Error Code
high
Rational iCombi Pro – Error Code 7: Self-test Failed
On your iCombi Pro unit, Code 7 indicates a critical internal self-test…
Rational iCombi Pro - Error 51: Check Battery, Replace if Necessary
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 iCombi Pro unit, error code 51 indicates a potential issue with an internal battery, likely for the real-time clock or memory backup. This can cause incorrect time settings or loss of programmed parameters. Inspect the designated battery, test its voltage, and replace it if it's found to be below specifications or non-functional to restore full functionality.
Technical Details
Repair Steps:
- Ensure Safety and Disconnect Power: Before attempting any internal inspection or repair, always disconnect the RATIONAL iCombi Pro unit from its main power supply to prevent electrical shock.
- Access Control Panel and Locate Battery: Carefully open the control panel or access the main PCB compartment, typically located behind a rear or side service panel. Identify the small battery, which is often a coin cell type (e.g., CR2032) or a small rechargeable lithium battery, usually mounted directly on the control board.
- Inspect and Test Battery Voltage: Visually inspect the battery for any signs of corrosion, leakage, or physical damage. Using a multimeter, test the voltage output of the battery. A standard CR2032 should typically read close to 3V. A reading significantly lower than the specified voltage indicates a failing or dead battery.
- Replace the Battery: If the battery is found to be faulty, carefully remove it from its holder, noting its polarity (positive/negative orientation). Replace it with a new battery of the exact same type and specifications. Ensure the new battery is inserted correctly with the proper polarity.
- Reassemble and Verify Functionality: Securely reassemble all panels and reconnect the RATIONAL iCombi Pro to its power supply. Power on the unit and navigate to the date and time settings. Adjust them if necessary. Verify that the unit retains its settings after a power cycle to confirm the issue is resolved.
Common Questions:
Q: What is the typical battery type causing error 51?
A: Error code 51 often relates to a standard coin cell battery, such as a CR2032, or a small rechargeable lithium battery located on the main control board of the iCombi Pro, responsible for maintaining the real-time clock and memory backup.
Q: Can the iCombi Pro still cook with error code 51?
A: While the oven may still be able to perform basic cooking functions, ignoring error 51 can lead to the loss of time, date, and programmed settings, impacting automatic operations and requiring manual reconfiguration after power cycles.
Q: Is professional service required for battery replacement?
A: Accessing the internal components and handling electronic PCBs requires technical expertise. It is highly recommended to engage a qualified commercial kitchen technician or RATIONAL service partner to ensure safe and proper battery replacement without damaging other components.
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.