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 U13: 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 code U13 indicates an overtemperature condition on the hood's power board. This can stem from insufficient cooling, improper installation, or a faulty water solenoid valve. Thoroughly inspect ventilation, water supply, and component integrity to resolve the issue, as this can lead to system malfunction.
Technical Details
Repair Steps:
- Allow for Cooling and Ventilation Check: Power off the unit and allow the hood to cool completely. Verify that there are no obstructions around the hood’s ventilation inlets and outlets. Ensure ambient kitchen temperatures are within UNOX specified operating ranges.
- Review Installation Guidelines: Consult the UNOX BAKERLUX SHOP.Pro installation manual. Confirm that the hood has been installed precisely according to the manufacturer’s guidelines, paying close attention to clearances and recommended airflow.
- Verify Water Supply to Hood: Confirm that the main water tap supplying the hood is fully open. Check for adequate water pressure to the unit, as insufficient water flow can impede cooling functions.
- Test Water Solenoid Valve Power: Using a multimeter set to V AC, measure the voltage at connector P4 on the hood’s power board. Confirm it is supplying 230 V AC to the water solenoid valve. No power indicates an issue with the power board or wiring.
- Assess Water Flow Through Solenoid Valve: If the solenoid valve is receiving proper voltage, check for water flow through it. You should hear the sound of water flowing through the valve and potentially observe water draining from the hood’s drain.
- Component Replacement (If Necessary):
- If the water solenoid valve receives power but no water flows through it, replace the water solenoid valve.
- If the issue persists after verifying cooling, installation, and water flow, or if the power board fails to supply proper voltage to the solenoid, the hood power board likely requires replacement.
Common Questions:
Q: What causes the U13 hood power board overtemperature error?
A: The U13 error on UNOX BAKERLUX SHOP.Pro units typically indicates the hood power board is overheating due to restricted ventilation, improper installation failing to meet UNOX guidelines, or a malfunctioning water solenoid valve that isn’t providing adequate cooling.
Q: Is it safe to continue using my UNOX oven with a U13 error?
A: No, it is not recommended to operate the oven with a U13 error. An overheating power board can lead to component failure, potential safety hazards, and further damage to the unit. Address the issue promptly to prevent more serious damage or downtime.
Q: How can I prevent the hood power board from overheating?
A: Ensure the hood has adequate clearance and proper ventilation as per the UNOX installation manual. Regularly clean any filters or vents to maintain optimal airflow, and periodically check for correct water supply to the unit’s cooling components and the functionality of the water solenoid valve.
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.