Kenmore Dryer Error Code F4E3

F4E3 indicates that the dryer's control system has detected restricted or low airflow through the exhaust system. This is a protective fault designed to alert you before overheating can occur. The code points to the lint screen, exhaust duct, exhaust fan, or exterior vent as the source of the restriction. Addressing the blockage is required to clear the fault and restore normal operation.

Running the dryer with an active F4E3 code is not recommended. Restricted airflow causes heat to build up inside the drum and exhaust path, which increases the risk of overheating and could create a fire hazard, particularly if lint has accumulated in the duct. You should resolve the airflow restriction before continuing to use the appliance.

If the cause is simply a clogged lint screen or duct, the repair costs nothing beyond your time. Professional duct cleaning services typically run in the range of $80 to $180. If a blower wheel or exhaust fan motor needs replacement, parts and labor combined can range from $150 to $350 depending on your location and the specific components required.

Start by cleaning the lint screen and inspecting the exhaust duct from the back of the dryer all the way to the exterior vent cap. Make sure the duct is not kinked, crushed, or clogged with lint buildup. If the ductwork is clear, inspect the blower wheel inside the dryer for debris or damage. If the fan motor is suspect, it should be tested and replaced if it is not running at proper speed.

A reset may temporarily clear the displayed code, but if the underlying airflow restriction has not been resolved, the F4E3 fault will return once the dryer runs again and the control detects the same problem. The restriction must be physically corrected first, and then a reset can be performed to confirm the issue is resolved.