Radiators too hot!

Joined
26 Feb 2010
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Location
Clwyd
Country
United Kingdom
i have a worcester 280 rsf combi & the radiators are too hot to touch when the heating is on & i have to reset it at least once a day, probably due to it over heating, recently it has had a new pump & expansion vessel fitted could a sensor of some sort be the problem?
 
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It sounds as if the heating sensor is out of tolerance.

A Worcester MI that I was looking at yesterday gave the resistance as between 390 and 33k ohms. Thats not much use!

I think that they are about 25k at room temperature!

Tony
 

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