Mitsubishi Electric Mr.Slim PUZ-SM125YKA User Manual

SERVICE MANUAL
No.OCH708
SPLIT-TYPE AIR CONDITIONERS
R32
December 2018
Outdoor unit
[Model Name]
PUZ-SM100VKA
PUZ-SM125VKA
PUZ-SM140VKA
PUZ-SM100YKA
PUZ-SM125YKA
PUZ-SM140YKA
[Service Ref.]
PUZ-SM100VKA.TH
PUZ-SM125VKA.TH
PUZ-SM140VKA.TH
PUZ-SM100YKA.TH
PUZ-SM125YKA.TH
PUZ-SM140YKA.TH
PARTS CATALOG (OCB708)
CONTENTS
1. REFERENCE MANUAL ································· 2
2. SAFETY PRECAUTION ································· 2
3. SPECIFICATIONS ········································ 12
4. DATA ····························································· 13
5. OUTLINES AND DIMENSIONS ··················· 16
6. WIRING DIAGRAM ······································ 17
7. WIRING SPECIFICATIONS ·························· 20
8. REFRIGERANT SYSTEM DIAGRAM ············· 25
9. TROUBLESHOOTING ································· 27
10. FUNCTION SETTING ··································· 84
11. MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER ····90
12. EASY MAINTENANCE FUNCTION ··········· 100
13. DISASSEMBLY PROCEDURE ··················· 104

Mitsubishi Electric Mr.Slim PUZ-SM125YKA Specifications

General

Brand	Mitsubishi Electric
Model	Mr.Slim PUZ-SM125YKA
Category	Air Conditioner
Language	English

Summary

2. SAFETY PRECAUTION

Service Warnings and Cautions

Covers warnings, service cautions, and refrigerant charging procedures.

R32 Refrigerant Unit Precautions

Detailed cautions for operating and servicing R32 units.

3. SPECIFICATIONS

4. DATA

Refrigerant Charge and Compressor Data

Information on refrigerant refill and compressor specifications.

6. WIRING DIAGRAM

7. WIRING SPECIFICATIONS

7-1. FIELD ELECTRICAL WIRING (power wiring specifications)

Specifications for power wiring.

7-2. SEPARATE INDOOR UNIT/ OUTDOOR UNIT POWER SUPPLIES

Connection patterns for separate power supplies.

7-3. INDOOR – OUTDOOR CONNECTING CABLE

7-4. M-NET WIRING METHOD

8. REFRIGERANT SYSTEM DIAGRAM

9. TROUBLESHOOTING

General Troubleshooting and Test Run Procedures

General approach, test run methods, and pre-checks.

Self-Diagnosis and Remote Controller Checks

Procedures for self-diagnosis and remote controller testing.

Self-Diagnosis Action Table

Detailed actions for self-diagnosis codes.

Problem Troubleshooting Guide

Solutions for common operational phenomena and problems.

10. FUNCTION SETTING

Unit Function Settings via Remote Controller

12. EASY MAINTENANCE FUNCTION

Smooth Maintenance Procedures

13. DISASSEMBLY PROCEDURE

1. Service Panel & Top Panel Removal

2. Fan Motor Removal

3. Electrical Parts Box Removal

4. Electrical Parts Box Disassembly (VKA/YKA)

5. Thermistor <2-phase pipe> (TH6) Removal

6. Thermistor <Ambient> (TH7) Removal

7. Thermistors <Liquid>, <Discharge>, <Comp. Surface> Removal

8. LEV Coil Removal

9. LEV Removal

10. High Pressure Switch (63H) Removal

11. 4-Way Valve Coil (21S4) Removal

12. 4-Way Valve Removal

13. Compressor (MC) Removal