Unox WF06

What does Unox WF06 mean?

WF06 (also shown as WF06/U01) is a power board over-heating warning. The power board has become too hot, usually because the back cooling fan is not adequately cooling it. As a warning the oven keeps working with reduced function while alerting that the electronics are running hot and need attention.

Symptoms

• WF06 or WF06/U01 warning on the control panel
• Back cooling fan not running
• Warning appears during extended high-temperature use
• Warning clears when the board cools

Common causes

• Back cooling fan not running
• Cooling fan not receiving its 230 V AC supply
• Wrong cooling air flow direction or blocked airflow
• Excessive ambient temperature around the oven
• Power board fault

Diagnostic steps

1. 01

   Check the back cooling fan

   Verify whether the back cooling fan runs; the warning is tied to inadequate cooling of the power board.

2. 02

   Test the fan supply

   Measure the supply at the cooling fan connection with a multimeter set to VAC and confirm it receives 230 V AC.

3. 03

   Check the air flux direction

   Verify the direction of the air flux is correct so the fan actually cools the board.

4. 04

   Replace the fan or board

   Replace the back cooling fan if it does not run with power present; if cooling is correct but the warning persists, have the power board checked.

When to call a professional

WF06 means the control electronics are overheating. Testing the cooling fan supply at 230 V AC and checking the power board are mains-voltage tasks for a qualified Unox technician. Address it promptly even though the oven still runs, to avoid heat damage to the board.