Mitsubishi Electric MSZ-GS12NA - U1 User Manual

Models
MSZ-GS06NA
-
U1
MSY-GS09NA
-
U1
MSZ-GS09NA
-
U1
MSY-GS12NA
-
U1
MSZ-GS12NA
-
U1
MSY-GS15NA
-
U1
MSZ-GS15NA
-
U1
MSY-GS18NA
-
U1
MSZ-GS18NA
-
U1
MSY-GS24NA
-
U1
MSZ-GS24NA
-
U1
MSY-GS30NA
-
U1
MSZ-GS30NA
-
U1
MSY-GS30NA2
-
U1
MSZ-GS30NA2
-
U1
MSY-GS36NA
-
U1
MSZ-GS36NA
-
U1
MSY-GS36NA2
-
U1
MSZ-GS36NA2
-
U1
SERVICE MANUAL
CONTENTS
1. TECHNICAL CHANGES· ·····························2
2. PART NAMES AND FUNCTIONS ··················3
3. SPECIFICATION ········································7
4. OUTLINES AND DIMENSIONS ···················10
5. WIRING DIAGRAM ···································12
6. REFRIGERANT SYSTEM DIAGRAM ···········15
7. SERVICE FUNCTIONS ······························17
8. MICROPROCESSOR CONTROL ·················20
9. TROUBLESHOOTING ······························· 34
10. DISASSEMBLY INSTRUCTIONS ················· 59
No. OBH874
REVISED EDITION-A
INDOOR UNIT
Outdoor unit service manual
MUZ-GS•NA/NAH, MUY-GS•NA Series (OBH875)
MXZ-C•NA, MXZ-C•NAHZ Series (OCH573)
PARTS CATALOG (OBB874)
OBH874 is void.
Revision A:
• MSZ-GS06/09/12/15/18/24NA -
U1
,
MSY-GS09/12/15/18/24NA -
U1
,
MSZ-GS30/36NA2 -
U1
and
MSY-GS30/36NA2 -
U1
have been added.
MSZ-GS18NA
MSY-GS18NA

Mitsubishi Electric MSZ-GS12NA - U1 Specifications

General

Brand	Mitsubishi Electric
Model	MSZ-GS12NA - U1
Category	Air Conditioner
Language	English

Summary

SERVICE FUNCTIONS

TIMER SHORT MODE

AUTO RESTART FUNCTION

Functionality and disabling of automatic restart after power loss.

MICROPROCESSOR CONTROL

TIMER OPERATION (MSZ-GS30/36NA MSY-GS30/36NA)

TIMER OPERATION (MSZ-GS06/09/12/15/18/24NA...)

WEEKLY TIMER OPERATION

EMERGENCY TEST OPERATION

Emergency operation, test run, and related functions.

TROUBLESHOOTING

CAUTIONS ON TROUBLESHOOTING

Important precautions before performing troubleshooting procedures.

FAILURE MODE RECALL FUNCTION

Recalling and checking memorized abnormal conditions.

INSTRUCTION OF TROUBLESHOOTING

Guides for troubleshooting common faults and indicators.

TROUBLESHOOTING CHECK TABLE

A table listing abnormal points, conditions, and remedies.

TROUBLESHOOTING CRITERION OF MAIN PARTS

Resistance and voltage checks for key components.

TROUBLESHOOTING FLOWCHARTS

Step-by-step troubleshooting flows for common issues.

TEST POINT DIAGRAM AND VOLTAGE

Diagrams and voltage specifications for troubleshooting.