Error Code
high
Rational CM – Error E9: Potentiometer Time / Core Probe Defective
On your CombiMaster unit, error code E9 signifies a defect in either the time potentiometer or the core temperature probe. This critical fault compromises…
Rational Error Codes
Select Rational Model Series
Code List – 176 error codes found
Error Code
high
Rational CM – Error E8: Potentiometer Cabinet Temperature Defective
On your RATIONAL CombiMaster unit, error code E8 indicates a defective potentiometer for the cabinet temperature. This component is crucial for accurate internal temperature…
Error Code
high
Rational CM – Error E7: Thermo Sensor on PCB Defective
On your RATIONAL CombiMaster unit, error code E7 indicates a defective temperature sensor located on the main control printed circuit board (PCB). This sensor…
Error Code
medium
Rational CM – Error E6: B5 Steam Generator Sensor Defective
On your CombiMaster unit, error code E6 indicates a defective B5 steam generator sensor. This sensor is crucial for monitoring steam production temperature and…
Error Code
high
Rational CM – Error E5: B3 Core Probe Sensor Defective
On your CombiMaster unit, error code E5 indicates a defective B3 core probe sensor. This sensor is crucial for precise internal temperature monitoring during…
Error Code
medium
Rational CM – Error E4: B2 Quenching Sensor Defective
On your CombiMaster unit, error code E4 indicates a defective B2 quenching sensor. This sensor is crucial for monitoring temperatures during the quenching process,…
Error Code
high
Rational CM – Error E3: B1 Cabinet Sensor Defective
On your RATIONAL CombiMaster unit, error code E3 indicates a defective B1 cabinet sensor. This critical sensor monitors the cooking cabinet's internal temperature, essential…
Error Code
medium
Rational CM – Error E2: Heating Blocked by Energy Optimising
On your CombiMaster unit, error code E2 indicates that the heating function is actively being blocked by an energy optimization system, either external to…
Error Code
high
Rational CM – Error E1: External EEPROM Data Error
On your CombiMaster unit, error E1 indicates an external EEPROM data error, signifying a critical fault with the control system's memory. This typically means…
Error Code
high
Rational CM – Error CHnG: Change Polarity of Mains Supply
On your CombiMaster unit, the CHnG error code indicates an incorrect polarity of the mains power supply. This means the electrical wiring connection is…
Error Code
medium
Rational CM – Error H20: Open water tap
On your CombiMaster unit, error code H20 indicates an issue with the water supply, specifically that the water tap is either closed or there's…
Error Code
high
Rational SCC – Error Service 34.X: BUS Communication Error (Control & Motor Components)
On your SelfCookingCenter unit, Service 34.X indicates a critical BUS communication error between the main control board and vital components like the I/O PCB,…