KitchenAid Dishwasher F4E2 code: Heating system error
The dishwasher detected a problem with its water heating or drying heater. Dishes may come out cool, wet or not fully sanitized.
Most common causes
- Failed heating element
- Loose heater wiring
- Temperature sensor or control fault
What you can safely check yourself
- Reset the control: unplug the dishwasher (or switch off its breaker if it is hard-wired) for 30 seconds, then restore power.
Unplug the appliance before moving or cleaning anything. Do not open panels, touch gas connections or bypass safety switches.
Checked against: producthelp.kitchenaid.com. Meanings can vary by model; check your owner’s manual.