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Error code reference

Electrolux Dryer Error Code F5

Supervisory Relay Enable Open (cook modes)

Electrolux codesElectrolux dryer codes

Supervisory Relay Enable Open (cook modes): Alarm sounds and resets control to non-cook mode when relay enable is detected as open during cook modes.

First step from the service manual

Press the CANCEL key to reset display code and audible. Alarm repeats if a cook mode is re-activated.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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What F5 means on a Electrolux dryer

The F5 error code on an Electrolux dryer indicates that the supervisory relay enable circuit has been detected as open during an active cook (heating) mode. The supervisory relay is a safety component that monitors and controls the enabling signal for heating operation. When the control board detects that this relay enable signal is open when it should be closed during a cook cycle, the system interprets it as a fault condition, triggers an audible alarm, and immediately resets the dryer to a non-cook mode to prevent uncontrolled or unsupervised heating.

This fault is tied to the dryer's internal safety monitoring system. The supervisory relay enable circuit acts as an oversight layer on top of the primary heating relay, ensuring that heating only occurs under proper, controlled conditions. An open condition in this circuit can result from a failed relay, a broken or loose wire in the enable signal path, a faulty control board output that drives the relay enable, or poor electrical connections at the relay or board terminals.

The behavior of this fault is self-revealing: pressing the CANCEL key clears the display code and silences the alarm, but if you attempt to re-enter any cook or heating mode, the alarm will repeat if the underlying fault still exists. This repeating pattern is an important diagnostic indicator. It confirms the fault is not a random transient event but a persistent open condition in the relay enable circuit that must be physically identified and corrected before the dryer will safely return to normal heating operation.

Source: manufacturer service documentation.

Common causes of F5

  1. 01

    Failed Supervisory Relay

    Part replacement

    The supervisory relay itself may have failed in an open state, preventing the enable signal from completing the circuit. This is the most direct cause of an open relay enable condition and typically requires relay or control board replacement.

  2. 02

    Faulty Control Board

    Part replacement

    The control board may not be producing the correct output signal to enable the supervisory relay. If the board's relay drive circuit has failed, the relay enable line will appear open even if the relay and wiring are intact.

  3. 03

    Open or Broken Wiring in the Enable Circuit

    Wiring / connection

    A broken wire, loose connector, or corroded terminal in the relay enable signal path can interrupt the circuit and trigger this fault. Inspect the wiring harness connections at both the relay and the control board for damage or poor seating.

  4. 04

    Loose or Corroded Connector Terminals

    Wiring / connection

    Connector terminals that have loosened or corroded over time can create intermittent or permanent open conditions in the enable circuit. Cleaning or reseating the affected connectors may resolve the fault if no component has failed.

  5. 05

    Intermittent Electrical Fault

    Wiring / connection

    In some cases, a transient electrical disturbance may trigger the F5 code. However, because the alarm repeats when a cook mode is reactivated, a true intermittent fault must be distinguished from a persistent component failure through careful testing.

See the test procedure for each cause

Frequently asked questions about F5

What does F5 mean on a Electrolux dryer?
The F5 code on an Electrolux dryer means the supervisory relay enable circuit was detected as open during a heating cycle. This is a safety fault that causes the dryer to sound an alarm and shut down heating. The control resets to a non-heating mode automatically, and the alarm will repeat if you try to run a heat cycle again without addressing the underlying problem.
Can I fix the F5 error on my Electrolux dryer myself?
Some causes of the F5 code, such as a loose connector or a corroded terminal, can be addressed by a knowledgeable DIYer comfortable working with appliance wiring. However, if the supervisory relay or control board has failed, component-level diagnosis and replacement are required. Working inside a dryer involves exposure to line voltage, so always unplug the unit before inspecting any internal components.
Will pressing CANCEL reset the F5 error and fix the dryer?
Pressing CANCEL will clear the F5 code from the display and silence the audible alarm, but it does not fix the underlying fault. If you re-enter a cook or heating mode and the open condition still exists, the alarm will immediately repeat. The dryer must be properly diagnosed and repaired before it will run a heat cycle without triggering the F5 fault again.
Is the F5 error on an Electrolux dryer a safety concern?
Yes, the F5 fault is specifically a safety-related error. The supervisory relay enable circuit is a protective layer that ensures heating only occurs under controlled conditions. The dryer is designed to shut down heating when this fault is detected, which means operating the dryer in a non-heat mode may still be possible, but any attempt to heat will be blocked until the fault is resolved. Do not attempt to bypass this safety system.
How much does it cost to repair an F5 error on an Electrolux dryer?
Repair costs depend on which component has failed. If the issue is limited to a wiring or connector problem, costs may be minimal, primarily covering a service call in the range of $75 to $150. If the supervisory relay or control board requires replacement, total repair costs including parts and labor typically fall in the range of $150 to $400 or more depending on your location and the specific parts needed.

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