Mitsubishi Electric PUZ-M200YKA User Manual

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
SERVICE MANUAL
R32
Outdoor unit
[Model Name]
PUZ-M200YKA
PUZ-M250YKA
[Service Ref.]
PUZ-M200YKA.UK
PUZ-M250YKA.UK
PARTS CATALOG (OCB737)
CONTENTS
1. REFERENCE MANUAL ···························· 2
2. SAFETY PRECAUTION ···························· 2
3. FEATURES ·········································· 12
4. SPECIFICATIONS ································· 13
5. DATA ·················································· 14
6. OUTLINES AND DIMENSIONS ················ 17
7. WIRING DIAGRAM ································ 18
8. WIRING SPECIFICATIONS ····················· 19
9. REFRIGERANT SYSTEM DIAGRAM ··········· 24
10. TROUBLESHOOTING ···························· 26
11. FUNCTION SETTING ····························· 80
12. MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER ···91
13. EASY MAINTENANCE FUNCTION ··········100
14. DISASSEMBLY PROCEDURE ················103
Note:
• This manual describes service
data of the outdoor units only.
No. OCH737
March 2020

Mitsubishi Electric PUZ-M200YKA Specifications

General

Series	PUZ
Cooling Capacity (kW)	20.0
Heating Capacity (kW)	22.4
Refrigerant	R410A
Type	Inverter Heat Pump
Power Supply	380-415V, 3 Phase, 50Hz

Summary

SAFETY PRECAUTIONS

CAUTIONS RELATED TO NEW REFRIGERANT

Provides crucial cautions for units utilizing R32 refrigerant, including preparation and during-service precautions.

SPECIFICATIONS

WIRING DIAGRAM

WIRING SPECIFICATIONS

REFRIGERANT SYSTEM DIAGRAM

REFRIGERANT COLLECTING (PUMP DOWN)

Provides a detailed procedure for pumping down the system to collect refrigerant safely.

TROUBLESHOOTING

10-3. HOW TO PROCEED "SELF-DIAGNOSIS"

Explains the process for initiating and performing self-diagnosis, including error history reset.

10-4. SELF-DIAGNOSIS ACTION TABLE

Details causes and corrective actions for abnormalities detected during unit operation and power-on.

Remote Controller Communication Errors

Guides on resolving remote controller transmission and signal receiving errors.

FUNCTION SETTING

UNIT FUNCTION SETTING BY THE REMOTE CONTROLLER

Guides on setting unit functions like timers, energy saving, and fan modes using the remote controller.

MONITORING OPERATION DATA

HOW TO "MONITOR THE OPERATION DATA"

EASY MAINTENANCE FUNCTION

SMOOTH MAINTENANCE

DISASSEMBLY PROCEDURE

Removing the compressor (MC)