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Follow the port valve wires eg the black ones should lead to a 12-14 way choc block strip or wiring centre
Discuss Timer is off but boiler is still operating!! in the USA area at PlumbersForums.net
Thank you so much Shaun! Very helpful of you!Follow the port valve wires eg the black ones should lead to a 12-14 way choc block strip or wiring centre
Thank you so much Shaun!!That’s a wiring diagram for your system
If it is Port valve stuck---then we can replace it;Port valve stuck / the micro switch, how capable are you with electrics and do you have a multi meter?
Reply to Timer is off but boiler is still operating!! in the USA area at PlumbersForums.net
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