F42Serious
Kenmore Dryer F42 Error Code
The heater relay is stuck closed, causing continuous heat even when off.
Common causes
- Failed control board relay
- Shorted heating element (rare)
How to fix it
- Unplug dryer immediately – this can cause overheating.
- Check heating element resistance.
⚠ When to call a pro: Do not operate; call a technician to replace the control board or relay.
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Always unplug the appliance (and turn off the water for washers/dishwashers) before inspecting. These guides are for information only and are not a substitute for a professional repair.