Error Code
high
Unox PROVER – Error WL02: Power Board Over Temperature Alarm
On your CHEFTOP and BAKERTOP MIND.Maps™ unit, error code WL02 indicates an…
Unox PROVER - Error WL01: Humidity Probe Alarm
Caution / Monitor Closely
Warning: The information provided here is for educational purposes only.
Working with commercial kitchen equipment involves high voltage, gas, and high temperatures.
We strongly recommend contacting a certified service technician for any repairs.
We are not responsible for any damage or injuries resulting from DIY repair attempts.
This information is provided 'as is' without any guarantees of completeness or accuracy.
TLDR
On your CHEFTOP and BAKERTOP MIND.Maps™ unit, error code WL01 signifies an issue with the humidity probe, indicating an alarm condition. This typically points to a faulty sensor, an accumulation of scale, or compromised wiring. Promptly addressing this error is crucial to ensure precise humidity control and optimal cooking results.
Technical Details
Repair Steps:
- Safety First: Before any inspection or repair, always disconnect the UNOX CHEFTOP or BAKERTOP MIND.Maps™ oven from its main power supply to prevent electrical hazards.
- Locate the Humidity Probe: The humidity probe is typically located within the cooking chamber or connected to the steam generation/injection system. Consult your oven’s technical diagrams if its exact location is not immediately obvious.
- Inspect for Physical Damage and Scale: Carefully examine the humidity probe for any signs of physical damage, corrosion, or, most commonly, scale buildup. Hard water deposits can insulate the probe, preventing accurate readings.
- Clean the Probe: If scale is present, gently clean the humidity probe using a descaling solution appropriate for food-grade equipment or a soft brush. Avoid abrasive materials that could damage the sensor element. Ensure the probe is thoroughly rinsed and dry before reassembly.
- Check Wiring and Connections: Trace the wiring connected to the humidity probe back to the control board. Look for any loose connections, frayed wires, or signs of heat damage. Secure any loose connections and repair or replace damaged wiring as necessary.
- Test Probe Functionality (If Possible): If you have access to a multimeter and the technical specifications for the humidity probe (e.g., resistance values at specific temperatures/humidity levels), you can attempt to test its functionality. A probe that reads outside its specified parameters is likely faulty.
- Replace the Humidity Probe: If cleaning and checking connections do not resolve the WL01 error, or if the probe fails electrical testing, the humidity probe itself is likely defective and requires replacement. Use only genuine UNOX spare parts.
- Reset and Test: After any repairs or replacements, reassemble the oven, restore power, and clear the error code through the control panel. Run a test cycle to ensure accurate humidity control and verify that the WL01 error does not reappear.
Common Questions:
Q: What are the primary causes of a WL01 humidity probe alarm on a UNOX oven?
A: The most common causes for a WL01 error are a defective humidity probe, significant scale buildup on the probe affecting its accuracy, or damaged/loose wiring connections to the probe.
Q: Can I continue to use my UNOX oven with a WL01 error?
A: While the oven may operate, its humidity control system will be compromised, leading to inconsistent cooking results. It’s strongly recommended to address the error promptly to maintain optimal performance and food quality.
Q: How can I prevent future WL01 errors related to scale?
A: Regular descaling of your UNOX oven and adhering to its recommended maintenance schedule, especially in areas with hard water, is crucial. Ensure proper water filtration is in place and maintained.
When to call a technician
Consider calling a certified technician if:
- The error keeps coming back after you've tried the steps above.
- You're not comfortable doing the checks or repairs yourself.
- You notice unusual noise, smell, or behaviour.
- Equipment is under warranty and you want official service.
- You need the unit back in service quickly with minimal downtime.