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Safety guidelines for unit maintenance, covering prohibitions, warnings, notices, and observations.
Crucial safety precautions for operating the heat pump unit.
Details on outdoor and indoor unit models, specifications, and appearance.
Flowcharts illustrating cooling and heating operational modes.
Explains various control modes like EXV, 4-way valve, and special controls.
Details on setting capacity, defrost mode, operating modes, and fan speed.
Information on forced defrost, refrigerant recovery, and forced operation controls.
Guidance on thermostat functions and unit control.
Electrical schematics for outdoor and indoor unit components.
Identification of components and interfaces on main and motor boards.
Comprehensive list and explanation of unit error codes.
Step-by-step diagnostic procedures for common error codes.
Illustrates the refrigeration system and details the evacuation procedure.
Detailed steps for charging refrigerant into the system.
Procedures for replacing key components like the compressor and 4-way valve.
Step-by-step guides for removing and installing various unit parts.
Data correlating temperature, resistance, and voltage for sensors.
Tables listing R-410A refrigerant properties.
Charts detailing airflow characteristics for indoor units.
List of tools necessary for servicing the unit.
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General