Mitsubishi Electric PUZ-SWM100YAA User Manual

SERVICE MANUAL
No. OCH809
REVISED EDITION-A
R32
December 2023
PARTS CATALOG (OCB809)
CONTENTS
1. REFERENCE MANUAL ································ 2
2. SAFETY PRECAUTION ······························· 3
3. SPECIFICATIONS ······································ 11
4. DATA ··························································· 13
5. OUTLINES AND DIMENSIONS·················· 16
6. WIRING DIAGRAM ····································· 17
7. WIRING SPECIFICATIONS ························ 21
8. REFRIGERANT SYSTEM DIAGRAM ········ 22
9. TROUBLESHOOTING ································ 24
10. MONITORING THE OPERATION DATA
BY THE REMOTE CONTROLLER ············· 68
11. DISASSEMBLY PROCEDURE ··················· 73
Note:
• This manual describes
service data of the outdoor
units only.
AIR TO WATER HEAT PUMP UNITS
OUTDOOR UNIT
[Model Name]
PUZ-SWM60VAA
PUZ-SWM80VAA
PUZ-SWM100VAA
PUZ-SWM120VAA
PUZ-SWM140VAA
PUZ-SWM80YAA
PUZ-SWM100YAA
PUZ-SWM120YAA
PUZ-SWM140YAA
PUZ-SHWM60VAA
PUZ-SHWM80VAA
PUZ-SHWM100VAA
PUZ-SHWM120VAA
PUZ-SHWM140VAA
PUZ-SHWM80YAA
PUZ-SHWM100YAA
PUZ-SHWM120YAA
PUZ-SHWM140YAA
[Service Ref.]
PUZ-SWM60VAA.TR
PUZ-SWM80VAA.TR
PUZ-SWM100VAA.TR
PUZ-SWM120VAA.TR
PUZ-SWM140VAA.TR
PUZ-SWM80YAA.TR
PUZ-SWM100YAA.TR
PUZ-SWM120YAA.TR
PUZ-SWM140YAA.TR
PUZ-SHWM60VAA.TR
PUZ-SHWM80VAA.TR
PUZ-SHWM100VAA.TR
PUZ-SHWM120VAA.TR
PUZ-SHWM140VAA.TR
PUZ-SHWM80YAA.TR
PUZ-SHWM100YAA.TR
PUZ-SHWM120YAA.TR
PUZ-SHWM140YAA.TR
Revision:
• Added connectable indoor
units in REVISED
EDITION-A.
OCH809 is void.

Mitsubishi Electric PUZ-SWM100YAA Specifications

General

Brand	Mitsubishi Electric
Model	PUZ-SWM100YAA
Category	Heat Pump
Language	English

Summary

2. SAFETY PRECAUTION

2-1. ALWAYS OBSERVE FOR SAFETY

General safety rules to adhere to before and during repair services.

2-2. CAUTIONS RELATED TO NEW REFRIGERANT

Specific warnings and precautions for handling R32 refrigerant safely.

[1] WARNING for service

[2] Cautions for service

Specific cautions to be followed when performing service on the unit.

[4] Cautions for unit using R32 refrigerant

(1) Information on servicing

General guidelines and checks for performing service work safely.

(2) Repairs to Sealed Components

Specific procedures and precautions for repairing sealed components.

Cautions for unit using R32 refrigerant

(3) Repair to intrinsically Safe Components

(5) Detection of Flammable Refrigerants

Methods for detecting flammable refrigerants and safety measures.

(6) Leak Detection Methods

Techniques and tools for detecting refrigerant leaks.

(7) Removal and Evacuation

Procedures for safely removing and evacuating refrigerant.

(8) Charging Procedures

Steps for safely charging refrigerant into the system.

2-3. PRECAUTIONS WHEN REUSING EXISTING R22/R410A REFRIGERANT PIPES

(2) Cautions for refrigerant piping work

Important cautions for performing refrigerant piping work with R32.

2-4. Choosing the outdoor unit installation location

2-5. Minimum installation area

6 WIRING DIAGRAM

7 FIELD ELECTRICAL WIRING (power wiring specifications)

8 REFRIGERANT SYSTEM DIAGRAM

REFRIGERANT COLLECTING (PUMP DOWN)

9 TROUBLESHOOTING

9-1. TROUBLESHOOTING

Overview of troubleshooting actions based on check codes and unit conditions.

9-2. SELF-DIAGNOSIS ACTION TABLE

Table mapping detected abnormalities to their causes and actions.

Abnormalities detected while unit is operating

9-3. TROUBLESHOOTING OF PROBLEMS

Symptoms: “Please Wait” is kept being displayed on the remote controller.

Symptoms: Nothing is displayed on the remote controller. ①

Symptoms: Nothing is displayed on the remote controller. ②

Symptoms: Nothing is displayed on the remote controller. ③

9-4. HOW TO CHECK THE PARTS

9-5. HOW TO CHECK THE COMPONENTS

9-6. TEST POINT DIAGRAM

9-7. FUNCTION OF SWITCHES, CONNECTORS AND JUMPERS

Function of switches

<Display function of inspection for outdoor unit>

Display function of inspection for outdoor unit

<Abnormalities detected while unit is operating>

Troubleshooting guide for abnormalities detected during unit operation.

<Outdoor unit operation monitor function>

(3) When the display blinks

Interpreting LED blinking patterns for error codes during operation.

11 DISASSEMBLY PROCEDURE

1. Removing the service panel and top panel

OPERATING PROCEDURE

2. Removing the fan motor (MF1)

4. Disassembling the electrical parts box (V-type model only)

6. Disassembling the electrical parts box (S(H)WM140V model only)

11. Removing the 4-way valve coil (21S4), LEV coils (LEV-A, LEV-B, LEV-C(*1)), lead wire for high pressure switch.

13. Removing the compressor (MC)

Instructions for removing the compressor from the outdoor unit.

3. Removing the electrical parts box

5. Disassembling the electrical parts box (Y-type model only)

12. Removing the 4-way valve, LEVS (LEV-A, LEV-B, LEV-C(*1)), high pressure switch and high pressure sensor.