Unox WF30

What does Unox WF30 mean?

WF30 is a communication error with the gas fumes probe board. The control can no longer communicate with the board that handles the combustion fumes probe, so it cannot monitor fumes temperature. As a warning the oven continues with reduced function while flagging the lost communication.

Symptoms

• WF30 warning on a gas oven
• Fumes monitoring unavailable
• Warning recurs during gas operation
• Possible related fumes warnings

Common causes

• Loose or faulty cable to the fumes probe board
• Fumes board fault
• Connector problem at the board
• Power issue to the fumes board

Diagnostic steps

1. 01

   Power down and inspect connections

   Turn off power and check the cabling and connectors to the gas fumes probe board.

2. 02

   Reseat the connectors

   Reconnect the communication cable at the fumes board and the main board.

3. 03

   Test the cable

   Measure continuity of the communication cable with a multimeter.

4. 04

   Replace the board

   Replace the fumes probe board if communication cannot be restored and retest.

When to call a professional

WF30 is on a gas appliance and involves the combustion-fumes electronics. Diagnosing the fumes board and its wiring should be done by a technician qualified to service gas appliances; do not return the oven to full gas operation until fumes monitoring is restored.