Rational iCombi Classic - Error 50: Real Time Clock (Date and Time) Issue

ℹ️ 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 50 indicates a problem with the real time clock's date and time settings. This is often caused by a depleted backup battery on the main PCB or a software configuration issue. Resetting the date and time manually or updating the software can typically resolve this.

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Technical Details

Repair Steps:

  1. Check and Set Date/Time: Access the service settings on the iCombi Classic’s display. Navigate to the date and time configuration and manually set the current date, time, and timezone. Observe if the settings hold after a power cycle.
  2. Inspect Main PCB Battery: Power down the unit and disconnect from the main power supply. Gain access to the main control PCB. Locate the small button-cell battery (typically CR2032 or similar) responsible for maintaining the real-time clock. Check its voltage; if below 2.8V, replace the battery with a new one. Ensure proper polarity.
  3. Perform Software Update: A corrupted software setting or an outdated firmware version can sometimes cause RTC issues. Connect the iCombi Classic to the RATIONAL ConnectedCooking platform or use a service USB stick to perform a software update to the latest available version.
  4. Verify Power Supply Stability: Intermittent power fluctuations can sometimes affect sensitive components like the real-time clock. Ensure the unit is connected to a stable power supply and check for any loose connections to the main PCB.
  5. Contact RATIONAL Service: If the issue persists after these steps, there may be a fault with the main control PCB itself. Contact RATIONAL authorized service for further diagnostics and potential main PCB replacement.

Common Questions:

Q: Why does my iCombi Classic keep losing the correct time and date?

A: This is typically due to a depleted backup battery on the main control board, which powers the real-time clock when the unit is turned off. It could also be a software glitch or a faulty main PCB.

Q: Can I continue cooking with error code 50?

A: Yes, error code 50 generally does not prevent the iCombi Classic from cooking. It’s primarily a diagnostic message indicating an issue with the internal clock, which might affect logging or scheduled programs but not the core cooking functions.

Q: What is the typical battery type for the real-time clock on the main PCB?

A: On RATIONAL iCombi Classic models, the real-time clock backup battery is commonly a CR2032 lithium button-cell battery, similar to those found in computer motherboards or remote controls.

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.

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Other iCombi Classic Error Codes

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