Mitsubishi Electric MU-GF20VA User Manual

SERVICE MANUAL
CONTENTS
1. TECHNICAL CHANGES ···································2
2. PART NAMES AND FUNCTIONS ·····················3
3. SPECIFICATION ················································4
4. NOISE CRITERIA CURVES ······························5
5. OUTLINES AND DIMENSIONS ························7
6. WIRING DIAGRAM ············································9
7. REFRIGERANT SYSTEM DIAGRAM ··············11
8. PERFORMANCE CURVES ·····························14
9. TROUBLESHOOTING ·····································29
10. DISASSEMBLY INSTRUCTIONS ····················31
Models
NOTE:
RoHS compliant products have <G> mark on
the spec name plate.
Indoor unit service manual
MS-GF•VA Series (OBH621)
MU-GF20VA
-
E1
MU-GF25VA
-
E1
MU-GF35VA
-
E1
MU-GF50VA -
E1
MU-GF60VA -
E1
MU-GF80VA -
E1
PARTS CATALOG (OBB622)
SPLIT-TYPE AIR CONDITIONERS
OUTDOOR UNIT
HFC
utilized
R410A
No. OBH622
REVISED EDITION-A
Please void OBH622.
Revision A:
• MU-GF50VA-
E1
, MU-GF60VA-
E1
and
MU-GF80VA-
E1
have been added.
MU-GF20/25/35VA

Mitsubishi Electric MU-GF20VA Specifications

General

Cooling Capacity	2.0 kW
Heating Capacity	2.5 kW
Power Supply	220-240V, 50Hz
Refrigerant	R32
Indoor Unit Dimensions (HxWxD)	290 x 799 x 232 mm
Outdoor Unit Dimensions (HxWxD)	538 x 699 x 249 mm
Type	Split Type
Indoor Unit Noise Level	21 dB(A)

Summary

Noise Criteria Curves

MU-GF20VA Noise Curves

Noise criteria curves for MU-GF20VA model.

MU-GF25VA Noise Curves

Noise criteria curves for MU-GF25VA model.

MU-GF35VA Noise Curves

Noise criteria curves for MU-GF35VA model.

MU-GF50VA Noise Curves

Noise criteria curves for MU-GF50VA model.

MU-GF60VA Noise Curves

Noise criteria curves for MU-GF60VA model.

MU-GF80VA Noise Curves

Noise criteria curves for MU-GF80VA model.

Outlines and Dimensions

MU-GF20/25/35VA Dimensions

Outlines and dimensions for MU-GF20, 25, and 35VA models.

MU-GF50VA Dimensions

Outlines and dimensions for MU-GF50VA model.

MU-GF60/80VA Dimensions

Outlines and dimensions for MU-GF60 and 80VA models.

Wiring Diagrams

MU-GF20/25/35VA Wiring Diagram

Wiring diagram for MU-GF20, 25, and 35VA models.

MU-GF50VA Wiring Diagram

Wiring diagram for MU-GF50VA model.

MU-GF60/80VA Wiring Diagram

Wiring diagram for MU-GF60 and 80VA models.

Refrigerant System Diagrams

MU-GF20/25VA Refrigerant Diagram

Refrigerant system diagram for MU-GF20 and 25VA models.

MU-GF35/50VA Refrigerant Diagram

Refrigerant system diagram for MU-GF35 and 50VA models.

MU-GF60VA Refrigerant Diagram

Refrigerant system diagram for MU-GF60VA model.

MU-GF80VA Refrigerant Diagram

Refrigerant system diagram for MU-GF80VA model.

Performance Curves

Capacity and Input Curves

Cooling capacity and input curves across various conditions.

Outdoor Pressure and Current Curves

Performance curves for outdoor low pressure and unit current.

Model-Specific Performance Data

Detailed cooling operation performance data tables by model.

Troubleshooting

Troubleshooting Cautions and Procedures

Safety cautions and step-by-step troubleshooting procedures.

Main Parts Trouble Criterion

Resistance criteria for troubleshooting key components.

Disassembly Instructions

MU-GF20/25/35VA Disassembly

Instructions for disassembling MU-GF20, 25, and 35VA models.

MU-GF50VA Disassembly

Instructions for disassembling MU-GF50VA model.

MU-GF60VA Disassembly

Instructions for disassembling MU-GF60VA model.

MU-GF80VA Disassembly

Instructions for disassembling MU-GF80VA model.