Mitsubishi SUZ-KA36NA 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-KA36NA Specifications

General

Brand	Mitsubishi
Model	SUZ-KA36NA
Category	Air Conditioner
Language	English

Summary

3 SPECIFICATION

5 WIRING DIAGRAM

6 REFRIGERANT SYSTEM DIAGRAM

MAX. REFRIGERANT PIPING LENGTH and MAX. HEIGHT DIFFERENCE

7 DATA

8 ACTUATOR CONTROL

9 SERVICE FUNCTIONS

10 TROUBLESHOOTING

10-1. CAUTIONS ON TROUBLESHOOTING

Outlines important safety precautions and checks before performing troubleshooting.

10-2. TROUBLE SHOOTING CHECK TABLE

A table listing symptoms, check codes, conditions, and remedies for various unit malfunctions.

10-3. HOW TO PROCEED "SELF-DIAGNOSIS"

10-3-2. Remote controller check

10-3-3. Self-diagnosis <Wireless remote controller>

10-4. TROUBLE CRITERION OF MAIN PARTS

10-5. TROUBLESHOOTING FLOW

Step-by-step guides for diagnosing and resolving various unit malfunctions.

A How to check inverter/compressor

Step-by-step guide to check the inverter and compressor for potential issues.

B Check of open phase

Procedure to check for open phase issues within the inverter system.

D Check of compressor winding

Instructions for checking the resistance of compressor windings.

E Check of compressor operation time

Method to measure the compressor's operation time before stopping due to overcurrent.

F Check of compressor start failure

Procedure to diagnose and address compressor start failure issues.

G Check of outdoor thermistors

① Check of outdoor fan motor

Detailed steps to check the outdoor fan motor for proper operation and voltage.

J Check of power supply

Procedure for checking the power supply and voltage to the unit.

K Check of LEV

L Check of inverter P.C. board

Steps to check the inverter P.C. board, including fuse and LED indications.

M How to check miswiring and serial signal error

O Check of outdoor refrigerant circuit

10-6. TEST POINT DIAGRAM AND VOLTAGE

11 FUNCTION SETTING

11-1. UNIT FUNCTION SETTING BY THE REMOTE CONTROLLER

11-1-1. Selecting functions using the wired remote controller

12 DISASSEMBLY INSTRUCTIONS