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General| Brand | Haier |
|---|---|
| Model | AU04IFPERA |
| Category | Air Conditioner |
| Language | English |
Details energy-saving aspects like DC inverter compressor, fan motor, and heat exchanger.
Details critical safety warnings and cautions for installation and maintenance.
Details the process and precautions for connecting refrigerant pipes.
Details the step-by-step process for performing a leakage test.
Explains the procedure for evacuating the system after leakage testing.
Details how to charge additional refrigerant and relevant calculations.
Lists crucial checks to perform before starting the unit for the first time.
Lists parameters displayed on the digital tube via rotary switch selection.
Explains the sequence and conditions for compressor startup.
Details how compressor output is controlled based on ambient temp in cooling mode.
Details how compressor output is controlled based on piping length and ambient temp in heating mode.
Lists the conditions that trigger the defrosting cycle.
Details the actions taken during defrosting mode.
Specifies the conditions under which defrosting will terminate.
Outlines the conditions for initiating oil return in cooling mode.
Explains oil return control logic for heating mode.
Specifies conditions to end oil return in cooling mode.
Details quit conditions for heating oil return with 4-way valve reversing.
Details quit conditions for heating oil return without 4-way valve reversing.
Covers failures related to temperature sensors (Te, Ta, Ts, Td).
Addresses issues with communication between indoor and outdoor units.
Details failures related to high/low pressure sensors (Pd, Ps).
Describes failures associated with the high-pressure switch (HPS).
Explains failures related to the 4-way valve reversing operation.
Addresses low pressure and high compression ratio problems.
Details failures where high pressure exceeds limits.
Covers compressor current protection and IPM module issues.
Details compressor control failures and temperature issues.
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