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 WF06/U01: Power board over heating warning
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 WF06/U01 signifies a power board overheating warning. This issue often stems from a malfunctioning cooling fan, improper airflow, or external heat sources affecting the oven's rear. Resolve by diagnosing fan operation, checking ambient conditions, and potentially replacing the power board if temperatures exceed safe limits.
Technical Details
Repair Steps:
- Inspect Back Cooling Fan Power Supply: With a multimeter set to VAC, measure the power supply directly at the connection of the back cooling fan. Verify it receives 230 V AC. If no power, investigate wiring or control board output.
- Verify Back Cooling Fan Operation: Confirm that the back cooling fan is running when the unit is powered on. If it receives power but does not spin, the fan motor is likely seized or faulty.
- Check Airflow Direction: Ensure the air flux from the back cooling fan is directed from the inside of the unit towards the outside. Incorrect airflow can trap heat. If the direction is reversed, carefully reverse the position of the back cooling fan inside its casing to correct the airflow.
- Evaluate External Heat Sources: Ascertain if the oven is installed in close proximity to any external heat sources (e.g., other hot cooking equipment, direct sunlight, poor ventilation). If identified, relocate the oven or implement proper heat shielding/ventilation to move it away from the external heating source.
- Measure Power Board Temperature: With the back panel closed, use an external certified probe to measure the temperature in the backside of the oven near the power board. A temperature exceeding 70 °C (158 °F) indicates critical overheating.
- Replace Back Cooling Fan (If Faulty): If the back cooling fan is not receiving power, not running despite power, or has incorrect airflow that cannot be rectified, replace the back cooling fan with a genuine UNOX replacement part.
- Replace Power Board (If Overheating Persists): If, after addressing fan operation and external heat sources, the temperature near the power board consistently remains above 70 °C (158 °F), the power board itself is likely failing and must be replaced.
- Test and Investigate: After any component replacement, thoroughly test the oven’s operation. Continuously monitor for overheating issues and further investigate potential underlying causes such as improper oven installation or persistent external heating influences.
Common Questions:
Q: What does error code WF06/U01 signify on a UNOX BAKERLUX SHOP.Pro?
A: This error indicates a power board overheating warning. It’s a critical alert that the main control board is experiencing excessive temperatures, which can lead to malfunction or damage.
Q: How do I check the back cooling fan?
A: First, use a multimeter to ensure the fan is receiving 230V AC power. Then, visually confirm it’s spinning and that the airflow is correctly directed from inside the oven towards the outside. If it’s not running or airflow is wrong, address these issues.
Q: When is it necessary to replace the power board?
A: The power board typically needs replacement if, after verifying the cooling fan’s function and ensuring no external heat sources are contributing, the temperature near the board still exceeds 70°C (158°F) when the back panel is closed.
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.