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SERVICE
SUPPORT
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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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