Washer shows F27 and may overfill or underfill; cycles may abort unexpectedly.

Safety First: Disconnect power and shut off water supply if overfilling is suspected.

Step-by-step checks:

• Inspect pressure system: Follow the same hose and switch checks as F05/F10. Ensure no soap buildup or kinks.
• Check for air leaks: Confirm all hose connections are tight and the hose is not hardened or cracked.
• Reset control: After correcting any issues, unplug the washer for 5–10 minutes to reset the control logic.

When to replace: Replace the pressure switch if it does not respond correctly to pressure changes. If the error persists with a new switch and good hose, the main control may be at fault.