Unox WF27

What does Unox WF27 mean?

WF27 is a lack-of-water warning linked to valve EL1. Like WF16, it indicates the oven is not getting the water it needs through the EL1 circuit, either from the supply or because EL1 is not delivering water. The oven warns while continuing with reduced water-dependent function.

Symptoms

• WF27 warning on the control panel
• Insufficient or no water/steam
• Water-dependent functions impaired
• Warning recurs when water is requested

Common causes

• Water supply off or low pressure
• Clogged filter or inlet
• Valve EL1 stuck closed or faulty
• Wiring fault to EL1
• Blocked or kinked water line

Diagnostic steps

1. 01

   Check the water supply

   Confirm the water tap is open and at adequate pressure.

2. 02

   Inspect filter and line

   Check the inlet filter and water line for blockage or kinks.

3. 03

   Test valve EL1

   With power off, verify EL1 actuates and is not stuck closed; check its supply when energised.

4. 04

   Repair or replace EL1

   Restore faulty wiring and replace EL1 if it does not open on command.

When to call a professional

WF27 starts with operator checks of supply and filter. If water is present and EL1 still fails, testing and replacing the solenoid valve is electrical and plumbing work for a qualified Unox technician.