Dryer displays E4 and may not heat or may shut off quickly

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

Blocked exhaust vent, failed cycling thermostat, stuck heater relay on control board, restricted lint filter housing

Safety First: Unplug dryer and shut off gas. Heating components can be very hot.

Steps:

Clean lint path: Thoroughly clean the lint screen, lint chute, blower housing, and exhaust vent.
Check cycling thermostat: Test the cycling thermostat on the blower housing for proper opening/closing temperatures (per service manual). Replace if stuck closed.
Inspect heater relay: On the main control board, check for a welded heater relay (contacts stuck closed). Replace the control board if the relay is stuck.

Hard 4/5

Cycling Thermostat

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