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Mend Heating Valve Motorised

motorised head valve quick question?

Why would a motorised head valve on our central heating refuse to stay in manual?

JUE
January 2011
Hi its a two port honeywell, thanks

jue
January 2011
Hi its a two port honeywell, thanks

Jue
January 2011
What make of valve do you have??

maverick
January 2011

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