Washer-dryer combo shows F27 and may overfill or underfill; cycle may abort.
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.
Possible Causes
How to Fix / Troubleshooting
Safety first: Disconnect power and shut off water supply if overfilling is suspected.
Step-by-step checks:
- Inspect and clear pressure system: As with F05/F10, clean the air dome and hose, and test the pressure switch.
- Check for siphoning: Ensure the drain hose is installed at the correct height and not causing water to siphon out, which can confuse level sensing.
When to replace: Replace a faulty pressure switch or damaged hose. If the system is mechanically sound but F27 persists, the main control board may require replacement.
Repair Difficulty
Required Part
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