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Haier Air Conditioner won't run

If your Haier air conditioner won't run, start with the parts that control power to the unit’s main components. The most likely problem is a failed control board, which regulates voltage to the compressor and fan motor and can keep the AC from starting at all. A faulty main control board can cause the same issue, so confirm other parts before replacing it. If the unit has power but the buttons or display do not respond correctly, the user control and display board may be preventing operation. A bad selector switch can also stop the fan motor from turning on, especially if the fan runs intermittently when you press controls or if you see arcing or smoke at the switch. Before replacing parts, check for an incoming power problem, including a tripped breaker, blown fuse, loose plug, or an air conditioner that has no power. Whether your Haier AC won't turn on or your window air conditioner is not turning on, enter your model number on RepairClinic.com to find the exact replacement part for your specific air conditioner.

01 - Haier Air Conditioner Control Board

The control board regulates the voltage to the compressor and the fan motor. If the control board fails, some components will not function properly or will not work at all. Control boards are often misdiagnosed; make sure to check more commonly defective parts first before replacing the control board.

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Highly Likely

02 - Haier Air Conditioner Main Control Board

The main control board regulates the voltage to the compressor and the fan motor. If the control board fails, some components will not function properly or will not work at all. Control boards are often misdiagnosed; make sure to check more commonly defective parts first before replacing the main control board.

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Highly Likely

03 - Haier Air Conditioner User Control and Display Board

The user control and display board allows the user to operate the unit by selecting fan speeds and cooling temperatures. If the board is defective, the air conditioner may be unable to run. If you've confirmed power it reaching the unit, it's possible the user control and display board is malfunctioning and will need to be replaced.

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Highly Likely

04 - Haier Air Conditioner Selector Switch

The selector switch directs voltage to the fan motor. If the switch is faulty, the fan motor may not turn on and the air conditioner won't run. To determine if the selector switch is at fault, try making selections on the air conditioner’s control board. If the fan runs intermittently after you press a button, replace the selector switch. Additionally, if there is any arcing or smoke coming from the selector switch, replace it.

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Common

05 - Incoming Power Problem

Check to see if there is power to the air conditioner. One or more indicator lights on the control board should be illuminated. If there is no power to the air conditioner, check to see if a circuit breaker has tripped or a fuse has blown. Confirm the unit is plugged in and has power.

Common

Frequently Asked Questions

Why won't my Haier air conditioner turn on?

What should I check first if my window air conditioner is not turning on?

Can a bad selector switch keep a Haier AC from running?

Should I replace the control board if my Haier air conditioner has no power?

How do I find the right replacement part for my Haier air conditioner?

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