Unox WF31

What does Unox WF31 mean?

WF31 is a fumes board temperature warning. The gas fumes board itself is running outside its safe temperature range. As a warning the oven continues with reduced function while indicating the fumes electronics are overheating and need attention.

Symptoms

• WF31 warning on a gas oven
• Fumes board running hot
• Warning during extended gas operation
• Warning clears as the board cools

Common causes

• Inadequate cooling of the fumes board
• High ambient temperature around the electronics
• Cooling fan issue affecting the board
• Fumes board fault

Diagnostic steps

1. 01

   Allow cooling

   Let the appliance cool and check whether the warning clears.

2. 02

   Check cooling airflow

   Verify cooling airflow over the fumes board and that any relevant fan runs.

3. 03

   Check the installation

   Confirm the oven has adequate clearance and ventilation per the installation manual.

4. 04

   Service the board

   If the board overheats despite correct cooling, have it checked and replaced if faulty.

When to call a professional

WF31 is on a gas appliance and indicates overheating electronics. Diagnosing the cooling and the fumes board should be done by a technician qualified to service gas appliances, particularly if the warning recurs after a cool-down.