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Mitsubishi Electric SUZ-KA12NA2 User Manual

Mitsubishi Electric SUZ-KA12NA2
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SERVICE MANUAL
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
HFC
utilized
R410A
R410A
Note:
This service manual describes
service data of the outdoor units
only.
PARTS CATALOG (OCB699)
No. OCH699
REVISED EDITION-A
June 2021
Outdoor unit
[Model Name]
SUZ-KA09NA2
SUZ-KA09NAH2
SUZ-KA12NA2
SUZ-KA12NAH2
SUZ-KA15NA2
SUZ-KA15NAH2
[Service Ref.]
SUZ-KA09NA2.MX
SUZ-KA09NAH2.MX
SUZ-KA12NA2.MX
SUZ-KA12NAH2.MX
SUZ-KA15NA2.MX
SUZ-KA15NAH2.MX
SUZ-KA09NA(H)2.MX
Air outlet
Drain outlet
Piping
Drain hose
Air inlet
(back and side)
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 ·············································· 10
8. ACTUATOR CONTROL ····················· 12
9. SERVICE FUNCTION ························ 13
10. TROUBLESHOOTING ······················· 13
11. FUNCTION SETTING ························ 29
12. DISASSEMBLY INSTRUCTIONS ········· 32
Revision:
Some descriptions have
been modified in REVISED
EDITION-A.
OCH699 is void.
MITSUBISHI
ELECTRIC

Questions and Answers:

Mitsubishi Electric SUZ-KA12NA2 Specifications

General IconGeneral
CategoryAir Conditioner
BrandMitsubishi Electric
ModelSUZ-KA12NA2
TypeOutdoor Unit
Cooling Capacity12, 000 BTU/h
Heating Capacity13, 600 BTU/h
Coefficient of Performance (COP)3.7
RefrigerantR410A
Noise Level (Outdoor Unit)49 dB
Power Supply208 / 230V, 60Hz, 1 Phase

Summary

Technical Specifications

Wiring Diagram

Refrigerant System Diagram

Operational Data

Actuator Control Operations

Service Functions and Settings

Troubleshooting Guide

Troubleshooting LED Check Table

A table listing LED blink codes, symptoms, and corresponding remedies for troubleshooting.

Self-Diagnosis Procedure

Instructions for accessing and using the self-diagnosis function via a wired remote controller.

Wireless Remote Self-Diagnosis

Procedure for performing self-diagnosis using a wireless remote controller.

Main Parts Troubleshooting Criteria

Lists main parts and their resistance criteria for troubleshooting.

Troubleshooting Flowcharts

Provides structured troubleshooting steps for common unit faults.

Inverter and Compressor Check

Step-by-step guide to checking the inverter and compressor for faults.

Inverter Open Phase Voltage Check

Procedure to check for balanced AC voltage output from the inverter.

Compressor Operation Diagnosis

Steps to diagnose compressor issues after checking the inverter.

Inverter P.C. Board Troubleshooting

Troubleshooting steps for the inverter P.C. board, including fuse checks and LED indications.

Miswiring and Serial Signal Error Check

Guides on checking for miswiring and serial signal errors between indoor and outdoor units.

Test Point and Voltage Diagrams

Unit Function Settings

Disassembly Instructions

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