Haier · Air Conditioning
The operating voltage supplied to the unit is either too high or too low. This can cause inefficient operation or damage.
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Check the line voltage supplied to the outdoor unit. It should be between 197VAC (running) and 253VAC.
Ensure the wire size for the power supply is correct.
Check for good connections in the supply voltage circuit.
If line voltage from the power company is correct, check the output voltage of the Power Filter.
Contact the power company if voltage is consistently outside operating limits.