Convotherm C4 - Error E22.2.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 E22.2.x signifies a problem with the core temperature probe, leading to disabled Delta-T and probe-controlled cooking functions. This typically indicates a faulty probe, a disconnected cable, or insufficient measuring points, necessitating a diagnostic check of the probe and its connections. To fully restore all cooking modes, the core temperature probe assembly often requires replacement.

Can't fix it yourself?

Our certified technicians can help you on-site.

Technical Details

Repair Steps:

  1. Isolate and Power Down the Unit: For safety, always disconnect the Convotherm 4 C4 from its main power supply before performing any inspections or maintenance. Allow time for the oven to cool if it was recently in use.
  2. Inspect Core Temperature Probe Connections: Locate the core temperature probe’s connection point, usually at the front or side of the oven cavity or behind a service panel. Check for any loose, corroded, or damaged wiring where the probe connects to the main control board or an intermediate connection block. Secure any loose connections.
  3. Examine the Core Temperature Probe Visually: Carefully inspect the probe itself for any physical damage, bends, cracks, or signs of wear and tear. Ensure the probe tip is clean and free of food debris or carbon buildup, which can interfere with accurate readings.
  4. Perform Resistance Measurement (Advanced): Using a multimeter, measure the resistance of the core temperature probe. Consult the Convotherm 4 C4 service manual for the expected resistance values at room temperature and other specific temperatures for your model’s NTC or PT1000 sensor. Deviations indicate a faulty probe.
  5. Check for Water/Moisture Ingress: Inspect the probe’s entry point into the oven cavity and its cable for any signs of water or moisture ingress, which can short circuit the sensor or its wiring.
  6. Replace the Core Temperature Probe: If visual inspection, connection checks, or resistance measurements confirm a faulty probe, it must be replaced. Ensure you use a genuine Convotherm replacement core temperature probe designed specifically for the Convotherm 4 C4 floor-standing models to guarantee compatibility and accurate operation.
  7. Verify System Operation: After replacement, restore power to the unit and test all cooking functions, paying close attention to Delta-T and core temperature probe-controlled modes, to ensure the error has cleared and full functionality is restored.

Common Questions:

Q: What does error code E22.2.x signify on my Convotherm 4 C4?

A: Error code E22.2.x on your Convotherm 4 C4 floor-standing models indicates an issue with the core temperature probe, leading to a limitation of specific cooking functions, particularly those requiring Delta-T or core temperature monitoring.

Q: Can I continue using my Convotherm 4 C4 oven with an E22.2.x error?

A: Yes, the oven will still operate, but specific advanced functions like Steam Delta-T, Combi-steam Delta-T, Hot air Delta-T cooking, and any cooking reliant on the core temperature probe will be unavailable. It’s recommended to resolve the issue for full functionality.

Q: How can I prevent core temperature probe issues like E22.2.x in the future?

A: Proper handling of the probe, avoiding bending or impact, regular cleaning to prevent residue buildup, and ensuring connections remain secure can help prolong the probe’s lifespan. Periodic calibration checks by a qualified technician can also be beneficial.

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.

Need Professional Help?

Our certified technicians can help you on-site.

Other C4 Error Codes

🔧 Fix this Error - Call Pro