Recent content by dansaund

Spindle moves freely, I checked this today. It can easily be moved by hand. The mechanism inside both power heads does not activate switch 2 which outputs to the orange wire, that in turn outputs to the boiler.

Hi Twgas Fails to fire more often when HW off at programmer, but also sometimes when cyl stat is satisfied. Almost guaranteed to fail To fire CH when HW is off as programmer, maybe 1 or 2 times per week fails when cyl stat is satisfied. Always fires as soon as I touch the manual lever, which...

Tony - First I had the whole valve replaced by a plumber, I replaced the powerhead myself and yes tightened the screws equally little at a time. The problem seems to be that the switch 2 inside is not triggered by the brass mechanism inside.

Hi, Has anyone else seen a problem with new V4073A units recently? My initial fault was a seized valve, and so I replaced the whole valve. After that, intermittently the boiler would not fire for CH, and I noticed that if i touch the manual release valve on the powerhead, the boiler fires...