Mitsubishi Electric Mr.Slim MUZ-GC60NA - C2 User Manual

SERVICE MANUAL
CONTENTS
1. PART NAMES AND FUNCTIONS· ···················· 3
2. SPECIFICATION ················································ 4
3. OUTLINES AND DIMENSIONS ························ 8
4. WIRING DIAGRAM ············································ 9
5. REFRIGERANT SYSTEM DIAGRAM ············· 14
6. PERFORMANCE CURVES ····························· 18
7. ACTUATOR CONTROL ··································· 23
8. SERVICE FUNCTIONS ··································· 24
9. TROUBLESHOOTING ····································· 24
10. DISASSEMBLY INSTRUCTIONS ···················· 54
Models
SPLIT-TYPE AIR CONDITIONERS
MUZ-GC25NA -
C1
MUZ-GC35NA -
C1
MUZ-GC35NA -
C2
MUZ-GC50NA -
C1
MUZ-GC50NA -
C2
MUZ-GC60NA -
C1
MUZ-GC60NA -
C2
MUZ-GC71NA -
C1
NOTE:
RoHS compliant products have <G> mark on the spec name plate.
HFC
utilized
R410A
No. OBH482
REVISED EDITION-C
OUTDOOR UNIT
Indoor unit service manual
MSZ-GC•NA Series (OBH481)
MUZ-GC25/35NA
PARTS CATALOG (OBB482)
Please void OBH482 REVISED EDITION-B.
Revision C:
• MUZ-GC35NA -
C2
has been added.

Mitsubishi Electric Mr.Slim MUZ-GC60NA - C2 Specifications

General

Refrigerant	R410A
Power Source	Electric
Outdoor Unit Dimensions (H x W x D)	840 x 880 x 330 mm
Weight (Indoor Unit)	11 kg
Weight (Outdoor Unit)	55 kg

Summary

Part Names and Functions

Specifications

Outlines and Dimensions

Wiring Diagram

Refrigerant System Diagram

Performance Curves

Capacity and Input Curves

Details capacity and input data under various operating conditions for different models.

Capacity and Input Correction by Compressor Frequency

Correction factors for capacity and input based on compressor operational frequency.

Test Run Operation Procedure

Procedure for conducting fixed-frequency test run operations on the unit.

Outdoor Low Pressure and Current

Charts illustrating outdoor low pressure and unit current relative to ambient conditions.

Heat Operation Performance

Performance characteristics and outdoor unit current during heating operation.

Actuator Control

Outdoor Fan Motor Control Logic

Explains the ON/OFF control logic for the outdoor fan motor interlocking with the compressor.

Reversing Valve (R.V.) Coil Control

Details the control states for the R.V. coil during cooling, heating, and dry modes.

Sensor and Actuator Relationships

Mapping of main sensors to actuators (compressor, fan, coils) for operational control.

Service Functions

Change Defrost Setting

Procedure to modify the defrost finish temperature using jumper wires.

Pre-Heat Control Setting

Method to activate pre-heat control for compressor protection in low temperatures.

Troubleshooting

Troubleshooting Cautions

Important safety checks and precautions before performing troubleshooting procedures.

Failure Mode Recall Function

Steps to access and interpret stored failure codes for diagnosis.

Troubleshooting Check Table

Table correlating LED indications with specific failure modes and conditions.

Trouble Criterion of Main Parts

Resistance and voltage criteria for troubleshooting key electrical components.

Troubleshooting Flowcharts

Diagnostic flowcharts for various operational issues and component checks.

Test Point Diagram and Voltage Checks

Diagrams showing test points on PC boards and associated voltage checks.

Disassembly Instructions

MUZ-GC25NA/GC35NA Disassembly

Step-by-step guide for removing cabinets and panels for MUZ-GC25/35NA models.

MUZ-GC50NA/GC60NA/GC71NA Disassembly

Step-by-step guide for removing cabinets and panels for MUZ-GC50/60/71NA models.