20 discussions on HomeOwnersHub about the Honeywell V4073A: what owners asked, what went wrong, and what fixed it.
I think I've got a Switchmaster VA1 Central Heating valve ?See:- at 90 degs :-) )It seems to be almost dead. Gets stuck as it rotates clockwise at the 5 o'Clock and 2 o'Clock positions (as viewed without rotating photo)The only useful info...
Hello allWell it's happened.. CH heating seems to have gone off today: - Glow-worm Flexicom HX boiler, installed June 2008. - The water is heated at the appointed times, but the heating itself doesn't seem to come on.- the radiators do...
It's that time of year when one's thoughts turn to the smoothe running of onesCH system (sad isn't it!)Before I go into all the details I'd just like to get some expert opinion on thesuitability of the the UPS 15-50 in my system.The pump...
A cautionary tale for those investigating probs with their central heating:A couple of years ago I finally tracked down a problem that had had generations of visiting plumbers busy, in frenzied and expensive, radiator bleeding / pump...
Hi,On a 3-port mid-position valve, which is Port A and which is Port B ?The Honeywell FAQ clearly states Port B is for HW and Port A is forHeating, and with no power to the valve it is set for HW-only (PortB).However the uk.d-i-y FAQ says...
Just thought I'd add a few extra thoughts on solving my zone valve problem(s). First off being to correct the part number (Doh!). The second being that the perceived wisdom of replacing the complete valve assembly instead of using the...