Mitsubishi Electric MUZ-GE25VAD-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-GE25VAD-a1 Specifications

General

Category	Air Conditioner
Brand	Mitsubishi Electric
Model	MUZ-GE25VAD-a1
Cooling Capacity	2.5 kW
Heating Capacity	3.2 kW
Power Supply	220-240 V, 50 Hz
Outdoor Unit Dimensions (H x W x D)	550 x 800 x 285 mm
Weight (Indoor Unit)	9 kg
Outdoor Unit Dimensions (WxHxD)	800 x 550 x 285 mm
Indoor Unit Weight	9 kg

Summary

OUTDOOR UNIT SERVICE MANUAL

SPECIFICATION: MUZ-GE25VA to MUZ-GE33VA

SPECIFICATION: MUZ-GE35VA to MUZ-GE42VAD

SPECIFICATION: MUZ-GE50VA to MUZ-GE50VAD

SPECIFICATION: MUZ-GE60VA to MUZ-GE80VAD

OUTLINES AND DIMENSIONS

MUZ-GE25VA to MUZ-GE42VAD Dimensions and Space

Dimensions and installation space for models.

MUZ-GE50VA to MUZ-GE50VAD Dimensions and Space

Dimensions and installation space for models.

MUZ-GE60VA to MUZ-GE80VAD Dimensions and Space

Dimensions and installation space for models.

WIRING DIAGRAMS

MUZ-GE25VA to MUZ-GE35VA Wiring Diagrams

Wiring diagrams for specific models.

MUZ-GE35VA2 to MUZ-GE50VAD Wiring Diagrams

Wiring diagrams for specific models.

MUZ-GE60VA to MUZ-GE80VAD Wiring Diagrams

REFRIGERANT SYSTEM DIAGRAMS

MUZ-GE25VA to MUZ-GE42VAD Refrigerant Diagrams

MUZ-GE50VA to MUZ-GE60VAD Refrigerant Diagrams

MUZ-GE71VA to MUZ-GE80VAD Refrigerant Diagrams

PERFORMANCE CURVES

Capacity and Input Curves

Cooling Performance Data Tables

Heating Performance Data Tables

COMPRESSOR FREQUENCY CORRECTION CURVES

MUZ-GE25VA to MUZ-GE42VA Correction Curves

MUZ-GE50VA to MUZ-GE71VA Correction Curves

MUZ-GE80VA to MUZ-GE80VAD Correction Curves

SERVICE FUNCTIONS

TROUBLESHOOTING

Troubleshooting Precautions

Important precautions before troubleshooting.

Troubleshooting Procedures

FAILURE MODE RECALL FUNCTION

Indoor/Outdoor Unit Failure Mode Recall Flowchart

Detailed Outdoor Unit Failure Mode Recall Flowchart

Detailed flowchart for recalling failure modes.

OUTDOOR UNIT FAILURE MODE TABLE

Failure Mode Identification Table

Table listing failure modes, conditions, and remedies.

TROUBLESHOOTING CHECK TABLE

Symptom and Condition Check Table

Table of symptoms, LED indications, and conditions.

TROUBLE CRITERIA OF MAIN PARTS

Compressor Check Criteria

Fan Motor Check Criteria

Coil and Valve Check Criteria

TROUBLESHOOTING FLOWS

Inverter and Compressor Checks

Flowchart for checking inverter and compressor.

Compressor Start Failure Check

Procedure to check compressor start failure.

Outdoor Thermistor Checks

Check procedure for outdoor thermistors.

R.V. Coil and Mode Operation Check

Outdoor Fan Motor Check

Check procedure for outdoor fan motor.

Power Supply Check

Flowchart for checking power supply.

LEV (Expansion Valve) Check

Procedure to check LEV (Expansion Valve).

Inverter P.C. Board Check

Steps to check the inverter P.C. board.

Miswiring and Serial Signal Error Check

Procedures to check for miswiring and serial signal errors.

TEST POINT DIAGRAM AND VOLTAGE

Inverter P.C. Board Test Points and Voltages

Test points and voltage diagrams for inverter P.C. board.

DISASSEMBLY INSTRUCTIONS

MUZ-GE25VA to MUZ-GE42VAD Disassembly Procedures

MUZ-GE50VA to MUZ-GE50VAD Disassembly Procedures

MUZ-GE60VA to MUZ-GE80VAD Disassembly Procedures