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Mitsubishi Heavy Industries Manuals
Air Conditioner
RKX502A007P
Service support handbook
Mitsubishi Heavy Industries RKX502A007P Service Support Handbook
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Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Compatibility
Screenshots
Description
Warning
Rkx502A001C
Hi-Wall Mounted Split Systems - Remote Controls of SRK
Indoor Model
Rkw502A200
Rla502A701R
RC-E5 Layout
Rc-E5 Operation Data
Details of 33 Compressor Protection Status
RC-EX1 & EX1A Layout
Top Screen
RC-EX3 Layout
Rc-Ex Operation Data
Master/ Slave and Group Settings
Master / Slave Settings
Group Settings
Refrigerant Piping Information
Rac Fault Codes
Outdoor Unit
Indoor Unit
Rac Multisplit Fault Codes
Pac Self-Diagnosis Information
Kx Self-Diagnosis Information
Compressor Windings Resistances
Diagnosis
Test Procedure – Inverter Checker Compatibility
Test Procedure – Using an Inverter Checker
Test Procedure – 1PH & 3PH Diode Module
1 Phase Diode Module
3 Phase Diode Module
Test Procedure – 3 PH Transistor Module
Test Procedure – Electronic Expansion Valve
DC Fan Motor Testing
Wiring of DC Fan Motor
DC Fan Motor Type
Type “A” Fan Motor
Type “B / C” Fan Motor
Type ‘D’ Fan Motor
Outline of the Driver Circuit
Resistance of Motor's Coil
Connection Table of Power Lead Wires
Connection Table of Sensor Lead Wires
Trouble Shooting Refrigeration System
Colour of Compressor Oil
Thermistor Temperature & Resistance Characheristics
Remote Control Temperature Sensor (Thc)
Outdoor Air Temperature Sensor (THO-A) PAC & KX
Hi-Wall Mounted Inverter Split Systems
Service Mode Display Procedure
Self-Diagnostic Data
Operation Mode
Error Code Data
Stop Data
Remote Control Information Tables
Sensor Table
Run Light
Service Data Record Form
Service Mode Error Code & Stop Code Table
PFD Box Replacement
Compatibility for PFD BOX
PFD Box Connection
Output from CNT
Applying New PFD Box to KXRE4 Systems
CNT 6 Wire Adaptor
Fitting the Cnt Connector
Remote Indication Relays
Changing Operation of the Cnt Connector, 635566’S, On/Off Control
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Quick Links
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Screenshots
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Remote Control
3
Indoor Model
4
Rkx502A001C
5
Hi-Wall Mounted Split Systems - Remote Controls of Srk
6
Operation Mode
7
Remote Control Information Tables
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SERVICE
SUPPORT
HANDBOOK
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Summarization of Contents
Document Introduction and Safety
MHI e-service App Details
Details the MHI e-service application for error code lookup and system status.
Critical Safety Warnings
Essential safety precautions and warnings for handling MHI products.
Remote Control Operations
SRK Remote Control Identification and Functions
Identifies SRK remote controls and describes button functions.
RC-E5 Remote Control Details
Explains the layout, operation data, and functions of the RC-E5 remote control.
RC-EX Series Remote Control Layouts and Data
Details layouts and operation data for RC-EX1, EX1A, EX3, and RC-EX series.
System Specifications and Configuration
Master / Slave and Group Settings
Configures master/slave units and group settings for MHI systems.
Refrigerant Piping Specifications
Details refrigerant piping specifications for various MHI models.
Sensor Data and Characteristics
Provides characteristic curves for thermistor temperature and resistance.
Fault Diagnosis and Troubleshooting
RAC and Multisplit Fault Codes
Lists and explains fault codes for RAC and multisplit systems.
PAC System Self-Diagnosis
Diagnostic codes and LED indicators for PAC systems.
KX Unit Self-Diagnosis Information
Diagnostic codes and LED patterns for KX indoor units.
Refrigeration System Troubleshooting
Identifies issues based on refrigerant pressure and compressor oil.
Service Mode Operations and Error Codes
Service Mode Operations and Data Recording
Guide to service mode, error codes, stop codes, and data recording.
Error and Stop Code Data Tables
Displays reasons for past errors and stop codes based on settings.
Comprehensive Error and Stop Code Reference
Comprehensive tables listing error and stop codes for various models.
Component Testing Procedures
Compressor and Motor Testing
Procedures for testing compressor windings, transistor modules, and fan motors.
Inverter Checker Compatibility and Use
Details inverter checker compatibility and step-by-step testing procedures.
Expansion Valve and Diode Module Testing
Testing procedures for electronic expansion valves and diode modules.
System Control and Connectivity
PFD Box Management and Wiring
Guides on PFD box compatibility, connection, and wiring for KXRE4.
CNT 6 Wire Adapter Installation and Control
Installation and configuration of CNT 6 wire adapter for remote control.
Cnt Connector Operation Configuration
Configuring On/Off control via indoor PCB or SC-BIKN-E interface.
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