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Mend Gas Ch Water

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
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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