NewAir Mode Control / Compressor Enable Failure

Unit runs in fan mode but will not switch into cooling mode when COOL is selected.

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Faulty mode button or keypad, failed compressor relay on main board, incorrect mode logic on control PCB, open temperature sensor preventing cooling

How to Fix / Troubleshooting

Safety: Unplug the unit before accessing the control board.

Steps:

  • Verify settings: Ensure the set temperature is lower than room temperature and that COOL mode is selected.
  • Check keypad: Confirm that other buttons respond normally. If mode button is unresponsive, replace the display/control PCB.
  • Sensor check: A failed room or coil sensor can prevent compressor operation. Test and replace any faulty temperature sensors.
  • Compressor relay: Inspect the main control PCB for a burned or stuck compressor relay. Replace the board if the relay is defective.
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Repair Difficulty

Medium 3/5

Required Part

Main Control PCB
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