Washer-dryer combo shows F27 and may overfill or stop with water in the drum.

Safety first: Unplug the unit and shut off water supply immediately if overfilling occurs. Manually drain excess water via the drain hose or pump filter.

Step-by-step checks:

• 1. Check inlet valves: With the unit unplugged and water turned on, observe whether water continues to enter the tub. If so, the inlet valve is stuck open and must be replaced.
• 2. Inspect pressure hose: Ensure the hose from the tub to the pressure switch is securely attached and not split or disconnected.
• 3. Test pressure switch: Follow the continuity test steps under F10. Replace if it does not switch properly.
• 4. Control board: If valves and pressure system are good but overflow still occurs, the control board may not be shutting off the valves and will need replacement.