Mitsubishi Electric MS-GF50VA-E1 User Manual

CONTENTS
1. TECHNICAL CHANGES ···································2
2. PART NAMES AND FUNCTIONS ·····················3
3. SPECIFICATION ················································5
4. NOISE CRITERIA CURVES ······························6
5. OUTLINES AND DIMENSIONS ························8
6. WIRING DIAGRAM ············································9
7. REFRIGERANT SYSTEM DIAGRAM ·············10
8. SERVICE FUNCTIONS ···································12
9. MICROPROCESSOR CONTROL ···················14
10. TROUBLESHOOTING ·····································21
11. DISASSEMBLY INSTRUCTIONS ····················35
SPLIT-TYPE AIR CONDITIONERS
Outdoor unit service manual
MU-GF·VA Series (OBH622)
SERVICE MANUAL
INDOOR UNIT
PARTS CATALOG (OBB621)
NOTE:
RoHS compliant products have <G> mark on the spec name plate.
Models
MS-GF20VA
-
E1
MS-GF25VA
-
E1
MS-GF35VA
-
E1
MS-GF50VA
-
E1
MS-GF60VA
-
E1
MS-GF80VA
-
E1
No. OBH621
REVISED EDITION-A
Please void OBH621.
Revision A:
• MS-GF50VA-
E1
, MS-GF60VA-
E1
and
MS-GF80VA-
E1
have been added.

Mitsubishi Electric MS-GF50VA-E1 Specifications

General

Brand	Mitsubishi Electric
Model	MS-GF50VA-E1
Category	Air Conditioner
Language	English

Summary

TECHNICAL CHANGES

PART NAMES AND FUNCTIONS

ACCESSORIES

Lists and describes the accessories included with the indoor unit models.

SPECIFICATION

NOISE CRITERIA CURVES

OUTLINES AND DIMENSIONS

WIRING DIAGRAM

REFRIGERANT SYSTEM DIAGRAM

SERVICE FUNCTIONS

TIMER SHORT MODE

Explains how to shorten the set time for service purposes.

P.C. BOARD MODIFICATION FOR INDIVIDUAL OPERATION

Details modifications for using multiple indoor units with separate remote controllers.

AUTO RESTART FUNCTION

Describes the auto restart feature and how to disable it.

MICROPROCESSOR CONTROL

WIRELESS REMOTE CONTROLLER

Overview of the wireless remote controller layout and buttons.

INDOOR UNIT DISPLAY SECTION

Explains the operation indicator lamp and its states.

COOL OPERATION

Step-by-step guide for operating the unit in COOL mode.

DRY OPERATION

Step-by-step guide for operating the unit in DRY mode.

FAN OPERATION

Steps for operating the unit in FAN mode only.

I FEEL CONTROL OPERATION

Details on the 'I FEEL CONTROL' mode and temperature settings.

AUTO VANE OPERATION

How to use the auto vane function for airflow direction.

TIMER OPERATION

Setting and releasing ON/OFF timers for unit operation.

EMERGENCY/TEST OPERATION

Procedure for test run and emergency operation.

3-MINUTE TIME DELAY OPERATION

Explains the compressor protection time delay.

TROUBLESHOOTING

CAUTIONS ON TROUBLESHOOTING

Safety precautions and initial checks before troubleshooting.

FAILURE MODE RECALL FUNCTION

How to recall and interpret failure codes.

Indoor unit failure mode table

Table detailing indoor unit failure modes and remedies.

INSTRUCTION OF TROUBLESHOOTING

Flowchart for diagnosing unit malfunctions.

TROUBLESHOOTING CHECK TABLE

List of symptoms, conditions, and remedies for common issues.

TROUBLE CRITERION OF MAIN PARTS

Criteria for checking main parts like thermistors and motors.

TROUBLESHOOTING FLOW

Diagnostic flow for indoor fan motor issues.

Check of remote controller and indoor electronic control P.C. board

Troubleshooting steps for remote control and P.C. board issues.

Check of indoor electronic control P.C. board and indoor fan motor

Diagnostic procedures for P.C. board and fan motor faults.

Electromagnetic noise enters into TV sets or radios

Troubleshooting guide for electromagnetic interference issues.

TEST POINT DIAGRAM AND VOLTAGE

Diagrams and voltage references for testing electronic components.

DISASSEMBLY INSTRUCTIONS

Removing the panel

Procedure for removing the front panel of the indoor unit.

Removing the indoor electronic control P.C. board

Steps to remove the indoor electronic control P.C. board.

Remove the indoor power P.C. board

Procedure for removing the indoor power P.C. board.

Removing the nozzle assembly

Instructions for removing the nozzle assembly.

Removing the horizontal vane motor

Steps to remove the horizontal vane motor unit.

Removing the indoor fan motor

Procedure for removing the indoor fan motor.

Removing the indoor electronic control P.C. board, the power monitor receiver SW P.C. board and the indoor terminal P.C. board

Steps to remove multiple P.C. boards and receiver.

Removing the indoor electrical box

Instructions for removing the indoor electrical box.

Removing the vertical vane motor unit

Steps to remove the vertical vane motor unit.

Removing the horizontal vane motor

Procedure for removing the horizontal vane motor.

Removing the water cut, the indoor fan motor

Steps to remove water cut, fan motor, and coil thermistor.