Error Code
high
Unox OVEN – Control Panel or USB Board Defective – Buzzer Does Not Sound
On your CHEFTOP and BAKERTOP MIND.Maps™ unit, a non-sounding buzzer often indicates…
Unox OVEN - Error WF37: Lack of Water Supply or Water Level Sensor Faults (EL1/EG1/EG2)
Critical / Stop Operation
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 WF37 indicates a critical lack of water supply or a malfunction with the water level electrodes/sensors (EL1, EG1, EG2). This issue prevents the oven from generating steam and performing essential cooking functions, rendering it inoperable. Immediate diagnosis of the water input system and sensors is required to restore operation.
Technical Details
Repair Steps:
- Verify Main Water Supply: Ensure the main water tap supplying your UNOX CHEFTOP or BAKERTOP MIND.Maps™ unit is fully open and that there is adequate water pressure. Check for any external shut-off valves that might be closed.
- Inspect External Water Filters: Examine any inline or external water filters for clogging or saturation. A restricted filter can significantly reduce water flow to the oven. Replace if necessary, adhering to your regular preventative maintenance schedule.
- Check Water Inlet Solenoid Valve: Locate the water inlet valve, typically found at the point where the water line connects to the oven. Verify it’s receiving power and attempting to open. Listen for a click when the unit tries to fill. Inspect for blockages or mechanical failure.
- Examine Water Level Sensors (EL1, EG1, EG2): These sensors are usually located within the steam generator or boiler. Power down and disconnect the unit from power. Visually inspect the sensors for heavy scale buildup, corrosion, damage, or if they have become dislodged. Clean any scale buildup with descaling solution or a soft brush. If damaged, they will need replacement.
- Inspect Wiring and Connections: Carefully check the electrical wiring and connections for the water inlet valve and the EL1, EG1, EG2 sensors. Look for loose wires, signs of corrosion, or damage that could interrupt the signal or power.
- Perform Descaling Cycle (if applicable): If significant scale is present inside the steam generator, it can interfere with the proper functioning of the water level sensors. Run a descaling cycle according to the UNOX owner’s manual.
- Power Cycle the Unit: After performing any checks or repairs, power down the UNOX oven completely by unplugging it or tripping its breaker for at least 5 minutes. Then, restore power and restart the unit to see if the error clears.
- Consult a Certified UNOX Technician: If the WF37 error persists after these comprehensive checks, it indicates a more complex internal issue, possibly with the control board or a specific component requiring specialized tools and expertise. Contact a RestoFixer Specialist for professional diagnosis and repair.
Common Questions:
Q: What does UNOX error WF37 specifically mean?
A: UNOX error code WF37 indicates a lack of water supply to the unit or a malfunction in the water level electrodes/sensors identified as EL1, EG1, or EG2. This prevents the combi oven from properly generating steam.
Q: How can I resolve a WF37 error on my UNOX oven?
A: To resolve WF37, first ensure the main water supply is open and water pressure is adequate. Check for clogged external filters. Then, inspect the water inlet valve and the water level sensors (EL1, EG1, EG2) for scale buildup, damage, or loose connections.
Q: Is error WF37 a serious problem for UNOX combi ovens?
A: Yes, error WF37 is a high-severity issue. It prevents the UNOX oven from performing its core functions that require water and steam, making the unit inoperable for most cooking processes. Immediate attention is required.
When to call a technician
For this error, we recommend calling a certified technician. Do not continue operation or attempt repair yourself.
- Equipment shows a critical or stop-operation fault.
- You smell gas, burning, or see smoke or sparks.
- Error returns after following the steps above.
- You are not trained to work on this equipment.
- Warranty or safety could be affected by DIY repair.