Product line: maxx pro
Boiler sensor (-4B4 thermocouple) 
overtemperature (if temperature in boiler is measured at above 130 °C for longer than 5 sec.)

| Possible reason for fault | Corrective action | 
|---|---|
| Foaming in the boiler during cooking due to the use of a non-original Convotherm cleaning agent that has a strong tendency to foam 
 | Use original Convotherm cleaning agent | 
| High salt / mineral content of water | Use suitable water filter | 
| Water very soft and still too many minerals in the water (check water hardness proportionally to conductivity) | Use suitable water filter | 
