Mitsubishi Electric City Multi PUMY-SP112VKM User Manual

TECHNICAL & SERVICE MANUAL
OUTDOOR UNIT
HFC
utilized
R410A
April 2018
Note:
•
This service manual describes
technical data of the outdoor
units only.
<Outdoor unit>
[Model Name]
PARTS CATALOG (OCB668)
PUMY-SP112VKM
PUMY-SP112VKM.TH PUMY-SP112VKMR1.TH
PUMY-SP125VKM
PUMY-SP125VKM.TH PUMY-SP125VKMR1.TH
PUMY-SP140VKM
PUMY-SP140VKM.TH PUMY-SP140VKMR1.TH
PUMY-SP112YKM
PUMY-SP112YKM.TH PUMY-SP112YKMR1.TH
PUMY-SP125YKM
PUMY-SP125YKM.TH PUMY-SP125YKMR1.TH
PUMY-SP140YKM
PUMY-SP140YKM.TH PUMY-SP140YKMR1.TH
Salt proof model
[Service Ref.]
CONTENTS
1. SAFETY PRECAUTION
....................................
2
2. OVERVIEW OF UNITS
......................................
5
3. SPECIFICATIONS
.............................................
9
4. DATA
................................................................
11
5. OUTLINES AND DIMENSIONS
......................
26
6. WIRING DIAGRAM
.........................................
27
7. NECESSARY CONDITIONS FOR SYSTEM CONSTRUCTION
.....
29
8. TROUBLESHOOTING
....................................
47
9. ELECTRICAL WIRING
...................................
124
10. REFRIGERANT PIPING TASKS
....................
130
11. DISASSEMBLY PROCEDURE
.......................
137
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
PUMY-SP112VKM-BS
PUMY-SP112VKM.TH-BS PUMY-SP112VKMR1.TH-BS
PUMY-SP125VKM-BS
PUMY-SP125VKM.TH-BS PUMY-SP125VKMR1.TH-BS
PUMY-SP140VKM-BS
PUMY-SP140VKM.TH-BS PUMY-SP140VKMR1.TH-BS
PUMY-SP112YKM-BS
PUMY-SP112YKM.TH-BS PUMY-SP112YKMR1.TH-BS
PUMY-SP125YKM-BS
PUMY-SP125YKM.TH-BS PUMY-SP125YKMR1.TH-BS
PUMY-SP140YKM-BS
PUMY-SP140YKM.TH-BS PUMY-SP140YKMR1.TH-BS
No. OCH668
REVISED EDITION-B
Revision:
•Added
PUMY-SP112VKMR1.TH,
PUMY-SP125VKMR1.TH,
PUMY-SP140VKMR1.TH,
PUMY-SP112YKMR1.TH,
PUMY-SP125YKMR1.TH and
PUMY-SP140YKMR1.TH
in REVISED EDITION-B.
•Someotherdescriptionshave
been also modified.
OCH668 REVISED EDITION-A
is void.

Mitsubishi Electric City Multi PUMY-SP112VKM Specifications

General

Brand	Mitsubishi Electric
Model	City Multi PUMY-SP112VKM
Category	Air Conditioner
Language	English

Summary

1 SAFETY PRECAUTION

8 TROUBLESHOOTING

8-1. CHECK POINTS FOR TEST RUN

8-1-1-2. Test run for wired remote controller <PAR-31MAA> <PAR-32MAA>

8-1-2. Countermeasures for Error During Test Run

Error Code Countermeasures

Check code 0403 (Ed) Serial communication error

Serial Communication Error Diagnosis

Check code 1102 (U2) Compressor temperature trouble

Compressor Temperature Trouble Diagnosis

Troubleshooting flowchart for compressor temperature issues, including thermistor and LEV checks.

Check code 1102 (U2) Compressor temperature trouble (Continued)

Compressor Temperature Troubleshooting Steps

Continuation of troubleshooting for compressor temperature issues, checking controller boards.

Check code 1302 (UE) High pressure trouble

High Pressure Trouble Diagnosis

Troubleshooting guide for high pressure issues, covering stop valves, fans, and filters.

Check code 1302 (UE) High pressure trouble (Continued)

High Pressure Troubleshooting Steps

Continuation of high pressure troubleshooting, checking pipes, heat exchangers, and thermistors.

