Mitsubishi SUZ-KA30NA User Manual

SERVICE MANUAL
R410A
Outdoor unit
[Model Name]
SUZ-KA18NA2
SUZ-KA18NAH2
SUZ-KA24NA
SUZ-KA24NAH2
SUZ-KA30NA
SUZ-KA30NAH2
SUZ-KA36NA
SUZ-KA36NAH2
[Service Ref.]
SUZ-KA18NA(H)2.TH
SUZ-KA24NA(H)2.TH
SUZ-KA30NA(H)2.TH
SUZ-KA36NA(H)2.TH
PARTS CATALOG (OCB688)
CONTENTS
1. COMBINATION OF INDOOR AND OUTDOOR UNITS
...
2
2. PART NAMES AND FUNCTIONS
......................
2
3. SPECIFICATION
.................................................
3
4. OUTLINES AND DIMENSIONS
..........................
4
5. WIRING DIAGRAM
............................................
5
6. REFRIGERANT SYSTEM DIAGRAM
................
9
7. DATA
..................................................................
11
8. ACTUATOR CONTROL
.....................................
14
9. SERVICE FUNCTIONS
......................................
15
10. TROUBLESHOOTING
.......................................
15
11. FUNCTION SETTING
........................................
32
12. DISASSEMBLY INSTRUCTIONS
......................
35
Note:
• This manual describes service
data of the outdoor units only.
No. OCH688
REVISED EDITION-A
May 2019
SPLIT-TYPE, AIR CONDITIONERS
SUZ-KA18NA(H)2.TH
Revision:
• Some descriptions
have been modified in
REVISED EDITION-A.
OCH688 is void.

Mitsubishi SUZ-KA30NA Specifications

General

Brand	Mitsubishi
Model	SUZ-KA30NA
Category	Air Conditioner
Language	English

Summary

SPECIFICATION

WIRING DIAGRAM

REFRIGERANT SYSTEM DIAGRAM

SERVICE FUNCTIONS

TROUBLESHOOTING

CAUTIONS ON TROUBLESHOOTING

TROUBLE SHOOTING CHECK TABLE

Lists symptoms, check codes, conditions, and remedies for troubleshooting.

HOW TO PROCEED SELF-DIAGNOSIS

Self-diagnosis Wired Remote Controller

Remote controller check Wired Remote Controller

Self-diagnosis Wireless Remote Controller

TROUBLE CRITERION OF MAIN PARTS

TROUBLESHOOTING FLOW

Check of inverter compressor

Flowchart for checking the inverter and compressor.

Check of open phase

Check of compressor

Check of compressor winding

How to check the compressor winding resistance.

Check of compressor operation time

How to check compressor operation time and detect overcurrent.

Check of compressor start failure

Procedure to diagnose compressor start failure.

Check of outdoor thermistors

How to check outdoor thermistor resistance and connectivity.

Check of R.V. coil

Steps to check the R.V. coil for defects and voltage.

Check of outdoor fan motor

How to check the outdoor fan motor's resistance and voltage.

Check of power supply

Procedure to check the main power supply and its voltage.

Check of LEV

Check of inverter P.C. board

How to check miswiring and serial signal error

Check the defrost heater base pan heater

Check of outdoor refrigerant circuit

TEST POINT DIAGRAM AND VOLTAGE

FUNCTION SETTING

UNIT FUNCTION SETTING BY THE REMOTE CONTROLLER

Selecting functions using the wired remote controller

DISASSEMBLY INSTRUCTIONS