Mitsubishi Electric MSZ-AY25VGK-E1 User Manual

Models
MSZ-AY25VG -
ET1
MSZ-AY35VG -
ET1
MSZ-AY42VG -
ET1
MSZ-AY50VG -
ET1
MSZ-AY25VGK -
E1
,
SC1
,
ET1
,
ER1
MSZ-AY35VGK -
E1
,
SC1
,
ET1
,
ER1
MSZ-AY42VGK -
E1
,
SC1
,
ET1
,
ER1
MSZ-AY50VGK -
E1
,
SC1
,
ET1
,
ER1
MSZ-AY25VGKP -
E1
,
SC1
,
ET1
,
ER1
MSZ-AY35VGKP -
E1
,
SC1
,
ET1
,
ER1
MSZ-AY42VGKP -
E1
,
SC1
,
ET1
,
ER1
MSZ-AY50VGKP -
E1
,
SC1
,
ET1
,
ER1
SERVICE MANUAL
INDOOR UNIT
PARTS CATALOG (OBB932)
CONTENTS
1. TECHNICAL CHANGES ······························3
2. PART NAMES AND FUNCTIONS ··················4
3. SPECIFICATION ········································5
4. NOISE CRITERIA CURVES ··························6
5. OUTLINES AND DIMENSIONS ·····················7
6. WIRING DIAGRAM ·····································8
7. REFRIGERANT SYSTEM DIAGRAM ··········· 13
8. SERVICE FUNCTIONS ······························14
9. MICROPROCESSOR CONTROL ·················20
10. TROUBLESHOOTING ······························· 30
11. DISASSEMBLY INSTRUCTIONS ················· 45
Outdoor unit service manual
MUZ-AY∙VG/VGH Series (OBH931)
MXZ-F∙VF/VFH Series (OBH790)
No. OBH932

Mitsubishi Electric MSZ-AY25VGK-E1 Specifications

General

Cooling Capacity	2.5 kW
Heating Capacity	3.2 kW
Seasonal Energy Efficiency Ratio (SEER)	8.6
Power Supply	220-240 V, 50 Hz
Energy Efficiency Class Cooling	A+++
Energy Efficiency Class Heating	A+++
Refrigerant	R32
Outdoor Unit Noise Level	49 dB(A)
Outdoor Unit Dimensions (W x H x D)	800 x 550 x 285 mm
Type	Air Conditioner
Indoor Unit Noise Level	19 dB (Low)

Summary

PART NAMES AND FUNCTIONS

SPECIFICATION

WIRING DIAGRAM

SERVICE FUNCTIONS

AUTO RESTART FUNCTION

Wi-Fi INTERFACE SETTING UP

Instructions for connecting the Wi-Fi interface to the network and MELCloud.

MICROPROCESSOR CONTROL

EMERGENCY/TEST OPERATION

TROUBLESHOOTING

CAUTIONS ON TROUBLESHOOTING

Essential safety precautions and checks before performing troubleshooting.

FAILURE MODE RECALL FUNCTION

Procedures for recalling and interpreting past error codes and abnormal conditions.

INSTRUCTION OF TROUBLESHOOTING

General guidelines and flowcharts for diagnosing unit problems.

TROUBLESHOOTING CHECK TABLE

A table listing symptoms, conditions, and remedies for common abnormalities.

TROUBLESHOOTING FLOW

Detailed step-by-step diagnostic flows for specific component errors.

TEST POINT DIAGRAM AND VOLTAGE

DISASSEMBLY INSTRUCTIONS