High Pressure Troubleshooting - LEV and Controller

Final steps for high pressure troubleshooting, focusing on LEV and controller boards.

High Pressure Troubleshooting - SV1 and 63HS

Troubleshooting steps for high pressure issues involving SV1 and the 63HS sensor.

Check code 1500 (U7) Superheat due to low discharge temperature trouble

Superheat Trouble Diagnosis

Troubleshooting flowchart for superheat issues, checking TH4 wiring, resistance, and LEV.

Check code 1500 (U7) Superheat due to low discharge temperature trouble (Continued)

Superheat Troubleshooting - LEV and Controller

Final steps for superheat troubleshooting, checking LEV and controller boards.

Check code 1501 (U2) Refrigerant shortage trouble

Refrigerant Shortage Trouble Diagnosis

Troubleshooting guide for refrigerant shortage, checking stop valves, leaks, and thermistors.

Check code 1501 (U2) Refrigerant shortage trouble (Continued)

Refrigerant Shortage Troubleshooting - 63HS and LEV

Final steps for refrigerant shortage troubleshooting, checking 63HS, LEV, and controller boards.

Check code 1501 (U2) Closed valve in cooling mode

Closed Valve in Cooling Mode Diagnosis

Troubleshooting flowchart for closed valve errors in cooling mode, checking stop valves and LEV.

Check code 1503 (P6) Freeze protection of branch box or indoor unit

Freeze Protection Troubleshooting

Troubleshooting steps for freeze protection errors, checking piping, wiring, and LEV.

Check code 1508 (EF) 4-way valve trouble in heating mode

4-Way Valve Trouble in Heating Mode Diagnosis

Troubleshooting for 4-way valve issues in heating mode, checking connectors, coils, and boards.

Check code 4100 (UF) Compressor current interruption (Locked compressor)

Compressor Current Interruption Diagnosis

Troubleshooting for compressor current interruption, checking stop valves, voltage, and wiring.

Check code 4100 (UF) Compressor current interruption (Continued)

Compressor Current Interruption Troubleshooting Steps

Final steps for compressor current interruption, checking compressor grounding and wiring.

Check code 4210 (UP) Compressor overcurrent interruption

Compressor Overcurrent Interruption Diagnosis

Troubleshooting for compressor overcurrent, checking stop valves, voltage, and fan operation.

Check code 4210 (UP) Compressor overcurrent interruption (Continued)

Compressor Overcurrent Interruption Troubleshooting Steps

Final steps for compressor overcurrent, checking wiring, fan motors, and voltage.

Check code 4220 (U9) Voltage shortage/overvoltage/PAM error/L1open phase/primary current sensor error/power synchronization signal error

Voltage and Current Sensor Error Diagnosis

Troubleshooting for voltage, PAM, and current sensor errors, checking wiring and power supply.

Check code 4220 (U9) Voltage shortage/overvoltage/PAM error/L1open phase/primary current sensor error/power synchronization signal error (Continued)

Voltage and Current Sensor Troubleshooting Steps

Final steps for voltage and current sensor errors, checking connectors, noise filter, and bus voltage.

Check code 4230 (U5) Heat sink temperature trouble

Heat Sink Temperature Trouble Diagnosis

Troubleshooting for heat sink temperature issues, checking fan, airflow, wiring, and thermistors.

Check code 4250 (U6) Power module trouble or Overcurrent trouble

Power Module and Overcurrent Trouble Diagnosis

Troubleshooting for power module or overcurrent issues, checking compressor wiring and boards.

Check code 4400 (U8) Fan trouble (Outdoor unit)

Fan Trouble (Outdoor Unit) Diagnosis

Troubleshooting for outdoor fan issues, checking fuses, connectors, voltage, and fan motor.

Check code 5101 (U3) Compressor temperature thermistor (TH4) open/short

Compressor Thermistor (TH4) Diagnosis

Troubleshooting for compressor thermistor errors, checking wiring, resistance, and temperature.

Check code 5102 (U4) Suction pipe temperature thermistor (TH6) open/short

Suction Pipe Thermistor (TH6) Diagnosis

Troubleshooting for suction pipe thermistor errors, checking wiring, resistance, and temperature.

