Error Code
medium
Convotherm C4 – Poor Cleaning Results
On your Convotherm 4 C4 floor-standing models unit, poor cleaning results typically…
Convotherm C4 - Error E22.5.x: Limited Functions Due to Core Temperature Probe Issue
Caution / Monitor Closely
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 Convotherm 4 C4 floor-standing models unit, error code E22.5.x indicates limited functionality due to an issue with the core temperature probe. This means Delta-T cooking and sous-vide functions are unavailable, and the unit operates in emergency mode. The problem typically stems from a faulty probe, a loose connection, or damaged wiring between the probe and the main control board.
Technical Details
Repair Steps:
- Safety First: Disconnect Power. Before performing any checks or repairs, always turn off the main power supply to the Convotherm 4 C4 unit and unplug it from the wall outlet to prevent electrical shock.
- Inspect Core Temperature Probe Connection. Locate the core temperature probe connection point, usually near the cooking chamber or where the probe plugs into the oven. Ensure the connection is secure, clean, and free from corrosion. Disconnect and re-connect the probe to ensure good contact.
- Test Core Temperature Probe Resistance. Using a multimeter, measure the resistance of the core temperature probe at room temperature. Refer to your Convotherm 4 C4 service manual for the expected resistance values for the specific probe type (e.g., NTC or PT100/PT1000). A reading outside the specified range indicates a faulty Core Temperature Probe requiring replacement.
- Check Wiring Continuity. With the power still off, use a multimeter to check for continuity in the wiring harness running from the core temperature probe connector back to the main control board. Look for any breaks, pinches, or signs of heat damage. Repair or replace any damaged sections of the Wiring Harness.
- Examine Main Control Board Connections. Inspect the corresponding connection points for the core temperature probe on the Main Control Board. Ensure all pins are straight, and the connector is fully seated. Look for any signs of burn marks or damage on the PCB itself. If the probe and wiring are confirmed good, a faulty control board may be the culprit.
- Restore Power and Test. After performing checks or replacing components, re-assemble the unit, restore power, and attempt to use a cooking function that utilizes the core temperature probe. Monitor for the E22.5.x error and check if the Delta-T and sous-vide functions are now available.
Common Questions:
Q: What does error E22.5.x mean on my Convotherm 4 C4?
A: Error E22.5.x on Convotherm 4 C4 floor-standing models indicates a problem with the core temperature probe, leading to limited functions like Delta-T cooking and sous-vide being unavailable. The oven operates in emergency mode.
Q: Can I still operate my Convotherm 4 C4 with an E22.5.x error?
A: Yes, the unit will operate in emergency mode, allowing general cooking functions. However, any cooking methods requiring the core temperature probe, such as Delta-T or sous-vide, will be disabled.
Q: How do I test the core temperature probe on my Convotherm 4 C4?
A: To test the core temperature probe, first disconnect power to the oven. Then, use a multimeter to measure the probe’s resistance. Compare your reading against the specified resistance values in your Convotherm 4 C4 service manual to determine if the probe is functioning correctly.
When to call a technician
Consider calling a certified technician if:
- The error keeps coming back after you've tried the steps above.
- You're not comfortable doing the checks or repairs yourself.
- You notice unusual noise, smell, or behaviour.
- Equipment is under warranty and you want official service.
- You need the unit back in service quickly with minimal downtime.