The thermistor decreases the current resistance as the temperature increases. The electronic control sends a current to the thermistor and can tell whether an increase or decrease in heat is needed by the resistance in the thermistor.

This Ferroli sensor is a domestic hot water central heating device suitable for use in Combi, Optima, Talent, Hawk and Xignal boilers.  The sensor is employed to increase circuit resistance in line with temperature drops. A boiler's printed control board (PCB) sends a current to the thermistor, deciding whether a decrease or increase in heat is required by reading the relative resistance.  As the UK’s leading parts specialist, Wolseley carry the widest range of spares, stocking all the big name brands for the trade. Now, to give our customers even more support, we’re adding a greater number of specified parts from leading manufacturers into our branches with the introduction of the Wolseley Branch Parts Accreditation Scheme. Many branches will now be Silver and Gold accredited, a sign that they hold more stock than anyone else, so you can be confident you’ll get the parts you need to fix it first time. Fast.

Ferroli
Sensor - 1K Ptc Dhw / CH (Wet)
39800310

Trusted by Tradespeople

Ferroli Sensor - 1K Ptc Dhw / CH (Wet) 39800310

Trusted by Tradespeople

Ferroli
Sensor - 1K Ptc Dhw / CH (Wet)
39800310