Unox WF19

What does Unox WF19 mean?

WF19 is a lack-of-detergent warning for the automatic cleaning system. The oven has detected that detergent is not available for a cleaning cycle, so it warns the user. It typically relates to an empty container, an air-locked or blocked detergent line, or the detergent level detection.

Symptoms

• WF19 warning on the control panel
• Automatic cleaning cycle cannot start or pauses
• Detergent container empty
• Warning recurs at the start of cleaning

Common causes

• Detergent container empty or not connected
• Air-locked or blocked detergent line
• Detergent pump fault
• Detergent level detector fault
• Wiring fault to the detection circuit

Diagnostic steps

1. 01

   Check the detergent supply

   Confirm the detergent container has product and is correctly connected to the oven.

2. 02

   Prime the line

   Clear any air lock or blockage in the detergent line so product can reach the chamber.

3. 03

   Check the pump and detector

   Verify the detergent pump runs and the level detector reports correctly when product is present.

4. 04

   Repair detection wiring

   With power off, inspect and restore wiring to the detergent detection circuit.

When to call a professional

WF19 is usually resolved by refilling and reconnecting detergent. If product is present and the warning persists, the pump, level detector or its wiring may be at fault, which a qualified Unox technician should diagnose. Handle cleaning chemicals per the safety data sheet.