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Mitsubishi Electric MUZ-HJ25VA - E1 User Manual

Mitsubishi Electric MUZ-HJ25VA - E1
48 pages
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SERVICE MANUAL
CONTENTS
1. TECHNICAL CHANGES ··································· 3
2. PART NAMES AND FUNCTIONS ····················· 3
3. SPECIFICATION ················································ 4
4. NOISE CRITERIA CURVES ······························ 7
5. OUTLINES AND DIMENSIONS ························ 8
6. WIRING DIAGRAM ············································ 9
7. REFRIGERANT SYSTEM DIAGRAM ··············11
8. PERFORMANCE CURVES ····························· 13
9. ACTUATOR CONTROL ··································· 24
10. SERVICE FUNCTIONS ···································· 25
11. TROUBLESHOOTING ····································· 25
12. DISASSEMBLY INSTRUCTIONS ···················· 42
Models
SPLIT-TYPE AIR CONDITIONERS
MUZ-HJ25VA
-
E1
MUZ-HJ35VA
-
E1
MUZ-HJ50VA
-
E1
HFC
utilized
R410A
No. OBH648
REVISED EDITION-A
OUTDOOR UNIT
Indoor unit service manual
MSZ-HJ•VA Series (OBH647)
NOTE:
RoHS compliant products have <G> mark on the spec name plate.
PARTS CATALOG (OBB648)
MUZ-HJ25VA
MUZ-HJ35VA
Revision A:
• MUZ-HJ50VA-
E1
has been added.
Please void OBH648.
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Mitsubishi Electric MUZ-HJ25VA - E1 Specifications

General IconGeneral
Cooling Capacity2.5 kW
Heating Capacity3.2 kW
Energy Efficiency Ratio (EER)3.21
Coefficient of Performance (COP)3.61
Power Supply220-240 V, 50 Hz
RefrigerantR410A
Outdoor Unit Noise Level50 dB(A)
Indoor Unit Weight9 kg
Noise Level (Outdoor)50 dB(A)
TypeAir Conditioner
Indoor Unit Noise Level22-43 dB(A)
Dimensions (Outdoor Unit)550 x 800 x 285 mm
Noise Level (Indoor)19 dB (Low)

Summary

Specifications

Specifications and Rated Conditions of Main Electric Parts

Lists electrical components and their specifications for each model, including capacitors, fuses, and modules.

Wiring Diagram

Refrigerant System Diagram

Performance Curves

Capacity and Input Correction by Operational Frequency of Compressor

Shows how compressor frequency affects cooling/heating capacity and input correction factors.

Performance Data Cool Operation at Rated Frequency

Detailed tables of cooling performance data at rated frequency for various conditions.

Performance Data Heat Operation at Rated Frequency

Detailed tables of heating performance data at rated frequency for various conditions.

Actuator Control

Service Functions

Troubleshooting

Cautions on Troubleshooting

Important safety precautions and preliminary checks before starting troubleshooting procedures.

Outdoor Unit Failure Mode Table

A table correlating LED flash patterns with specific outdoor unit failures and remedies.

Troubleshooting Check Table

A comprehensive table listing symptoms, LED indications, conditions, and remedies for troubleshooting.

Trouble Criterion of Main Parts

Methods and criteria for testing key electrical and mechanical components for proper function.

Troubleshooting Flow

Step-by-step diagnostic flowcharts for identifying and resolving various operational issues.

Disassembly Instructions

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