Honeywell
No Power / Dead Unit
Dehumidifier will not power on at all; no lights or display.
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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
Blown internal fuse on control board, Faulty power cord, Failed main control board, Tripped GFCI outlet or breaker
How to Fix / Troubleshooting
Safety: Unplug the unit before opening. If you smell burning or see melted plastic, do not attempt repair—contact a professional.
Steps:
- Check outlet: Test the wall outlet with another appliance. Reset any tripped breaker or GFCI.
- Inspect power cord: Look for cuts, kinks, or burn marks. If damaged, replace the cord set.
- Access control board: Remove the rear or side panel to reach the main PCB. Locate any onboard fuse and test for continuity; replace with the same rating if blown and investigate for shorts.
- Check wiring harness: Ensure the line and neutral wires from the cord to the board are secure.
- Replace control board: If power is present at the board input but there is no display or response, replace the main control board.
Warning: Do not bypass fuses or safety devices; this can cause fire or electric shock.
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Repair Difficulty
Hard
4/5
Required Part
Main Control Board (PCB)
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