Error Code
high
Unox HOOD – Error WC05: Fumes Temperature Warning
On your CHEFTOP and BAKERTOP MIND.Maps™ unit, error code WC05 indicates an…
Unox HOOD - Error WC07: Lack of Communication 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 CHEFTOP and BAKERTOP MIND.Maps™ unit, error code WC07 indicates a critical lack of communication between key internal components. This often points to issues with wiring harnesses or a main control board malfunction. Power cycle the oven and carefully inspect all accessible wiring for damage before further diagnosis.
Technical Details
Repair Steps:
- Power Cycle the Unit: Safely shut down the UNOX CHEFTOP or BAKERTOP MIND.Maps™ oven by turning off the main power switch or unplugging it. Wait at least 5 minutes to allow all residual power to dissipate, then restore power. Observe if the error clears.
- Inspect Wiring Harnesses and Connectors: With the power OFF and locked out, carefully access the control panel and main control board area. Visually inspect all wiring harnesses connecting the main control board to the display board, power board, and any peripheral modules (e.g., steam generator board, motor control boards). Look for any loose, corroded, pinched, or burnt wires and connectors. Ensure all connectors are fully seated.
- Check for Physical Damage on PCBs: While inspecting the wiring, also visually check the main control board, display board, and other connected PCBs for any signs of physical damage, such as swollen capacitors, burnt components, or scorch marks. Any such damage typically indicates a faulty board.
- Verify Supply Voltages (Advanced Users Only): If you have the necessary training and equipment, and it is safe to do so, measure the supply voltages to the main control board and any communication buses using a multimeter. Refer to the specific UNOX technical documentation for expected voltage values. Incorrect or absent voltages can cause communication failures.
- Isolate Components (If Possible): In some cases, if the system is modular, you might attempt to disconnect non-essential peripherals one by one (with power off) to see if the communication error changes. This can help pinpoint a faulty peripheral module that is disrupting the communication bus. Exercise extreme caution and only perform if guided by a qualified technician or manual.
- Professional Service Required: If the above steps do not resolve the WC07 error, it is highly probable that a main control board, display board, or a critical communication module is faulty. Contact an authorized UNOX service technician for further diagnosis and replacement of components.
Common Questions:
Q: What does UNOX error WC07 typically signify?
A: Error WC07 on UNOX CHEFTOP and BAKERTOP MIND.Maps™ ovens indicates a critical internal communication fault, meaning different electronic components or circuit boards are unable to exchange data properly.
Q: Can I resolve the WC07 error myself, or do I need a technician?
A: While a power cycle and visual inspection of wiring can be performed, resolving WC07 often requires advanced diagnostics, specialized tools, and potentially replacing circuit boards. It is generally recommended to contact an authorized UNOX service technician.
Q: Which components are most likely to cause a WC07 communication error?
A: Common culprits for WC07 include damaged wiring harnesses, loose connectors, a faulty main control board, a defective display board, or issues with other connected PCBs responsible for specific oven functions.
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.