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Mitsubishi Electric MSZ-AY35VGK-ER1 User Manual

Mitsubishi Electric MSZ-AY35VGK-ER1
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-AY35VGK-ER1 Specifications

General IconGeneral
TypeWall Mounted
Cooling Capacity3.5 kW
Heating Capacity4.0 kW
Power Supply220-240 V, 50 Hz
Outdoor Unit Dimensions (W x H x D)800 x 550 x 285 mm
Weight (Indoor Unit)9.5 kg
Energy Efficiency Class CoolingA++
Energy Efficiency Class HeatingA+
RefrigerantR32
Outdoor Unit Noise Level49 dB(A)
Coefficient of Performance (COP)4.00
Indoor Unit Noise Level19 dB (Low)

Summary

Indoor Unit Specifications

Indoor Unit Wiring Diagrams

Indoor Unit Wiring Diagrams (Continued)

Refrigerant System Diagrams

Service Functions and Operation Modes

Timer Short Mode and Remote Controller Pairing

Details for shortening timer settings and pairing remote controllers to specific units.

Service Functions (Continued)

Wi-Fi Interface Setup - WPS Push Mode

Step-by-step guide to connecting the Wi-Fi interface using WPS Push mode.

Wi-Fi Interface Setup - Access Point Mode

Instructions for setting up the Wi-Fi interface using Access Point mode.

Adjusting Room Temperature Correction Value

Procedure to adjust room temperature sensor correction via remote controller.

Microprocessor Control and Remote Controller Functions

Microprocessor Control (Continued)

Weekly Timer Operation Setup

Guide to setting up daily and weekly timers for automatic operation.

Emergency and Test Operation Modes

Procedures for using the emergency operation switch for testing and servicing.

Timer Operation Settings

Instructions for setting ON and OFF timers, including program timer combinations.

Troubleshooting and Battery Replacement

General Troubleshooting Cautions

Essential safety precautions and checks before starting troubleshooting.

Troubleshooting Procedure and Battery Replacement

Steps for diagnosing issues using the operation indicator and replacing remote batteries.

Troubleshooting (Continued)

Failure Mode Recall Function for Indoor/Outdoor Units

How to recall and interpret fault codes indicated by the indoor unit's operation lamp.

Air Purifying Power Failure Mode Recall

Procedure to recall and check for faults related to the air purifying device.

Indoor Unit Failure Mode Recall Function Table

Table detailing abnormal points, conditions, and remedies for indoor unit errors.

Troubleshooting Flowchart for Unit Operation

Diagnostic flow for unit operation issues, including indicator lamp checks.

Wi-Fi Interface Connection Check

Troubleshooting steps for Wi-Fi connectivity issues with the air conditioner.

Troubleshooting Check Table for Unit Operation

Detailed table of abnormalities, symptoms, conditions, and remedies for unit operation.

Troubleshooting Flow for Indoor Fan Motor

Diagnostic flowchart for issues related to the indoor fan motor operation.

Checking Remote Controller and P.C. Board

Procedure to check remote controller functionality and the indoor electronic P.C. board.

Checking Indoor P.C. Board and Fan Motor

Steps to check the indoor electronic P.C. board and fan motor for faults.

Checking Miswiring and Serial Signal Error (MUZ Type)

Diagnostic steps for miswiring and serial signal errors in MUZ type units.

Checking Miswiring and Serial Signal Error (MXZ Type)

Diagnostic steps for miswiring and serial signal errors in MXZ type units.

Check of Air Purifying Power

Procedure to check the air purifying power function and its associated faults.

Air Purifying Power Failure Mode Table

Table for identifying and resolving air purifying power related faults.

Troubleshooting Criteria for Main Parts

Criteria for checking main components like thermistors, fan motors, and vane motors.

Test Point Diagrams and Voltage Specifications

Disassembly Instructions for Indoor Unit

Disassembly Instructions (Continued)

Removing the Wi-Fi Interface and Related Components

Procedure for removing the Wi-Fi interface, electrical cover, and connectors.

Removing Indoor Electrical Box and Air Purifying Device

Steps to remove the indoor electrical box, wires, and the air purifying device.

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