Check code 5105 (U4) Outdoor liquid pipe temperature thermistor (TH3) open/short

Outdoor Liquid Pipe Thermistor (TH3) Diagnosis

Troubleshooting for outdoor liquid pipe thermistor errors, checking wiring, resistance, and temperature.

Check code 5106 (U4) Ambient temperature thermistor (TH7) open/short

Ambient Temperature Thermistor (TH7) Diagnosis

Troubleshooting for ambient temperature thermistor errors, checking wiring, resistance, and temperature.

Check code 5109 (U4) HIC pipe temperature thermistor (TH2) open/short

HIC Pipe Thermistor (TH2) Diagnosis

Troubleshooting for HIC pipe thermistor errors, checking wiring, resistance, and temperature.

Check code 5110 (U4) Heat sink temperature thermistor(TH8) open/short

Heat Sink Temperature Thermistor (TH8) Diagnosis

Troubleshooting for heat sink thermistor errors, checking wiring, resistance, and temperature.

Check code 5201 (F5) High pressure sensor (63HS) trouble

High Pressure Sensor (63HS) Trouble Diagnosis

Troubleshooting for high pressure sensor errors, checking wiring, pressure, and refrigerant.

Check code 5202 (F3) Low pressure sensor (63LS) trouble

Low Pressure Sensor (63LS) Trouble Diagnosis

Troubleshooting for low pressure sensor errors, checking wiring, pressure, and refrigerant.

Check code 5300 (UH) Primary current error

Primary Current Error Diagnosis

Troubleshooting for primary current errors, checking power supply, wiring, and current sensors.

Check code 6600 (A0) Duplex address error

Duplex Address Error Diagnosis

Troubleshooting for duplex address errors, checking unit addresses and power cycling.

Check code 6602 (A2) Transmission processor hardware error

Transmission Processor Hardware Error Diagnosis

Troubleshooting for transmission processor hardware errors, checking wiring and power cycling.

Check code 6603 (A3) Transmission bus BUSY error

Transmission Bus BUSY Error Diagnosis

Troubleshooting for transmission bus busy errors, checking wiring and noise interference.

Check code 6606 (A8) Signal communication error with transmission processor

Signal Communication Error Diagnosis

Troubleshooting for signal communication errors, checking wiring, power, and controller.

Check code 6607 (A7) No ACK error

No ACK Error Causes and Checkpoints

Explains causes of "No ACK error" like address changes, voltage decline, and noise.

Check code 6607 (A7) No ACK error (Continued)

No ACK Error Diagnosis (Fresh Master/Lossnay)

Troubleshooting for "No ACK error" related to Fresh Master and Lossnay units.

No ACK Error Address and Transmission Checks

Steps to check address settings and transmission lines for "No ACK error".

No ACK Error - Controller Board Issues

Troubleshooting steps involving controller boards and address information for "No ACK error".

Check code 6608 (A8) No response frame error

No Response Frame Error Diagnosis

Check code 6831, 6834 (E0/E4) MA communication receive error

MA Communication Receive Error Diagnosis

Check code 6831, 6834 (E0/E4) MA communication receive error (Continued)

MA Communication Receive Error - Wiring Checks

Check code 6832, 6833 (EF) MA communication send error

MA Communication Send Error Diagnosis

Check code 6832, 6833 (EF) MA communication send error (Continued)

MA Communication Send Error - Wiring Checks

Check code 7100 (EF) Total capacity error

Total Capacity Error Diagnosis

Check code 7101 (EF) Capacity code error

Capacity Code Error Diagnosis

Check code 7102 (EF) Connecting excessive number of units and branch boxes

Excessive Units/Branch Boxes Error Diagnosis

Check code 7105 (EF) Address setting error

Address Setting Error Diagnosis (Outdoor/Indoor/Branch Box)

Check code 7105 (EF) Address setting error (Continued)

Address Setting Error Diagnosis (M-NET RC)

Check code 7130 (EF) Incompatible unit combination error

Incompatible Unit Combination Error Diagnosis

11 DISASSEMBLY PROCEDURE

15. Removing the compressor (MC)

Removing the Compressor (MC)