Unox WL01

What does Unox WL01 mean?

WL01 is a humidity probe alarm on the prover accessory. The probe that measures humidity in the prover has failed or is disconnected, so humidity control is impaired. As a warning the prover continues with reduced function while flagging the humidity probe problem.

Symptoms

• WL01 warning referencing the prover
• Humidity not controlled correctly in the prover
• Implausible humidity reading
• Warning recurs during operation

Common causes

• Humidity probe disconnected
• Probe out of range or failed
• Wiring fault to the probe
• Connector problem

Diagnostic steps

1. 01

   Power down and check the probe

   Turn off power and confirm the humidity probe is connected.

2. 02

   Inspect the probe

   Check the humidity probe for damage or contamination.

3. 03

   Check the wiring

   Inspect the wiring between the humidity probe and the prover board.

4. 04

   Replace the probe

   Replace the humidity probe if it does not read correctly and retest.

When to call a professional

WL01 affects the prover accessory. Verifying and replacing the humidity probe requires accessing the prover electronics; have a qualified Unox technician handle it if reconnecting the probe does not clear the warning.