Mitsubishi Electric MUZ-GS15NA-U1 User Manual

PARTS CATALOG (OBB875)
CONTENTS
1. TECHNICAL CHANGES ······························2
2. PART NAMES AND FUNCTIONS ··················3
3. SPECIFICATION ········································4
4. OUTLINES AND DIMENSIONS ··················· 10
5. WIRING DIAGRAM ··································· 12
6. REFRIGERANT SYSTEM DIAGRAM ··········· 21
7. DATA ······················································26
8. ACTUATOR CONTROL ····························· 57
9. SERVICE FUNCTIONS ······························58
10. TROUBLESHOOTING ······························· 59
11. DISASSEMBLY INSTRUCTIONS ················· 87
HFC
utilized
R410A
OUTDOOR UNIT
SERVICE MANUAL
No. OBH875
REVISED EDITION-B
Indoor unit service manual
MSZ-GS•NA, MSY-GS•NA Series (OBH874)
OBH875 REVISED EDITION-A is void.
Revision B:
• MUZ-GS09/12/15/18/24NA -
U1
,
MUZ-GS09/12/15/18/24NAH -
U1
,
MUZ-GS09/12/15/18/24NAHZ -
U1
,
MUY-GS09/12/15/18/24NA -
U1
,
MUZ-GS30/36NA2 -
U1
, MUZ-GS30/36NAH2 -
U1
and MUY-GS30/36NA2 -
U1
have been added.
MUZ-GS18/24/30/36NA MUZ-GS18/24/30/36NAH
MUZ-GS18/24NAHZ MUY-GS18/24/30/36NA
MUZ-GS30/36NA2 MUZ-GS30/36NAH2
MUY-GS30/36NA2
Models
MUZ-GS09NA -
U1
MUZ-GS18NAH -
U1
MUY-GS09NA -
U1
MUZ-GS12NA -
U1
MUZ-GS24NAH -
U1
MUY-GS12NA -
U1
MUZ-GS15NA -
U1
MUZ-GS30NAH -
U1
MUY-GS15NA -
U1
MUZ-GS18NA -
U1
MUZ-GS30NAH2 -
U1
MUY-GS18NA -
U1
MUZ-GS24NA -
U1
MUZ-GS36NAH -
U1
MUY-GS24NA -
U1
MUZ-GS30NA -
U1
MUZ-GS36NAH2 -
U1
MUY-GS30NA -
U1
MUZ-GS30NA2 -
U1
MUZ-GS09NAHZ -
U1
MUY-GS30NA2 -
U1
MUZ-GS36NA -
U1
MUZ-GS12NAHZ -
U1
MUY-GS36NA -
U1
MUZ-GS36NA2 -
U1
MUZ-GS15NAHZ -
U1
MUY-GS36NA2 -
U1
MUZ-GS09NAH -
U1
MUZ-GS18NAHZ -
U1
MUZ-GS12NAH -
U1
MUZ-GS24NAHZ -
U1
MUZ-GS15NAH -
U1

Mitsubishi Electric MUZ-GS15NA-U1 Specifications

General

Category	Air Conditioner
Brand	Mitsubishi Electric
Model	MUZ-GS15NA-U1
Cooling Capacity	15, 000 BTU/h
Refrigerant	R410A
Voltage	208/230V
Operating Temperature (Cooling)	14°F to 115°F
Power Supply	208/230V

Summary

1 TECHNICAL CHANGES

5 WIRING DIAGRAM

6 REFRIGERANT SYSTEM DIAGRAM

8 ACTUATOR CONTROL

8-3. RELATION BETWEEN MAIN SENSOR AND ACTUATOR

9 SERVICE FUNCTIONS

10 TROUBLESHOOTING

10-1. CAUTIONS ON TROUBLESHOOTING

Important precautions and checks to perform before troubleshooting.

10-2. FAILURE MODE RECALL FUNCTION

Procedure to recall and interpret stored failure mode information.

10-3. TROUBLESHOOTING CHECK TABLE

A table listing symptoms, LED indications, abnormal points, and remedies.

10-4. TROUBLESHOOTING CRITERION OF MAIN PARTS

Resistance criteria for checking major components like thermistors, compressor, and fan motor.

10-5. TROUBLESHOOTING FLOW

Flowcharts for diagnosing specific issues like inverter/compressor problems.

10-6. TEST POINT DIAGRAM AND VOLTAGE

Diagrams showing test points and voltage readings on the inverter P.C. board.

11 DISASSEMBLY INSTRUCTIONS