F3 appears when the unit can’t bring water up to the right temperature during the cycle. The heating element or its safety circuit is the main suspect.
Brand: Whirlpool
Whirlpool Dishwasher Error Code F3 (Won’t Heat Water)
F3 means the dishwasher isn’t heating water correctly during the cycle, usually the heating element or a safety thermostat.
Meaning
Possible causes
No cause is certain until it has been checked on the appliance.
- Likely Heating element burned out
- Possible Safety thermostat tripped
- Possible Heavy scale buildup blocking heat transfer
First checks
- Test the heating element's continuity with a multimeter.
- Check the safety thermostat.
- Descale the unit if it hasn't been maintained in a while.
What not to do
- Running repeated hot cycles hoping the fault resolves itself.
An error code varies by brand
The same code can have a different meaning depending on the brand and model. Always check your appliance's manual before acting.
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When to call a professional
If the simple checks didn’t solve it, if the fix involves electrical wiring, gas, or the refrigerant circuit, or if you have any doubt at all: stop there and hand the appliance to a qualified repair professional.