Mitsubishi Electric MS-GK36VAT User Manual

Models
MS-GK24VA
-
KU1
,
KU2
,
KU2
U
MS-GK30VAT
-
KU1
,
KU2
,
KU2
U
MS-GK36VAT
-
KU1
,
KU2
,
KU2
U
Outdoor unit service manual
MU-GK∙VA(T) Series (OBH735)
INDOOR UNIT
PARTS CATALOG (OBB734)
NOTE:
RoHS compliant products have <G> mark on the spec name plate.
TM
SERVICE MANUAL
No. OBH734
REVISED EDITION-B
MS-GK24VA
MS-GK30VAT
CONTENTS
1. TECHNICAL CHANGES ······························2
2. PART NAMES AND FUNCTIONS ··················3
3. SPECIFICATION ········································5
4. OUTLINES AND DIMENSIONS ·····················6
5. WIRING DIAGRAM ·····································8
6. REFRIGERANT SYSTEM DIAGRAM ·············9
7. SERVICE FUNCTIONS ······························ 11
8. MICROPROCESSOR CONTROL ················ 13
9. TROUBLESHOOTING ······························· 21
10. DISASSEMBLY INSTRUCTIONS ················· 36
Revision B:
• MS-GK24VA-
KU2
U, MS-GK30/36
VAT-
KU2
U have been added.
OBH734 REVISED EDITION-A is void.

Mitsubishi Electric MS-GK36VAT Specifications

General

Mounting	Wall Mounted
Cooling Capacity	3.6 kW
Energy Efficiency Ratio (EER) Cooling	3.21
Power Supply	220-240V, 50Hz
Refrigerant	R32
Indoor Unit Dimensions (W x H x D)	798 x 295 x 232 mm
Type	Split System
Weight (Outdoor Unit)	30 kg

Summary

Technical Changes

Service Functions

PC Board Modification for Individual Operation

Auto Restart Function

Details the auto restart function and its disabling procedure via PC board modification.

Microprocessor Control

Wireless Remote Controller Overview

Identifies buttons and displays on the wireless remote controller for various models.

Emergency and Delay Operations

Emergency/Test Operation

Covers the use of the EMERGENCY OPERATION switch for testing and emergency situations.

Troubleshooting Introduction

Troubleshooting Cautions

Failure Mode Recall Function

Describes how to recall and interpret stored error codes indicated by the unit's lamps.

Troubleshooting Check Table

Error Codes and Remedies

Lists specific error indicators (lamp flashes) and their corresponding causes and remedies.

Trouble Criteria of Main Parts

Part Resistance and Check Methods

Lists resistance values and check methods for key components like thermistors and motors.

Troubleshooting Flow (Fan Motor)

Indoor Fan Motor Diagnosis

A step-by-step guide to diagnose and resolve indoor fan motor issues.

Remote Controller & PC Board Checks (MS-GK24VA/GK30VAT)

Remote Controller & PC Board Checks (MS-GK36VAT)

Remote Controller & Basic PC Board Checks

Guides on checking remote controller functionality and basic indoor electronic control board for MS-GK36VAT.

Indoor PC Board & Fan Motor Checks (MS-GK24VA/GK30VAT)

Indoor PC Board & Fan Motor Checks (MS-GK36VAT)

PC Board and Fan Motor Diagnostics

Detailed checks for the indoor electronic control PC board and indoor fan motor for MS-GK36VAT.

Miswiring and Serial Signal Error Check (MS-GK36VAT)

Miswiring and Serial Signal Diagnosis

Disassembly Instructions

MS-GK24VA/MS-GK30VAT Disassembly

MS-GK36VAT Disassembly Instructions

MS-GK36VAT Disassembly Procedures