Mitsubishi Electric MUZ-FH50VEHZ User Manual

SERVICE MANUAL
Models
OUTDOOR UNIT
Indoor unit service manual
MSZ-FH•VE Series (OBH623)
PARTS CATALOG (OBB625)
MUZ-FH25VEHZ
MUZ-FH35VEHZ
MUZ-FH25VEHZ
-
E1
,
E3
,
E4
,
ER1
,
ER3
,
ER4
,
ET1
,
ET2
MUZ-FH35VEHZ
-
E1
,
E2
,
ER1
,
ER2
,
ET1
,
ET2
MUZ-FH50VEHZ
-
E1
,
E2
,
ER1
,
ER2
,
ET1
,
ET2
CONTENTS
1. TECHNICAL CHANGES ······························3
2. PART NAMES AND FUNCTIONS ··················4
3. SPECIFICATION ········································5
4. NOISE CRITERIA CURVES ··························8
5. OUTLINES AND DIMENSIONS ·····················9
6. WIRING DIAGRAM ··································· 11
7. REFRIGERANT SYSTEM DIAGRAM ··········· 14
8. PERFORMANCE CURVES ························ 16
9. ACTUATOR CONTROL ····························· 28
10. SERVICE FUNCTIONS ······························ 29
11. TROUBLESHOOTING ······························· 30
12. DISASSEMBLY INSTRUCTIONS ················· 53
No. OBH625
REVISED EDITION-G
OBH625 REVISED EDITION-F is void.
Revision G:
• A warning when opening or closing the
valve has been added.
HFC
utilized
R410A

Mitsubishi Electric MUZ-FH50VEHZ Specifications

General

Cooling Capacity	5.0 kW
Heating Capacity	6.0 kW
Power Supply	220-240 V, 50 Hz
Refrigerant	R32
Outdoor Unit Noise Level	50 dB(A)
Outdoor Unit Weight	55 kg

Summary

Technical Changes

Specification

Performance Curves

Actuator Control

Service Functions

10-1. Change in Defrost Setting

Instructions on how to change the defrost finish temperature.

10-2. Pre-Heat Control Setting

Troubleshooting

11-1. Cautions on Troubleshooting

Important precautions to follow before and during troubleshooting.

11-2. Failure Mode Recall Function

11-5. Troubleshooting Flow

Step-by-step guide to diagnose and check inverter/compressor issues.

11-6. Test Point Diagram and Voltage

Diagram and voltage specifications for the inverter P.C. board.