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Mitsubishi MSZ-HJ25VA Service Manual

Mitsubishi MSZ-HJ25VA
40 pages
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CONTENTS
1. TECHNICAL CHANGES ······························3
2. PART NAMES AND FUNCTIONS ··················4
3. SPECIFICATION ········································5
4. NOISE CRITERIA CURVES ··························7
5. OUTLINES AND DIMENSIONS ·····················9
6. WIRING DIAGRAM ··································· 10
7. REFRIGERANT SYSTEM DIAGRAM ··········· 11
8. SERVICE FUNCTIONS ······························ 13
9. MICROPROCESSOR CONTROL ················ 15
10. TROUBLESHOOTING ······························· 19
11. DISASSEMBLY INSTRUCTIONS ················· 32
MSZ-HJ25VA
-
E1
,
ER1
MSZ-HJ35VA
-
E1
,
ER1
MSZ-HJ50VA
-
E1
,
ER1
MSZ-HJ60VA
-
E1
,
ER1
MSZ-HJ71VA
-
E1
,
ER1
Outdoor unit service manual
MUZ-HJ·VA Series (OBH648)
MXZ-HJVA Series
SERVICE MANUAL
No. OBH647
REVISED EDITION-C
INDOOR UNIT
PARTS CATALOG (OBB647)
NOTE:
RoHS compliant products have <G> mark on the spec name plate.
SPLIT-TYPE AIR CONDITIONERS
Models
Revision C:
• MSZ-HJ60VA-
E1
,
ER1
and
MSZ-HJ71VA-
E1
,
ER1
have been added.
Please void OBH647 REVISED EDITION-B.
MSZ-HJ25VA
MSZ-HJ35VA
MSZ-HJ50VA

Other manuals for Mitsubishi MSZ-HJ25VA

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Mitsubishi MSZ-HJ25VA Specifications

General IconGeneral
Indoor unit typeWall-mountable
Indoor unit width- mm
Indoor unit weight9000 g
Indoor units quantity1
Cooling airflow (indoor unit)571 m³/h
Heating airflow (indoor unit)598 m³/h
Indoor unit dimensions (WxDxH)799 x 232 x 290 mm
Indoor unit noise level (high speed)57 dB
TypeAir conditioner indoor unit
IonizerNo
Multi-split-
Product colorWhite
Remotely operatedYes
Cooling capacity (max)- BTU/h
Air conditioner functionsCooling, Heating
Cooling capacity in watts (max)3700 W
Heating capacity in watts (max)4200 W
Seasonal efficiency rating (cooling) (SEER)5.1
Heating capacity in watts (nominal) (Warmer heating season)- W
Seasonal efficiency rating (heating) (SCOP) (Average heating season)3.8
Airflow (low speed)227 m³/h
Airflow (high speed)438 m³/h
Airflow (medium speed)328 m³/h
Noise level (low speed)22 dB
Noise level (high speed)37 dB
Noise level (medium speed)30 dB
Design load (cooling)2.5 kW
Energy efficiency class (cooling)A
Power consumption (cooling) (max)730 W
Power consumption (heating) (max)870 W
Annual energy consumption (cooling)171 kWh
Hourly energy consumption (cooling)- kWh
Design load (heating) (Warmer heating season)- kW
Design load (heating) (Average heating season)1.9 kW
Annual energy consumption (heating) (Average heating season)698 kWh
Outdoor unit noise level63 dB

Summary

Technical Changes

Part Names and Functions

Specifications

Noise Criteria Curves

Outlines and Dimensions

Wiring Diagram

Refrigerant System Diagram

Service Functions

Timer Short Mode

Shortens compressor start time for servicing via P.C. board point.

P.C. Board Modification for Individual Operation

Modifies remote controller P.C. boards for multi-unit operation.

Auto Restart Function

Unit restarts automatically in same mode after power interruption.

Microprocessor Control

Cool Operation

Details the operation of the air conditioner in cooling mode.

Dry Operation

Details the operation of the air conditioner in dry mode.

Heat Operation

Details the operation of the air conditioner in heating mode.

Auto Vane Operation

Explains the automatic horizontal vane control and modes.

Timer Operation (ON/OFF Timer)

Instructions for setting ON/OFF timers for the air conditioner.

Emergency/Test Operation

Procedures for emergency and test run operations.

3-Minute Time Delay Operation

Protects the compressor from overload with a 3-minute delay.

Troubleshooting

Cautions on Troubleshooting

Important safety precautions and checks before performing troubleshooting.

Failure Mode Recall Function

Explains how to recall and check stored failure information.

Instruction of Troubleshooting

Step-by-step instructions and flowcharts for diagnosing issues.

Troubleshooting Check Table

A table mapping abnormal points to symptoms, conditions, and remedies.

Trouble Criterion of Main Parts

Criteria and methods for checking main components like thermistors and motors.

Troubleshooting Flow

Detailed flowcharts for troubleshooting specific issues like fan motor errors.

Test Point Diagram and Voltage

Provides diagrams of test points and voltage references on P.C. boards.

Disassembly Instructions

MSZ-HJ25VA MSZ-HJ35VA MSZ-HJ50VA

Step-by-step guide for disassembling smaller capacity indoor units.

MSZ-HJ60VA MSZ-HJ71VA

Step-by-step guide for disassembling larger capacity indoor units.