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Mitsubishi Electric MSZ-AY42VG-ET1 User Manual

Mitsubishi Electric MSZ-AY42VG-ET1
52 pages
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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
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Mitsubishi Electric MSZ-AY42VG-ET1 Specifications

General IconGeneral
BrandMitsubishi Electric
ModelMSZ-AY42VG-ET1
CategoryAir Conditioner
LanguageEnglish

Summary

General Safety Precautions

Preparation Before Service

Steps before starting air conditioner repair and maintenance.

Service Precautions

Safety guidelines during air conditioner repair and maintenance.

Refrigerant Handling Warning

Critical warning about refrigerant handling and potential injury.

Specifications

Wiring Diagrams

Refrigerant System Diagram

Service Functions

Wi-Fi Interface Setup

Guides users through connecting the Wi-Fi interface to a router.

Wi-Fi Connectivity Troubleshooting

Provides steps to resolve Wi-Fi connection issues.

Microprocessor Control

Emergency and Test Operation

Procedures for using the emergency operation switch for testing or service.

Troubleshooting

Troubleshooting Cautions

Important safety and procedural notes before starting troubleshooting.

Failure Mode Recall Function

How to recall and diagnose past error conditions using the remote controller.

Air Purifying Failure Recall

Specific failure mode recall procedure for the air purifying device.

Air Purifying Operation Check

Procedure to check the functionality of the air purifying power system.

Indoor Unit Failure Mode Tables

Tables detailing blinking patterns, conditions, and remedies for indoor unit failures.

Troubleshooting Instructions

Flowcharts and steps for diagnosing unit operation and error conditions.

Wi-Fi Interface Connectivity Check

Step-by-step guide to troubleshoot Wi-Fi connection problems.

Troubleshooting Check Table

A comprehensive table correlating indicator lamp patterns with troubleshooting steps.

Troubleshooting Main Parts

Criteria and methods for checking the resistance of key internal components.

Troubleshooting Flow: Indoor Fan Motor

A flowchart for diagnosing and resolving indoor fan motor errors.

Test Point Diagram and Voltage

Disassembly Instructions

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