Baxi thermistor increases the current resistance as it gets colder The electronic control sends a current to the thermistor and can tell whether an increase or decrease in heat is needed by the resistance provided by the thermistor.
Sensor
Technical specification
Waist Sizeaa77cd57guTypeSensorERP RatingNot ApplicableCompatible WithCOMBI GA 24, COMBI GA 28 and COMBI GA 33Supplier Part Number710056200Brand NameUnbranded