Error Code
medium
Convotherm C4 – Poor Cleaning Results
On your Convotherm 4 C4 floor-standing models unit, poor cleaning results typically…
Convotherm C4 - Error E22.4.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 E22.4.x indicates a problem with the core temperature probe system, leading to limited functionality. This typically means the unit cannot perform cooking modes requiring precise core temperature or sous-vide measurements due to insufficient measuring points. Inspect the core temperature probe for damage, check its connection, and verify the probe's functionality for accurate readings.
Technical Details
Repair Steps:
- Inspect the Core Temperature Probe: Carefully remove and visually inspect the core temperature probe for any visible damage such as bends, cuts in the cable, or corrosion on the tip. Ensure it is clean and free of food debris that might interfere with contact or insulation.
- Check Probe Connection: Verify that the core temperature probe is securely plugged into its receptacle within the cooking chamber and that the connector on the control board (often located behind the service panel) is firmly seated. Loose connections are a common cause of intermittent readings.
- Test Probe Functionality: If you have access to a multimeter, you can measure the resistance of the core temperature probe. Refer to your Convotherm 4 C4 service manual for the expected resistance values at ambient temperature. Significant deviations indicate a faulty probe. Ensure the oven is powered off before performing electrical tests.
- Verify Probe Insertion & Use: Ensure the probe is correctly inserted into the food item according to manufacturer guidelines when attempting core temperature or Delta-T cooking. Incorrect insertion or using a damaged probe can trigger this error.
- System Reset: After inspecting and re-seating all connections, perform a hard reset of the unit by switching off the main power supply for at least 5 minutes, then power it back on. This may clear temporary sensor glitches.
- Professional Service: If the error persists after these checks, the core temperature probe itself may be faulty or there could be an issue with the main control PCB’s input circuit. Contact a certified Convotherm service technician for further diagnostics and potential replacement of the core temperature probe or control board.
Common Questions:
Q: What exactly does error code E22.4.x on my Convotherm 4 C4 signify?
A: Error code E22.4.x indicates an issue with your unit’s core temperature probe system. It means the oven cannot reliably detect or utilize enough measuring points from the probe, thereby restricting advanced cooking functions that rely on precise core temperature or sous-vide control.
Q: Can I continue to use my Convotherm 4 C4 oven even with the E22.4.x error?
A: Yes, in most cases, you can still use your oven for standard cooking modes that do not require core temperature probe input, such as convection or basic steam cooking. However, specific functions like Steam Delta-T, Combi-steam Delta-T, and Hot air Delta-T cooking will be unavailable.
Q: How can I troubleshoot the core temperature probe myself before calling for service?
A: You can start by visually inspecting the core temperature probe for any physical damage or cleanliness issues. Ensure its connection point in the oven chamber is secure. If you have a multimeter and expertise, you can check the probe’s resistance against the values specified in the Convotherm service manual (with power off). A loose connection or faulty probe are common culprits.
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.