Whynter
Control Board / Keypad Interference or Failure
Display works but buttons and settings change randomly or unit turns on/off by itself.
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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
Moisture intrusion into control panel, Stuck keypad contacts, Electrical noise or grounding issue, Failing main or display PCB
How to Fix / Troubleshooting
Safety: Unplug the unit before opening the control area.
- Dry out: If the unit was exposed to high humidity or splashes, unplug and allow the control area to dry for 24 hours.
- Inspect for moisture: Open the control panel and look for condensation or corrosion. Clean with isopropyl alcohol and a soft brush.
- Check grounding: Ensure the ground wire is securely attached to the chassis and that the outlet is properly grounded.
- Replace panel/board: If random behavior continues, replace the control panel / keypad assembly or display control board. If that fails, replace the main control PCB.
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Repair Difficulty
Medium
3/5
Required Part
Display Control Board
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