Mitsubishi Electric MUZ-GE50VAD-a1 User Manual

SERVICE MANUAL
CONTENTS
1. TECHNICAL CHANGES ··································· 3
2. PART NAMES AND FUNCTIONS ····················· 4
3. SPECIFICATION ················································ 6
4. NOISE CRITERIA CURVES ·····························11
5. OUTLINES AND DIMENSIONS ······················ 13
6. WIRING DIAGRAM ·········································· 15
7. REFRIGERANT SYSTEM DIAGRAM ············· 27
8. PERFORMANCE CURVES ····························· 31
9. ACTUATOR CONTROL ··································· 63
10. SERVICE FUNCTIONS ···································· 64
11. TROUBLESHOOTING ····································· 65
12. DISASSEMBLY INSTRUCTIONS ···················· 86
SPLIT-TYPE AIR CONDITIONERS
NOTE:
RoHS compliant products have <G> mark on the spec name plate.
HFC
utilized
R410A
OUTDOOR UNIT
Indoor unit service manual
MSZ-GE•VA Series (OBH531)
PARTS CATALOG (OBB532)
MUZ-GE25VA
MUZ-GE25VAD
MUZ-GE33VA
MUZ-GE35VA
MUZ-GE35VA2
MUZ-GE35VAD
MUZ-GE42VA
MUZ-GE42VAD
Models
MUZ-GE25VA
-
A1
MUZ-GE50VA
-
A1
MUZ-GE25VA
-
A2
MUZ-GE50VA2
-
A1
MUZ-GE25VAD
-
A1
MUZ-GE50VAD
-
A1
MUZ-GE33VA
-
A1
MUZ-GE60VA
-
A1
MUZ-GE35VA
-
A1
MUZ-GE60VAD
-
A1
MUZ-GE35VA2
-
A1
MUZ-GE71VA
-
A1
MUZ-GE35VA2
-
A2
MUZ-GE71VAD
-
A1
MUZ-GE35VAD
-
A1
MUZ-GE80VA
-
A1
MUZ-GE42VA
-
A1
MUZ-GE80VA2
-
A1
MUZ-GE42VAD
-
A1
MUZ-GE80VAD
-
A1
No. OBH532
REVISED EDITION-E
Please void OBH532 REVISED EDITION-D.
Revision E:
• MUZ-GE25VAD-
A1
, MUZ-GE35VAD-
A1
, MUZ-GE42VAD-
A1
,
MUZ-GE50VAD-
A1
, MUZ-GE60VAD-
A1
, MUZ-GE71VAD-
A1
and MUZ-GE80VAD-
A1
have been added.

Mitsubishi Electric MUZ-GE50VAD-a1 Specifications

General

Brand	Mitsubishi Electric
Model	MUZ-GE50VAD-a1
Cooling Capacity	5.0 kW
Energy Efficiency Ratio (EER)	3.21
Coefficient of Performance (Heating)	3.61
Power Supply	220-240V, 50Hz
Refrigerant	R410A
Type	Split System
Outdoor Unit Dimensions (W x H x D)	800 x 550 x 290 mm

Summary

Outdoor Unit Service Manual

Refrigerant Handling Precautions

Technical Specifications

Wiring Diagrams

Service Functions

Troubleshooting Guide

Troubleshooting Cautions and Procedures

Important safety precautions and steps for diagnosing abnormalities using indicator lamps.

Failure Mode Recall Function

Indoor/Outdoor Unit Failure Mode Recall Flowchart

Flowchart for recalling failure modes on indoor and outdoor units.

Outdoor Unit Failure Mode Table and Check Table

Lists abnormal points, LED indications, conditions, remedies, and troubleshooting check table.

Main Parts Trouble Criteria

Troubleshooting Flowcharts

Inverter and Compressor Troubleshooting

Steps to diagnose inverter/compressor system, open phase, winding, and operation.

Thermistor, Coil, Fan Motor, Power Supply, and LEV Checks

Methods for testing thermistors, R.V. coil, fan motor, power supply, and expansion valve.

Miswiring and Serial Signal Error Diagnostics

Guide to identify and correct miswiring and serial communication errors between units.

Inverter P.C. Board Test Points and Voltages