Vaillant 103430 sensor ntc (domestic hot water heat exchanger)

Product code: 500153

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Product Description

A Vaillant NTC sensor for ecoTEC VUW (condensing) and Guernsey/Jersey only (condensing) boilers. The sensor or thermistor decreases circuit resistance in line with temperature increases. 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. We carry over 300 of the most in demand parts in-branch and stock over 25,000 spare parts available for next-day timed delivery.

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