I have just converted my Y plan to S Plan. All seems to workHowever the water circuit has never been 'right'There is an unvented OSO Cylinder in an airing cupboard (in a bathroom)the other side of the house to the boiler.It has a zone...
Hi all.Thanks to the posters who have helped out with my CH design in recentthreads. I have 98% of the hardware in place now. I just need tofinish the returns and pressure test it on Monday. [1] However, Ican't decide on what controls to...
Not DIY but I would welcome your assistance. My new heating system hastwo metal covered Honeywell zone valves. when I was testing it at theweekend, steam was coming from a relief valve. The two Honeywell valvelevers were in the auto...
I came home after new year to find the central heating not working. Itraced it to the microswitch in the CH zone valve (Honeywell V4043H)failing to close when the valve opens. I've ordered a new powerhead forthe zone valve and while waiting...
HiA Honeywell V4043H1056 2-port motorised valve in our CH system hasstuck. I suspect that the synchronous motor has failed.A replacement Honeywell motor seems to cost around =A325. Screwfix do aDrayton motor for around =A313 (page 420 of...