Error code reference
Whirlpool Dishwasher Error Code F3
Heating system defective
Heating system defective - fault indicated after 25 minutes (first check after 5 min, then 2 more checks). Heating rate too slow (<1.5°C in 10 min), heating element (HEW) failed, heating relay (RE2) on control board defective, or NTC resistance variation.
First step from the service manual
Check heating element resistance (expected 24.5 ohms), check heating relay RE2 on control board, verify NTC values.
The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.
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- Step-by-step tests with expected resistance, voltage, and continuity values
- Wiring diagram references and connector pinouts from the OEM service manual
- Verified part numbers when replacement is required
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