H27
Panasonic
Fan or Drying System Fault
Dishwasher shows H27 and may stop during drying phase
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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 drying fan motor, Blocked vent duct, Faulty fan triac on control board, Loose fan wiring
How to Fix / Troubleshooting
Safety first: Disconnect power before accessing the door or side panels.
- Listen for fan: During the drying phase, you should hear a gentle fan noise. Silence combined with H27 suggests a fan issue.
- Inspect vent: Check the door vent outlet for blockages such as detergent residue or plastic wrap. Clean with a damp cloth.
- Access fan assembly: Remove the inner door panel or side panel (depending on model) to locate the drying fan. Check that the fan blades spin freely and that the motor connector is secure.
- Test fan motor: With a multimeter, check the fan motor for continuity. An open circuit indicates a failed motor.
If the fan motor is defective, replace the Panasonic drying fan assembly. If the fan tests good, the control board’s fan driver may be faulty.
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Repair Difficulty
Hard
4/5
Required Part
Drying Fan Assembly
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