Worcester Central Heating Sensor (PPS) 87161423840
Worcester Bosch 87161423840
Compatible with the following Worcester Bosch boilers:
Worcester CDI 24 BSN NG COMBI
and Worcester CDI 24 OSN NG COMBI
with Worcester CDI 24 OSP LPG COMBI
plus Worcester 24I NG FSN COMBI
fits Worcester CDI 26 FSN NG CONDENSING COMBI
and Worcester CDI 26 LPG CONDENSING COMBI
with Worcester CDI 28 LPG
plus Worcester CDI 28 NG
fits Worcester 28I NG FSN COMBI
and Worcester CDI 35 NG
with Worcester CDI 35 LPG
The thermistor increases the current resistance as it gets colder
The PCB sends a current to the thermistor and can tell whether more or less heat is needed by the relative resistance provided by the thermistor.
