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Posted by Ian on December 12, 2006 at 13:22:40:
In Reply to: Re: Vaillant VCW sine 18 posted by Steve on February 26, 2004 at 06:04:41:
: : The combi boiler failed to produce hot water. Investigation showed a faulty wax capsule and a pinhole in the changeover valve. Parts were fitted and it worked for a while then was fine on heating but the pump will not start for hot water. All of the microswitches appear to be functional.
: : HW is fine while the heating is on (pump running)
: : I need a circuit diagram and advice please
: ----------------------------------------------
: I also need an Installation & Service Manual for
: Vcw_Sine 18 T3 Wf H
: My Boiler no longer works, pressure kept dropping
: (had to keep filling up with more water)
: Expansion Tanks problem ?
: Clanking noise followed by now more CH or HW
: Primary exchanger scaled/need chem clean or power flush.