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General| Brand | Haier |
|---|---|
| Model | AU48NAIEAA |
| Category | Air Conditioner |
| Language | English |
Highlights critical safety warnings regarding abnormal phenomena, dismantling the outdoor unit, and maintenance procedures.
Emphasizes electrical safety, proper installation environment, handling damp hands, fuse usage, and discharge pipe connection.
Covers AUTO FAN, auto run, cooling/heating modes, and temperature controls for cabinet indoor units.
Explains defrosting conditions, operation, quit conditions, and crankcase heater operation.
Covers anti-freeze protection for indoor evaporators in cooling/dry modes.
Details overheat and overcurrent protection mechanisms in heating and non-heating modes, including error codes.
Describes high/low pressure protection in cooling mode and low pressure protection specifics.
Provides a flowchart for troubleshooting pressure protection issues, including checks for switches and piping.
Offers a troubleshooting guide for sensor failures, involving wiring checks, resistance, and voltage measurements.
Guides troubleshooting for low pressure protection, checking switches, valves, fan operation, and refrigerant levels.
Details troubleshooting steps for high pressure protection, including checks on switches, piping, fan, and refrigerant charge.
Provides troubleshooting steps for communication errors between indoor and outdoor units, checking wiring and PCBs.
Outlines troubleshooting for high current protection in 3-phase models, checking voltage, wiring, and compressor condition.
Details troubleshooting for overcurrent protection in single-phase models, checking voltage, wiring, capacitor, and pressure.
Provides troubleshooting steps for temperature cutoff protection, checking 4-way valve, refrigerant, sensors, and PCB.
Guides troubleshooting for drain system faults, checking for clogs, pump motor, float switch, and PCB.
Offers troubleshooting for indoor fan motor faults, checking power supply, capacitor, winding, and control circuits.
Outlines the initial steps for a service call, including fault confirmation and checking operating conditions.
