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 WC05: HOOD - Fumes Temperature Too High
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 code WC05 indicates that the hood fumes temperature is excessively high. This often stems from insufficient water flow to the hood, a malfunctioning water solenoid valve, or a defective temperature probe. A faulty Hood power board can also be the underlying cause.
Technical Details
Repair Steps:
- Verify Water Supply: Ensure the main water tap supplying the UNOX BAKERLUX SHOP.Pro unit is fully open and that water pressure is adequate.
- Inspect Water Solenoid Valve Power: Using a multimeter set to V AC, measure the voltage at connector P4 of the water solenoid valve. Confirm the power board is supplying 230 V AC.
- Check Water Flow Through Solenoid: Listen carefully for the sound of water flowing through the solenoid valve and exiting the hood drain. Absence of flow despite power suggests a blockage or internal failure.
- Replace Water Solenoid Valve: If no water flow is detected or the solenoid is not receiving power despite the board outputting 230V AC, replace the water solenoid valve.
- Test Fumes Temperature Probe Impedance: Set your multimeter to ohm and measure the impedance of the fumes temperature probe. It should ideally read approximately 110 ohm at 25 °C (77 °F).
- Replace Fumes Temperature Probe: If the impedance reading is significantly outside the specified range, replace the fumes temperature probe.
- Replace Hood Power Board: If all other components (water supply, solenoid, temperature probe) are confirmed to be functional, the Hood power board may be defective and requires replacement.
Common Questions:
Q: Why is my UNOX BAKERLUX SHOP.Pro displaying WC05 – Fumes Temperature Too High?
A: This error typically signifies an issue with the hood’s cooling system, commonly due to an obstructed water supply, a faulty water solenoid valve preventing water flow, a defective temperature probe providing incorrect readings, or a malfunction on the main Hood power board.
Q: How can I verify if the water solenoid valve is working correctly?
A: First, ensure the valve is receiving 230 V AC power from the control board. Then, listen for water flow through the valve and confirm water is discharging from the hood drain. No flow with power suggests the valve is seized or blocked.
Q: What should the resistance reading be for the fumes temperature probe?
A: The fumes temperature probe should exhibit an impedance of approximately 110 ohms when measured at 25 °C (77 °F) with a multimeter set to the ohm range. Significant deviation indicates a faulty probe.
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.