Maytag Dryer Error Code F4E2

The F4E2 error code on a Maytag electric dryer indicates a failure in the secondary heating circuit, specifically that no voltage is being detected at the heater relay on the Appliance Control Unit (ACU). This code is exclusive to electric dryer models and points to a breakdown in the communication or power delivery between the ACU relay and the second heater element. The control board monitors voltage at the heater relay as part of its circuit verification process, and when that expected voltage signal is absent, the unit logs F4E2 and typically halts the heating cycle to prevent unsafe operation.

The most frequent cause of this code is a loose or disconnected wiring harness. The connectors that run from the ACU to the heater element or to the relay itself can work loose over time due to vibration during normal dryer operation. Before assuming a component has failed, the wiring connections at both ends of the circuit should be inspected carefully. A connector that appears seated may still have a pin that has backed out of its housing, causing an intermittent or complete loss of voltage signal.

If the wiring checks out and connections are secure, the fault likely lies with the heater element itself, the relay on the ACU, or the wiring harness between those components. A failed heater element can present as an open circuit, which would prevent voltage from completing the loop the control board is monitoring. In some cases, the relay on the ACU may have failed internally. Diagnosing beyond the wiring stage typically requires a multimeter to test continuity through the heater element and to verify relay output voltage.