Error Code
high
Unox BAKERLUX SHOP.Pro – Contactors are Chattering
On your BAKERLUX SHOP.Pro unit, chattering contactors typically indicate an unstable power…
Unox BAKERLUX SHOP.Pro - Error WC02: Hood Power Board Overtemperature
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 BAKERLUX SHOP.Pro unit, error WC02 indicates an overtemperature condition on the hood's power board. This can stem from insufficient cooling, improper installation, or issues with the water supply and solenoid valve crucial for heat dissipation. Immediate checks include verifying proper hood installation, water tap status, and power to the water solenoid valve.
Technical Details
Repair Steps:
- Allow for Cooling: First, ensure the immediate operational area around the UNOX hood is adequately ventilated. Turn off the unit and allow the hood and its internal components, particularly the power board, to cool down completely for at least 30-60 minutes. After cooling, power the unit back on to see if the WC02 error re-appears.
- Verify Installation Guidelines: Carefully review the UNOX installation manual for the BAKERLUX SHOP.Pro series. Confirm that the hood has been installed exactly according to the manufacturer’s specifications, paying close attention to clearances for heat dissipation and ventilation requirements. Improper installation can restrict airflow and lead to overheating.
- Check Water Tap Supply: An open water supply is crucial for the hood’s cooling system, which often involves a water solenoid valve. Locate the water tap supplying the UNOX hood and ensure it is fully open, providing adequate water pressure. A closed or partially closed tap can lead to insufficient cooling and overtemperature conditions.
- Inspect Water Solenoid Valve Power: With the unit powered on, use a multimeter set to V AC to measure the voltage supplied to the water solenoid valve connector (typically labeled P4) on the power board. Confirm that the power board is supplying approximately 230 V AC to the solenoid. No voltage indicates a fault with the power board or its output circuit.
- Assess Water Solenoid Valve Function: If the solenoid valve is receiving power, listen carefully for the sound of water flowing through the valve when it should be active (e.g., during a cooling cycle). Check the hood drain to confirm if water is actively flowing out, indicating the solenoid is opening and allowing water passage. Absence of water flow despite power to the solenoid suggests the valve is mechanically stuck or electrically faulty.
- Replace Water Solenoid Valve: If the previous steps indicate the water solenoid valve is faulty (no water flow despite power), safely disconnect power and replace the water solenoid valve with a genuine UNOX spare part. Ensure all connections are secure and leak-free after replacement.
- Replace Power Boards (If Necessary): If all other checks are inconclusive, or if the power board fails to supply voltage to the solenoid, or if the overtemperature persists despite proper cooling and water flow, then a faulty power board is highly probable. Depending on the specific hood design, you may have a back power board and/or a dedicated hood power board. Safely disconnect power and replace the suspected faulty power board(s) with original UNOX replacement parts.
Common Questions:
Q: Why is my UNOX hood’s power board overheating?
A: Overtemperature on the hood’s power board (WC02) is typically caused by inadequate ventilation, an obstructed or improperly installed hood, a closed water tap, or a faulty water solenoid valve that prevents proper cooling, leading to excessive heat buildup on the electrical components.
Q: How critical is the WC02 error on my BAKERLUX SHOP.Pro?
A: The WC02 error is highly critical. An overheating power board can lead to permanent damage to the unit’s electronics, complete machine shutdown, or even a fire hazard if not addressed promptly. It requires immediate attention to diagnose and resolve the root cause.
Q: Can I continue to use my UNOX oven with a WC02 error?
A: No, it is strongly advised not to use your UNOX BAKERLUX SHOP.Pro oven while the WC02 error is active. Operating the unit with an overheating power board is unsafe and risks serious damage to the equipment. Address the error immediately before resuming operation.
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.