Rational iCombi Pro - Error 63: Check water connection to the unit

🛑 Critical / Stop Operation
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 63 signifies an issue with the water connection to the appliance, preventing proper operation. This typically points to an insufficient water supply due to external factors like a closed shut-off valve, a kinked inlet hose, or a clogged water filter. Promptly check the water supply line, ensure the tap is fully open, and inspect any external water filtration systems to restore functionality.

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Technical Details

Repair Steps:

  1. Verify External Water Supply: Ensure the main water shut-off valve supplying the RATIONAL iCombi Pro unit is fully open. A partially or completely closed valve is a frequent and easily rectifiable cause for insufficient water flow.
  2. Inspect Inlet Hose: Thoroughly check the water inlet hose for any visible kinks, twists, or physical damage that could restrict water flow. Confirm that the hose is securely connected at both the wall tap and the unit’s connection point, with no leaks present.
  3. Examine External Water Filter/Softener: If an external water filter or water softener system is installed in line with the iCombi Pro, inspect its condition. A clogged filter cartridge or a softener system currently in bypass or regeneration mode can severely restrict water flow. Replace filter cartridges as recommended by the manufacturer’s maintenance schedule.
  4. Check Building Water Pressure: Confirm that the building’s incoming water pressure meets RATIONAL’s specified requirements (typically 150-600 kPa or 22-87 PSI). Low building pressure, especially during peak usage times in the facility, can prevent the unit from receiving adequate water.
  5. Inspect Internal Water Inlet Solenoid Valve: With the unit powered off and disconnected from the power supply, a qualified technician should visually inspect the water inlet solenoid valve, usually located near the rear water connection. Test for proper electrical function (e.g., continuity and coil resistance) and check for any mechanical blockages or debris preventing it from opening fully.
  6. Test Water Flow Sensor (if applicable): Some iCombi Pro models may incorporate a water flow sensor designed to detect inadequate water supply. If external factors are ruled out, a faulty flow sensor could be sending an incorrect signal, triggering Error 63. A technician with appropriate diagnostic tools is required to test and replace this component if necessary.

Common Questions:

Q: What are the most common causes of Error 63 on a RATIONAL iCombi Pro?

A: The most common causes for Error 63 are external factors such as a closed or partially closed water shut-off valve, a kinked water inlet hose, or a clogged external water filter. Insufficient building water pressure can also trigger this error.

Q: How can I prevent Error 63 from recurring on my iCombi Pro?

A: To prevent recurrence, regularly check your external water connections, ensure shut-off valves are always fully open, and adhere to the maintenance schedule for your external water filter or softener system. Proactive monitoring of water pressure can also help.

Q: Is it safe to continue using my iCombi Pro if Error 63 appears?

A: No, it is not safe or advisable to continue using your iCombi Pro when Error 63 is active, as it indicates a critical lack of water supply. Operating the unit without adequate water can lead to damage to internal components, particularly the steam generator, and will prevent proper cooking functions.

When to call a technician

For this error, we recommend calling a certified technician. Do not continue operation or attempt repair yourself.

  • Equipment shows a critical or stop-operation fault.
  • You smell gas, burning, or see smoke or sparks.
  • Error returns after following the steps above.
  • You are not trained to work on this equipment.
  • Warranty or safety could be affected by DIY repair.

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Other iCombi Pro Error Codes

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