PF
Whynter
Power Failure / Voltage Error
Display shows PF and unit will not start or resets unexpectedly.
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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
Recent power outage or brownout, Loose power cord connection, Faulty outlet or wiring, Internal power supply fault on main PCB
How to Fix / Troubleshooting
Safety: If you suspect wiring issues, consult a licensed electrician.
- Reset after outage: Unplug the unit for 5 minutes, then plug back in. Some models display PF after a power interruption and require a manual restart.
- Check cord and plug: Inspect the power cord for cuts, burns, or loose blades. Ensure the plug fits snugly in the outlet.
- Test outlet: Plug in another appliance to verify the outlet is supplying stable power. Avoid using extension cords.
- Internal inspection: If PF recurs with a good outlet, inspect the main control PCB for burnt components in the power supply section.
- Replace main PCB: If the internal power supply is damaged, replace the main control PCB.
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Repair Difficulty
Medium
3/5
Required Part
Main Control PCB
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