Hisense
Output Drive Failure
Timer counts down but heater and fan do not run; unit appears on but idle.
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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
Failed heater and fan relays, Broken common supply to loads, Firmware glitch, Safety interlock not recognized by PCB
How to Fix / Troubleshooting
Safety first: Unplug the unit before internal inspection.
- Reset control: Unplug for 5 minutes, then plug back in and try again to clear any temporary firmware fault.
- Verify basket switch: Ensure the basket is fully inserted and the microswitch is functioning (test continuity when closed).
- Inspect relays: Open the unit and locate the heater and fan relays on the main PCB. Check for burnt contacts or cracked solder joints.
- Check wiring: Confirm that the common supply wire feeding both heater and fan is intact and connected.
- Replace main PCB: If relays do not energize despite correct inputs and safety switches, replace the main control PCB.
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Repair Difficulty
Hard
4/5
Required Part
Main Control PCB
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