Error Code
high
Rational iCombi Classic – Error 1033.x: System Health – Software or Bus Communication Fault
On your iCombi Classic unit, error code 1033.x indicates a critical system…
Rational iCombi Classic - Error 90: Perform Calibration
Warning / Can Continue
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 iCombi Classic unit, error code 90 indicates that a system calibration procedure is required. This often follows a component replacement or a significant software update. Executing the calibration ensures optimal performance and accurate sensor readings.
Technical Details
Repair Steps:
- Access Service Mode: Ensure the unit is powered on and in standby mode. Access the Service Menu on your iCombi Classic by navigating through the touch display. The exact path may vary slightly but typically involves a combination of pressing a specific icon or accessing the settings menu and then entering a service code (consult your operating manual for the specific sequence).
- Locate Calibration Options: Within the Service Menu, navigate to the “Calibration” or “Adjustment” section. This area contains options for calibrating various sensors and components of the combi oven.
- Perform Guided Calibration: Follow the on-screen prompts to perform the required calibrations. This may include:
- Air Temperature Sensor Calibration: For accurate oven chamber temperature readings.
- Core Temperature Probe Calibration: To ensure precise internal product temperature monitoring.
- Humidity Sensor Calibration: For accurate steam and humidity control.
- Steam Generator Level Calibration: To ensure correct water levels for steam production.
Complete each step as directed by the iCombi’s intelligent system.
- Save and Exit: Once all necessary calibrations are completed, ensure you save the settings before exiting the Service Menu. The system will typically guide you through this process.
- Test Operation: After calibration, perform a test cook cycle to verify that the oven operates correctly and that temperature and humidity controls are stable and accurate. The error code 90 should now be cleared.
Common Questions:
Q: Why does my iCombi Classic show error 90 – “Perform calibration”?
A: This error indicates that your unit requires a system calibration. It often appears after a major component replacement, a software update, or if the unit’s sensors have drifted over time, requiring adjustment for optimal accuracy and performance.
Q: Is it safe to continue using the iCombi Classic without performing calibration?
A: While the unit might still function, it is not recommended for professional kitchen environments. Operating without calibration can lead to inaccurate cooking temperatures, inconsistent humidity, and improper core temperature readings, resulting in suboptimal cooking results and potential food safety concerns.
Q: Do I need a specialized technician to perform the calibration for error 90?
A: For many routine calibrations, the iCombi Classic offers guided procedures accessible through the service menu, which trained kitchen staff can perform. However, for complex issues or if the calibration repeatedly fails, it is advisable to contact a qualified Rational service technician to ensure proper diagnosis and resolution.
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.