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Mitsubishi Electric MXZ-8C48NAHZ2 User Manual

Mitsubishi Electric MXZ-8C48NAHZ2
54 pages
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TECHNICAL & SERVICE MANUAL
CONTENTS
1. REFERENCE MANUAL
......................
2
2. SAFETY PRECAUTION ......................2
3. PARTS NAMES AND FUNCTIONS
.....
6
4. SPECIFICATIONS
...............................
7
5. OUTLINES AND DIMENSIONS
...........
9
6. WIRING DIAGRAM
............................
10
7.
REFRIGERANT SYSTEM DIAGRAM
.....
11
8. TROUBLESHOOTING
.......................
12
9. SPECIAL FUNCTION
........................
26
10. 4-WAY AIRFLOW SYSTEM
...............
27
11. DISASSEMBLY PROCEDURE
..........
29
12. REMOTE CONTROLLER
..................
33
Indoor unit
[Model Name] [Service Ref.]
SLZ-KF09NA1
SLZ-KF12NA1
SLZ-KF15NA1
SLZ-KF18NA1
INDOOR UNIT
Model name
indication
SLZ-KF09NA1
SLZ-KF12NA1
SLZ-KF15NA1
SLZ-KF18NA1
WIRED REMOTE CONTROLLER
(Option)
PARTS CATALOG (TCB118)
SPLIT-SYSTEM HEAT PUMP
WIRELESS REMOTE
CONTROLLER
(Option)
No. TCH118
April 2023
MENU
ON
OFF
RETURN
SELECT
HOLD

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Mitsubishi Electric MXZ-8C48NAHZ2 Specifications

General IconGeneral
TypeHeat Pump
SeriesMXZ
RefrigerantR410A
Voltage208/230V
Maximum Number of Connectable Indoor Units8
Cooling Capacity48, 000 BTU/h
Heating Capacity54, 000 BTU/h
Compressor TypeInverter

Summary

SAFETY PRECAUTION

ALWAYS OBSERVE FOR SAFETY

General safety guidelines and precautions to follow before and during service operations.

WARNINGS FOR SERVICE

CAUTIONS FOR SERVICE

SERVICE TOOLS FOR R410A REFRIGERANT

REFRIGERANT SYSTEM DIAGRAM

TROUBLESHOOTING

GENERAL TROUBLESHOOTING SUMMARY

Summarizes check codes and actions for reoccurring or non-reoccurring troubles.

MALFUNCTION DIAGNOSIS METHOD BY REMOTE CONTROLLER

Explains how to use the remote controller for self-diagnosis and error code retrieval.

INDOOR UNIT ERROR CODES

Lists error codes detected by the indoor unit, their symptoms, and potential causes.

EXTERNAL UNIT ERROR CODES

Lists error codes detected by external units (outdoor), their symptoms, and potential causes.

SELF-DIAGNOSIS ACTION TABLE

TROUBLESHOOTING OF PROBLEMS

TEST POINT DIAGRAM

INDOOR CONTROLLER BOARD TEST POINTS

Details specific test points on the indoor controller board for electrical diagnostics.

TROUBLESHOOTING OF MAIN PARTS

DC FAN MOTOR CHECK

Outlines the procedure for checking the DC fan motor and its associated controller board.

DISASSEMBLY PROCEDURE

REMOVING THE FAN MOTOR (MF)

Steps to remove the turbo fan, fan motor, and motor mounts.

REMOVING DRAIN PUMP AND FLOAT SWITCH

Instructions for removing the drain pump and float switch, including connectors and hoses.

ERROR INFORMATION

SERVICE MENU

TEST RUN

FUNCTION SETTING

ERROR HISTORY

SELF-DIAGNOSIS

REMOTE CONTROLLER CHECK

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