Soleus Air Erratic Control / Electrical Interference

Display works but settings randomly change or unit turns on/off by itself.

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.

Possible Causes

Faulty control PCB, Moisture or condensation on control board, Electrical noise from nearby appliances, Stuck keypad

Safety: Unplug the unit before opening the control area.

Eliminate interference: Move high-power devices (microwaves, large motors) away from the same circuit if possible.
Dry and clean board: Inspect the control board for signs of moisture. If present, dry thoroughly and clean with isopropyl alcohol.
Check keypad: Ensure no buttons are physically stuck or pressed in. Replace the keypad if it appears damaged.
Replace PCB: If random behavior continues, replace the main control board with a Soleus Air OEM part.

Medium 3/5

Main Control Board

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