Unox WF38

What does Unox WF38 mean?

WF38 is a flame control board warning on gas ovens. The board that manages burner ignition and flame detection has reported a problem. As a warning the oven keeps limited operation while flagging that the flame-control electronics need attention.

Symptoms

• WF38 warning on a gas oven
• Intermittent ignition or flame detection issues
• Possible related gas alarms
• Warning recurs during gas operation

Common causes

• Flame control board fault
• Wiring fault to the flame board
• Flame-detection electrode or sensing issue
• Connector problem at the board

Diagnostic steps

1. 01

   Power down and inspect

   Turn off the appliance and inspect the flame control board and its connections.

2. 02

   Check flame detection

   Verify the flame-detection electrode and wiring are intact and correctly positioned.

3. 03

   Test the board wiring

   Check the wiring to the flame control board with a multimeter.

4. 04

   Replace the board

   Replace the flame control board if it remains faulty and retest ignition.

When to call a professional

WF38 concerns the gas flame-control system. All work on ignition, flame detection and the flame control board must be done by a technician qualified to service gas appliances. Do not keep operating a gas oven with unresolved flame-control warnings.