What does F0 E4 mean?
Inlet valve solenoid open or shorted.
Common causes
- Failed inlet valve
- Wiring fault
- Control board relay
Diagnostic & testing steps
- 1. Test inlet valve coil (~1000-1500 ohms)
- 2. Verify 120VAC at valve during fill
- 3. Replace inlet valve
Tools required
- Multimeter
- Adjustable wrench
OEM parts & part numbers
Water Inlet Valve
Part numbers: W10866538
Safety warning
⚠️ Turn off water supply before replacing valve.
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