Haier DC Inverter AC F4 Error (How To Fix The F4 Error Code - What It Means, And What Causes It)
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- čas přidán 25. 08. 2024
- Haier DC Inverter AC F4 Error (How To Fix The F4 Error Code - What It Means, And What Causes It). In this video tutorial I will show you how to fix Haier DC Inverter AC F4 Error.
An occurrence of error F4 on the Haier DC Inverter AC indicates an extremely high compressor discharge temperature. The fault usually occurs on the outdoor unit.
The following are some common causes of the error code:
• A defective Electronic Expansion Valve
• A faulty thermistor
Now, let’s look at the best solutions to fix the error:
Assess the cooling system functioning
• Power up the unit using the remote controller and assess the temperatures at the exhaust temperature sensor.
• A steady, quick temperature rise after power-up indicates a faulty cooling system.
• Examine the Electronic Expansion Valve and associated piping system if they leak the coolant.
• Replace the Electronic Expansion Valve if faulty and repair the associated piping where necessary.
Replace the temperature sensor.
• Disconnect the exhaust temperature sensor from the main board and remove it from its slot.
• Replace the sensor if it is broken or if its resistance value deviates significantly from the manufacturer's specifications.
Replace the outdoor unit PCB if neither the sensor nor the cooling system is faulty.
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