power supply single...

Page 129: ...ollowing formulas to calculate the electrical characteristics before applying for a capacity agreement with the local electric power company 9 7 1 Obtaining the electrical characteristics of CITY MULTI series system 1 Procedure for obtaining total power consumption The power consumption of the outdoor unit will vary depending on the total capacity of the selected indoor units 2 Method of obtaining...

Page 130: ...from the factory Therefore charge each refrigerant piping system with additional refrigerant at the installation site In addition in order to carry out service enter the size and length of each liquid pipe and additional refrigerant charge amounts in the spaces provided on the Refrigerant amount plate on the outdoor unit Calculation of additional refrigerant charge Calculate the additional charge ...

Page 131: ...elect Each Section of Refrigerant Piping Selecting the Refrigerant Branch Kit Select the size from the table to the right 1 Section From Outdoor Unit to First Branch A 2 Sections From Branch to Indoor Unit a b c d Each Section of Piping Branch header 4 branches CMY Y64 G E Branch header 8 branches CMY Y68 G E B A A a b c C c C C d H h L r Additional refrigerant charge Liquid Line Gas Line Piping D...

Page 132: ...erant Branch Kit Select Each Section of Refrigerant Piping Select the size from the table to the right 1 Section From Outdoor Unit to First Branch A 2 Sections From Branch to Indoor Unit a b c d e 3 Section From Branch to Branch B C Each Section of Piping Branch Joint CMY Y62 G E Branch Header 4 branches CMY Y64 G E Branch Header 8 branches CMY Y68 G E Additional refrigerant charge B A E F C D D D...

Page 133: ...ant at the installation site In addition in order to carry out service enter the size and length of each liquid pipe and additional refrigerant charge amounts in the spaces provided on the Refrigerant amount plate on the outdoor unit Calculation of additional refrigerant charge Calculate the additional charge using the liquid pipe size and length of the extended piping and total capacity of connec...

Page 134: ...Kit Select the size from the table to the right 1 Section From Outdoor Unit to First Branch A 2 Sections From Branch to Indoor Unit a b c d Each Section of Piping Branch header 4 branches CMY Y64 G E Branch header 8 branches CMY Y68 G E B A A a b c C c C C d H h L r Additional refrigerant charge Liquid Line Gas Line Piping Diameter inch mm Model Liquid Line inch mm Gas Line inch mm 3 4 ø19 05 3 8 ...

Page 135: ...size from the table to the right 1 Section From Outdoor Unit to First Branch A 2 Sections From Branch to Indoor Unit a b c d e 3 Section From Branch to Branch B C Each Section of Piping Branch Joint CMY Y62 G E Branch Header 4 branches CMY Y64 G E Branch Header 8 branches CMY Y68 G E Additional refrigerant charge B A E F C D D D D D A C b B 3 H h 4 L R 5 1 2 c d e a Note Pipe re branching after th...

Page 136: ...refrigerant of this system will leak out to this room if there is leakage at this indoor unit Direction of refrigerant flow Outdoor unit Branching header Maximum concentration Maximum refrigerant concentration of R410A of a room is 0 44kg K accordance with ISO 5149 1 To facilitate calculation the maximum concentration is expressed in units of kg K lbs ft kg lbs of R410A per K ft ISO 5149 1 Maximum...

Page 137: ...gram symbol in the connector housing Fan motor CNF1 CNF2 Thermistor HIC pipe TH2 Thermistor Outdoor liquid pipe TH3 Thermistor Compressor TH4 Thermistor Suction pipe Ambient Outdoor TH7 6 High pressure switch 63H High pressure sensor 63HS Low pressure sensor 63LS 4 way valve 21S4 Bypass valve SV1 Linear expansion valve LEV A LEV B Pull out the disconnected wire from the electrical parts box 5 Remo...

Page 138: ... are combined together Refer to procedure No 5 below to remove thermis tor Ambient TH7 Photo 6 Photo 7 5 Removing the thermistor Ambient TH7 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Disconnect the connector TH7 6 red on the multi con troller circuit board in the electrical parts box 4 Loosen the wire clamps on top of the electrical parts box See Photo 6 5 Pull ou...

Page 139: ...p valve fixing screws 5 16 then remove the valve bed See Photo 4 and 7 5 Remove 2 cover panel fixing screws 5 x 12 then slide the cover panel front upward to remove it The cover panel front is fixed to the cover panel rear with a hook on the rear side See Photo 4 6 Remove the cover panel rear fixing screws 2 for right side and 2 for rear 5 x 12 then slide the cover panel rear upward to remove it T...

Page 140: ...t with a wet cloth to prevent it from heating as the temperature below then braze the pipes so that the inside of pipes are not oxidized Bypass valve procedure 9 248 F 120 C or more High pressure switch and high pressure sensor proce dure 10 212 F 100 C or more Low pressure sensor procedure 11 212 F 100 C or more LEV procedure 12 248 F 120 C or more 11 Removing the low pressure sensor 63LS 1 Remov...

Page 141: ...nd outlet and then remove the compressor Note Recover refrigerant without spreading it in the air Photo 13 Figure 2 14 Removing the accumulator 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Remove the cover panel front Refer to procedure 8 5 4 Remove the cover panel rear Refer to procedure 8 6 5 Remove the side panel R Refer to procedure 8 7 6 Remove the electrical pa...

Page 142: ...oving the reactor DCL 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Remove the electrical parts box See photo 5 4 Remove 6 screws 4 x 10 for reactors to remove the reac tors See Figure 3 Figure 3 Reactors Screws for reactors ...

