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Radiator problem?

Can anyone tell me why when my gas ch system is set to hot water only the upstairs radiators come on too (this hasn't always been the case ) ?? Thanks.

Steve
February 2013
Heating, Home Heating SystemsHeating Radiator Problem
Yep that's it thanks you're a star

Steve
February 2013
There's a motorised valve - it can direct the heated water to taps or radiators or - in the middle position - to both.

Sometimes the valve gets stuck.

http://www.wickes.co.uk/3-way-mid-position-valve/invt/443033/

Peccavi
February 2013

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