Error Code
high
Unox STATIC OVEN – Error WS01: Power Board Overheating Warning
On your CHEFTOP and BAKERTOP MIND.Maps™ unit, error code WS01 indicates an…
Unox STATIC OVEN - Error AS04-AS05: Floor/Ceiling Temperature Probe Alarm
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 AS04-AS05 indicates an alarm from the floor or ceiling temperature probe. This typically means the probe is faulty, disconnected, or there's an issue with its wiring or the control board. Immediate inspection and replacement are necessary to restore accurate temperature control and safe operation of the oven.
Technical Details
Repair Steps:
- Safety First: Immediately disconnect the UNOX CHEFTOP/BAKERTOP MIND.Maps™ unit from its main power supply. Ensure all energy sources are de-energized before proceeding with any inspection or repair.
- Locate Temperature Probes: Carefully identify the floor and ceiling temperature probes within the cooking chamber. The AS04 alarm relates to the floor probe, and AS05 relates to the ceiling probe. Note their exact positioning and connections.
- Inspect Wiring and Connections: Visually inspect the wiring leading to both the floor and ceiling temperature probes. Look for any signs of damage, chafing, cuts, or loose connections. Pay close attention to the connectors at both the probe end and the control board interface. Ensure all connections are secure and free from corrosion.
- Test Probe Resistance (If Applicable): If you have access to a multimeter and the technical specifications for the probes (resistance values at specific temperatures), carefully disconnect the suspected probe and measure its resistance. Compare the reading to the manufacturer’s specified values. Significant deviation indicates a faulty probe. Ensure the probe is at room temperature for accurate baseline testing.
- Check Control Board Connections: Trace the probe wiring back to the main control board or relevant PCB. Inspect the connections on the board for the corresponding temperature probe inputs. Loose or corroded terminals here can also trigger the alarm.
- Replace Faulty Probe: If visual inspection, continuity tests, or resistance measurements confirm a faulty probe, it must be replaced. Source an original equipment manufacturer (OEM) UNOX temperature probe specific to your CHEFTOP/BAKERTOP MIND.Maps™ model. Carefully disconnect the old probe and install the new one, ensuring proper seating and connection.
- Reassemble and Test: Once the new probe is installed and all connections are secured, carefully reassemble any panels removed. Reconnect the unit to its main power supply. Power on the oven and monitor for the AS04-AS05 error. Run a diagnostic cycle or a short cooking program to verify stable temperature readings and error-free operation.
- Professional Assistance: If the error persists after performing these steps, or if you are unsure about any procedure, it is highly recommended to contact a certified UNOX service technician. There might be a deeper issue with the control board or a complex wiring fault.
Common Questions:
Q: What does the AS04-AS05 error specifically mean on my UNOX CHEFTOP/BAKERTOP MIND.Maps™?
A: The AS04-AS05 error code signifies an alarm condition related to the cooking chamber’s floor (AS04) or ceiling (AS05) temperature probe. This indicates a potential malfunction, disconnection, or short circuit in the sensor or its wiring, preventing accurate temperature monitoring.
Q: Can I continue to use my UNOX oven with the AS04-AS05 temperature probe alarm?
A: No, it is strongly advised against using your UNOX oven with an active AS04-AS05 alarm. Operating the oven without accurate temperature feedback from these critical probes can lead to inconsistent cooking results, potential food safety issues, and could further damage the unit.
Q: How can I prevent temperature probe failures in my UNOX CHEFTOP/BAKERTOP?
A: Regular preventive maintenance is key. Ensure the oven is cleaned according to manufacturer guidelines to prevent residue buildup around probes. Avoid aggressive cleaning agents that could damage wiring. Periodically inspect probe wiring for wear and tear, and address any issues promptly to extend their lifespan.
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.