Mitsubishi Electric SUZ-KA30NAHZ User Manual

SERVICE MANUAL
CONTENTS
1. REFERENCE MANUAL ····························· 2
2. SAFETY PRECAUTION ·····························2
3. FEATURES ············································· 6
4. SPECIFICATIONS ···································· 7
5. DATA······················································ 9
6. OUTLINES AND DIMENSIONS ················· 13
7. WIRING DIAGRAM ································· 15
8. WIRING SPECIFICATIONS ······················ 17
9. REFRIGERANT SYSTEM DIAGRAM ············ 20
10. TROUBLESHOOTING ····························· 23
11. EASY MAINTENANCE FUNCTION ············ 74
12. FUNCTION SETTING ······························ 76
13. MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER ·· 78
14. DISASSEMBLY PROCEDURE ·················· 87
15. REMOTE CONTROLLER ························100
No. OCH754
REVISED EDITION-A
R410A
December 2020
Note:
• This manual describes
service data of the
outdoor units only.
PARTS CATALOG (OCB754)
[Model Name] [Service Ref.]
SUZ-KA24NAHZ
SUZ-KA24NAHZ
SUZ-KA30NAHZ
SUZ-KA30NAHZ
SUZ-KA36NAHZ
SUZ-KA36NAHZ
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
SUZ-KA30NAHZ
SUZ-KA36NAHZ
SUZ-KA24NAHZ
Revision:
• Some descriptions
have been modified in
REVISED EDITION-A.
OCH754 is void.

Mitsubishi Electric SUZ-KA30NAHZ Specifications

General

Brand	Mitsubishi Electric
Model	SUZ-KA30NAHZ
Category	Air Conditioner
Language	English

Summary

SAFETY PRECAUTION

2-1. ALWAYS OBSERVE FOR SAFETY

General safety rules to follow before and during repair.

2-2. CAUTIONS RELATED TO NEW REFRIGERANT

Precautions for handling R410A refrigerant and related equipment.

2-3. CAUTIONS FOR REFRIGERANT PIPING WORK

Specific precautions for refrigerant piping installation and materials.

SPECIFICATIONS

DATA

WIRING SPECIFICATIONS

8-1. INDOOR UNIT POWER SUPPLIED FROM OUTDOOR UNIT

Wiring specifications for indoor units powered by outdoor units.

8-2. SEPARATE INDOOR UNIT/OUTDOOR UNIT POWER SUPPLIES

Wiring specifications for separate indoor and outdoor unit power supplies.

8-3. INDOOR – OUTDOOR CONNECTING CABLE

REFRIGERANT SYSTEM DIAGRAM

9-1. REFRIGERANT COLLECTING (PUMP DOWN)

Procedure for safely collecting refrigerant when relocating or disposing of units.

9-2. START AND FINISH OF TEST RUN

TROUBLESHOOTING

10-1. TROUBLESHOOTING

Summary of actions based on check codes and reoccurrence of trouble.

10-2. CHECK POINT UNDER TEST RUN

Pre-test run checks, error information, history, and self-diagnosis.

10-3. SELF-DIAGNOSIS ACTION TABLE

Table of causes and actions for self-diagnosis abnormalities.

10-4. TROUBLESHOOTING BY INFERIOR PHENOMENA

Troubleshooting common phenomena and their causes/countermeasures.

10-5. HOW TO CHECK THE PARTS

EASY MAINTENANCE FUNCTION

11-1. SMOOTH MAINTENANCE

FUNCTION SETTING

12-1. UNIT FUNCTION SETTING BY THE REMOTE CONTROLLER

12-2. SELECTING FUNCTIONS USING THE REMOTE CONTROLLER

MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER

13-1. HOW TO "MONITOR THE OPERATION DATA" BY THE REMOTE CONTROLLER

DISASSEMBLY PROCEDURE

Removing the Service Panel and Top Panel

Removing the Fan Motor (MF1)

Removing the Electrical Parts Box

Removing Thermistors (TH3, TH6, TH7, TH33, TH4)

Removing the 4-Way Valve Coil and LEV Coils (LEV-A, B, C)

Removing the Compressor (MC)

REMOTE CONTROLLER

15-1. REMOTE CONTROLLER FUNCTIONS

15-2. ERROR INFORMATION

How to check and reset error codes on the remote controller.

Checking Error Information

15-3. SERVICE MENU

Accessing and using the service menu, including password entry.

15-4. TEST RUN (PAR-40MAA)

Procedure for performing test runs and checking auto vane.

15-4. TEST RUN (PAR-SL97A-E)

15-4. TEST RUN (PAR-SL100A-E)

15-5. FUNCTION SETTING (PAR-40MAA)

How to set functions like refrigerant address and unit number.

15-5. FUNCTION SETTING (PAR-SL97A-E)

15-5. FUNCTION SETTING (PAR-SL100A-E)

15-6. ERROR HISTORY

Procedure to view and delete recorded error history.

15-7. SELF-DIAGNOSIS (PAR-40MAA)

How to perform self-diagnosis and reset error history.

Malfunction-Diagnosis Method at Maintenance Service (PAR-SL97A-E)

Malfunction diagnosis procedure for PAR-SL97A-E when errors occur.

Malfunction-Diagnosis Method at Maintenance Service (PAR-SL100A-E)

Malfunction diagnosis procedure for PAR-SL100A-E when errors occur.

15-8. REMOTE CONTROLLER CHECK

Procedure to diagnose and check the remote controller's functionality.

15-9. SMOOTH MAINTENANCE

15-10. REQUEST CODE