Error Code
low
Rational CM – Error E24: CombiMaster Error – Software Update Required
On your CombiMaster unit, error code E24 indicates that a software update…
Rational CM - Error E14: Filling Solenoid Defective or Sieve Blocked
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 CombiMaster unit, error E14 indicates an issue with the water supply, specifically a defective filling solenoid valve or a blocked water inlet sieve. This prevents the unit from receiving water for steam generation or cooking. Promptly addressing this is crucial to restore full cooking functionality.
Technical Details
Repair Steps:
- Safety First: Disconnect the CombiMaster from the main power supply and shut off the external water supply valve before beginning any inspection or repair work. This is critical for preventing electrical shock and water damage.
- Verify External Water Supply and Inlet Sieve:
a. Confirm that the external water supply valve is fully open and that your building’s water pressure is adequate.
b. Locate the water inlet connection at the rear of the CombiMaster. Carefully disconnect the water supply hose.
c. Inside the inlet fitting, you will likely find a small mesh filter or sieve. Gently remove it using needle-nose pliers or a small pick.
d. Thoroughly clean the sieve of any scale, debris, or sediment under running water. Reinstall the clean sieve. - Test the Filling Solenoid Valve:
a. Locate the filling solenoid valve. It’s usually a brass or plastic component with two electrical wires and water inlet/outlet ports, positioned before the steam generator or cooking chamber.
b. With the power still off, disconnect the electrical connectors from the solenoid valve.
c. Using a multimeter, measure the resistance (ohms) across the coil terminals of the solenoid valve. Refer to your unit’s service manual for the expected resistance range (typically a few hundred ohms). An open circuit (infinite resistance) indicates a faulty coil, meaning the valve needs replacement.
d. If the coil resistance is within specification, cautiously re-apply power to the CombiMaster (ensuring all other connections are safe and dry). Use your multimeter to check for approximately 230V AC across the solenoid’s terminals when the unit is calling for water (e.g., in a steam cooking mode). If there’s no voltage, the problem lies with the control board or wiring. If there is voltage but the valve doesn’t open (no click, no water flow), the valve is mechanically defective and requires replacement. - Inspect Wiring and Connections:
a. Thoroughly inspect all electrical wiring and connectors leading to the filling solenoid valve for any signs of damage, corrosion, charring, or loose connections.
b. Repair or replace any damaged wiring or connectors. Ensure all connections are tight and secure. - Replace Defective Filling Solenoid Valve:
a. If the solenoid valve tested faulty, replace it with a genuine RATIONAL replacement part. Ensure the new valve is installed in the correct orientation for water flow.
b. Apply a small amount of plumber’s tape to the threaded connections to ensure a watertight seal. - Restore and Test:
a. Reconnect all water lines and electrical components. Restore the main power supply to the CombiMaster and reopen the external water supply valve.
b. Initiate a cooking program that requires steam or water filling to verify proper operation. Observe for leaks and ensure the unit fills correctly.
c. Clear the E14 error code from the display if it persists after rectifying the issue.
Common Questions:
Q: Why is my RATIONAL CombiMaster displaying E14 and not filling with water?
A: The E14 error indicates that the CombiMaster is unable to draw water, most commonly due to a defective filling solenoid valve or a blocked water inlet sieve. These components regulate the water supply to the unit’s steam generator or cooking chamber.
Q: Can I clean the water inlet sieve myself to resolve the E14 error?
A: Yes, if you are comfortable with basic mechanical tasks, you can typically disconnect the water supply and carefully remove, inspect, and clean the water inlet sieve yourself. Always ensure the unit is disconnected from power and water before attempting this.
Q: What is the function of the filling solenoid valve in my CombiMaster?
A: The filling solenoid valve acts as an electrically controlled gate, opening to allow water into the CombiMaster when needed for steam generation or cooking, and closing to stop the flow. If it fails, water cannot enter the system.
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.