Page 143: ...housing Fan motor CNF1 CNF2 Thermistor HIC pipe TH2 Thermistor Outdoor liquid pipe TH3 Thermistor Compressor TH4 Thermistor Suction pipe Ambient Outdoor TH7 6 High pressure switch 63H High pressure sensor 63HS Low pressure sensor 63LS 4 way valve 21S4 Bypass valve SV1 Linear expansion valve CNLVA CNLVB Pull out the disconnected wire from the electrical parts box 5 Remove the terminal cover and dis...

Page 144: ...together Refer to procedure No 5 below to remove thermis tor Ambient TH7 Photo 6 5 Removing the thermistor Ambient TH7 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Disconnect the connector TH7 6 red on the multi con troller circuit board in the electrical parts box 4 Loosen the wire clamps on top of the electrical parts box See Photo 6 5 Pull out the thermistor Ambie...

Page 145: ...e the valve bed See Photo 4 and 7 5 Remove 2 cover panel fixing screws 5 x 12 then slide the cover panel front upward to remove it The cover panel front is fixed to the cover panel rear with a hook on the rear side See Photo 4 6 Remove the cover panel rear fixing screws 2 for right side and 2 for rear 5 x 12 then slide the cover panel rear upward to remove it The cover panel rear is fixed to the s...

Page 146: ... the cover panel rear Refer to procedure 8 6 5 Remove the side panel R Refer to procedure 8 7 6 Disconnect the connector 63LS blue on the multi con troller circuit board in the electrical parts box 7 Remove the electrical parts box See Photo 5 8 Recover refrigerant 9 Remove the welded part of low pressure sensor Refer to the notes below Photo 12 12 Removing linear expansion valve LEV A LEV B 1 Rem...

Page 147: ...ocedure 8 4 9 Remove 3 separator fixing screws 4 10 and remove the separator See Figure 2 10 Recover refrigerant 11 Remove the 3 compressor fixing nuts for motor using spanner or adjustable wrench 12 Remove the welded pipe of compressor inlet and outlet and then remove the compressor Note Recover refrigerant without spreading it in the air Photo 13 Figure 2 Photo 14 Separator fixing screws Separat...

Page 148: ...erant 9 Remove 2 welded pipes of accumulator inlet and outlet 10 Remove 2 accumulator leg fixing screws 4 10 See Photo 16 Note Recover refrigerant without spreading it in the air Photo 15 Photo 16 15 Removing the reactor DCL 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Remove the electrical parts box See photo 5 4 Remove 6 screws 4 x 10 for reactors to remove the rea...

Page 149: ...ontrol ler circuit board Diagram symbol in the connector housing Fan motor CNF1 CNF2 Thermistor HIC pipe TH2 Thermistor Outdoor liquid pipe TH3 Thermistor Compressor TH4 Thermistor Suction pipe Ambient Outdoor TH7 6 High pressure switch 63H High pressure sensor 63HS Low pressure sensor 63LS 4 way valve 21S4 Bypass valve SV1 SV2 Linear expansion valve LEV A LEV B Base heater SS Pull out the disconn...

Page 150: ...hey are combined together Refer to procedure No 5 below to remove thermis tor Ambient TH7 Photo 6 Photo 7 5 Removing the thermistor Ambient TH7 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Disconnect the connector TH7 6 red on the multi con troller circuit board in the electrical parts box 4 Loosen the wire clamps on top of the electrical parts box See Photo 6 5 Pull...

Page 151: ...p valve fixing screws 5 16 then remove the valve bed See Photo 4 and 7 5 Remove 2 cover panel fixing screws 5 x 12 then slide the cover panel front upward to remove it The cover panel front is fixed to the cover panel rear with a hook on the rear side See Photo 4 6 Remove the cover panel rear fixing screws 2 for right side and 2 for rear 5 x 12 then slide the cover panel rear upward to remove it T...

Page 152: ...ar Refer to procedure 8 6 5 Remove the side panel R Refer to procedure 8 7 6 Disconnect the connector 63LS blue on the multi con troller circuit board in the electrical parts box 7 Remove the electrical parts box See Photo 5 8 Recover refrigerant 9 Remove the welded part of low pressure sensor Refer to the notes below Photo 12 12 Removing linear expansion valve LEV A LEV B 1 Remove the service pan...

Page 153: ... and outlet and then remove the compressor Note Recover refrigerant without spreading it in the air Photo 13 Figure 2 14 Removing the accumulator 1 Remove the service panel See Photo 1 2 Remove the top panel See Photo 1 3 Remove the cover panel front Refer to procedure 13 3 4 Remove the cover panel rear Refer to procedure 13 5 5 Remove the side panel R Refer to procedure 8 7 6 Remove the electrica...

Page 154: ... in the connector housing Fan motor CNF1 CNF2 Base heater SS Pull out the disconnected wire from the electrical parts box See Photo 4 6 Loosen the wire clamps on the side of the motor support and separator 7 Remove 2 motor support fixing screws 5 x 12 then remove the motor support with fan motor still attached See Photo 16 8 Remove 4 base heater cover fixing screws 4 x 10 then remove the base heat...

Page 155: ...155 OCH733 ...

Page 156: ...ht 2020 MITSUBISHI ELECTRIC CORPORATION Published Feb 2020 No OCH733 Made in Japan Specifications are subject to change without notice HEAD OFFICE TOKYO BUILDING 2 7 3 MARUNOUCHI CHIYODA KU TOKYO100 8310 JAPAN ...

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