Mitsubishi Electric MUZ-GA35VA User Manual

SERVICE MANUAL
CONTENTS
1. TECHNICAL CHANGES ····································4
2. PART NAMES AND FUNCTIONS······················8
3. SPECIFICATION·················································9
4. NOISE CRITERIA CURVES ·····························11
5. OUTLINES AND DIMENSIONS ·······················12
6. WIRING DIAGRAM ··········································13
7. REFRIGERANT SYSTEM DIAGRAM··············19
8. PERFORMANCE CURVES······························21
9. ACTUATOR CONTROL····································29
10. SERVICE FUNCTIONS·····································30
11. TROUBLESHOOTING······································30
12. DISASSEMBLY INSTRUCTIONS·····················51
13. PARTS LIST······················································54
14. RoHS PARTS LIST···········································58
Wireless type
Models
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
MUZ-GA25VA -
MUZ-GA25VA -
MUZ-GA25VA -
MUZ-GA25VA -
MUZ-GA35VA -
MUZ-GA35VA -
MUZ-GA25VAH -
MUZ-GA25VAH -
MUZ-GA25VAH -
MUZ-GA25VAH -
MUZ-GA35VAH -
MUZ-GA35VAH -
E2
E1
E4
E3
E2
E1
E2
E1
E4
E3
E2
E1
NOTE:
RoHS compliant products have <G> mark on the spec name plate.
For servicing of RoHS compliant products, refer to the RoHS Parts List.
HFC
utilized
R410A
Please void OB379 REVISED EDITION-B.
No. OB379
REVISED EDITION-C
Revision:C
● MUZ-GA25VA(H)- has been added.
E4
OUTDOOR UNIT
Indoor unit service manual
MSZ-GA•VA Series (OB378)
MSZ-CB•VA Series (OB441)
OB379 C--1qxp 07.2.1 2:25 PM Page 1

Mitsubishi Electric MUZ-GA35VA Specifications

General

Cooling Capacity	3.5 kW
Heating Capacity	4.0 kW
Power Supply	220-240 V, 50 Hz
Weight (Indoor Unit)	9 kg
Refrigerant	R410A
Indoor Unit Weight	9 kg
Type	Split System
Outdoor Unit Dimensions (HxWxD)	550 x 780 x 285 mm
Outdoor Unit Dimensions (W x H x D)	800 x 550 x 285 mm

Summary

Specification

Specifications and Rating Conditions of Main Electric Parts

Details specifications and operating conditions for key electrical components.

Wiring Diagram

Refrigerant System Diagram

Performance Curves

Capacity and Input Curves

Presents cooling capacity and input curves based on temperature conditions.

Capacity and Input Correction by Operational Frequency of Compressor

Test Run Operation (How to Operate Fixed-Frequency Operation)

Outdoor Low Pressure and Outdoor Unit Current

Troubleshooting

11-1. Cautions on Troubleshooting

Provides essential safety precautions before performing troubleshooting.

11-2. Failure Mode Recall Function

Explains how to recall and interpret stored failure modes.

11-3. Instruction of Troubleshooting

Offers guidance and procedures for systematic troubleshooting.

11-4. Troubleshooting Check Table

A table correlating LED indications with abnormal points and conditions.

11-5. Trouble Criterion of Main Parts

Lists main parts and their resistance criteria for diagnosing faults.

11-6. Troubleshooting Flow

Outlines a step-by-step flow for diagnosing common outdoor unit issues.

11-7. Test Point Diagram and Voltage

Provides diagrams and voltage checks for key electronic boards.

Disassembly Instructions

1. Removing the Cabinet

2. Removing the Inverter Assembly, Inverter P.C. Board and Power P.C. Board

Parts List (non-RoHS compliant)

13-1. Outdoor Unit Structural Parts and Functional Parts

13-2. Outdoor Unit Electrical Parts

RoHS Parts List (RoHS compliant)

14-1. Outdoor Unit Structural Parts and Functional Parts

14-2. Outdoor Unit Electrical Parts