Dryer shows F20 and may not start or may lock out heating.

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Repeated overheating events, blocked condenser or filters, defective thermostats, control board safety logic triggered

Safety first: Unplug the dryer and allow it to cool fully.

Clear overheating causes:

Thoroughly clean all user-accessible filters, lint screens, and the condenser (if applicable).
Inspect the exhaust duct for restrictions and correct any installation issues.
Check thermostats and safety cut-outs for proper operation and reset if applicable.
After addressing airflow and thermostat issues, perform a power reset and run a low-heat test cycle.
If F20 reappears quickly, a deeper diagnostic of the control board and sensors is required; contact a technician.

Medium 3/5

High-Limit Thermostat / Control Board

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