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Mitsubishi Electric MUZ-GE35VA2-a2 User Manual

Mitsubishi Electric MUZ-GE35VA2-a2
96 pages
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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.
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Mitsubishi Electric MUZ-GE35VA2-a2 Specifications

General IconGeneral
Cooling Capacity3.5 kW
Heating Capacity4.0 kW
Power Supply220-240 V, 50 Hz
TypeSplit System
Indoor Unit Noise Level28-45 dB(A)
Outdoor Unit Noise Level50 dB(A)
Noise Level (Indoor Unit)28-45 dB(A)
Noise Level (Outdoor Unit)50 dB(A)

Summary

Outdoor Unit Service Manual

3. SPECIFICATION

Specifications and Rated Conditions of Main Electric Parts

6. Wiring Diagram

Wiring Diagram for MUZ-GE25VA -A1 / MUZ-GE35VA

Electrical wiring schematic for specific outdoor unit models.

Wiring Diagram for MUZ-GE25VA-A2 / MUZ-GE35VA2

Electrical wiring schematic for specific outdoor unit models.

Wiring Diagram for MUZ-GE25VAD / MUZ-GE35VAD

Electrical wiring schematic for specific outdoor unit models.

Wiring Diagram for MUZ-GE42VA

Electrical wiring schematic for specific outdoor unit models.

Wiring Diagram for MUZ-GE42VAD

Electrical wiring schematic for specific outdoor unit models.

Wiring Diagram for MUZ-GE50VA

Electrical wiring schematic for specific outdoor unit models.

Wiring Diagram for MUZ-GE50VA2

Electrical wiring schematic for specific outdoor unit models.

Wiring Diagram for MUZ-GE50VAD

Electrical wiring schematic for specific outdoor unit models.

Wiring Diagram for MUZ-GE60VA/MUZ-GE71VA/MUZ-GE80VA

Electrical wiring schematic for specific outdoor unit models.

Wiring Diagram for MUZ-GE60VAD/MUZ-GE71VAD/MUZ-GE80VA2/MUZ-GE80VAD

Electrical wiring schematic for specific outdoor unit models.

7. Refrigerant System Diagram

Max. Refrigerant Piping Length and Max. Height Difference

Additional Refrigerant Charge (R410A: g)

8. Performance Curves

8-2. Capacity and Input Correction by Operational Frequency of Compressor

8-3. Test Run Operation (How to operate fixed-frequency operation)

PERFORMANCE DATA COOL operation at Rated frequency

10. Service Functions

11. Troubleshooting

11-1. Cautions on Troubleshooting

Safety precautions and general checks before troubleshooting.

11-2. Failure Mode Recall Function

Flow Chart of Failure Mode Recall Function

Flowchart for recalling failure modes on indoor/outdoor units.

3. Outdoor Unit Failure Mode Table

Failure Mode Details and Remedies

Table listing abnormal points, LED indications, conditions, and remedies.

11-3. Troubleshooting Check Table

Troubleshooting Symptoms and Remedies

Table mapping symptoms, LED indications, and conditions to remedies.

11-4. Trouble Criterion of Main Parts

Thermistor Resistance Checks

Criteria for checking thermistor resistance with a tester.

Compressor and Motor Resistance Checks

Criteria for checking compressor and fan motor resistance.

Coil and Valve Resistance Checks

Criteria for checking R.V. coil and LEV coil resistance.

11-5. Troubleshooting Flow

How to Check Inverter/Compressor

Step-by-step guide for inverter and compressor checks.

Check of Open Phase

Procedure to check for open phase in the compressor circuit.

Check of Compressor

Procedure to check the compressor's normal operation.

D Check of Compressor Winding

E Check of Compressor Operation Time

Procedure to measure compressor operation time until overcurrent.

F Check of Compressor Start Failure

Procedure to check for compressor start failure.

G Check of Outdoor Thermistors

H Check of R.V. Coil

Procedure to check the R.V. coil for defects.

① Check of Outdoor Fan Motor

J Check of Power Supply

K Check of LEV (Expansion Valve)

L Check of Inverter P.C. Board

M How to Check Miswiring and Serial Signal Error

11-6. Test Point Diagram and Voltage

Inverter P.C. Board Testing Points

Diagram showing test points and voltage readings on the inverter P.C. board.

12. Disassembly Instructions

6. Removing the Compressor and 4-Way Valve

Procedure for removing the compressor and 4-way valve.

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