What does F12 mean?
Insufficient water intake detected. Machine did not fill to required level.
Common causes
- Water supply turned off
- Clogged inlet filter
- Failed water inlet valve
- Faulty water level sensor
- Low water pressure
Diagnostic & testing steps
- 1. Verify water supply is turned on
- 2. Clean inlet valve screen filter
- 3. Check water pressure - minimum 15 PSI required
- 4. Test inlet valve solenoid: ~500-1000 ohms
- 5. Check water level sensor (pressure switch) and hose
OEM parts & part numbers
Water Inlet Valve, Inlet Filter Screen
Part numbers: 7638860, 5750093
Safety warning
⚠️ Turn off water supply before servicing inlet valve
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