Search results

To be clear DHW working correctly Heating not working at all when switched to HTG When switched to DHW, water flowing through both DHW and HTG valves. Initially found the HTG valve switched over and latched to "Open" and thought this was the problem so switched the lever back to "Auto"...

Ollski The spec for the V4043 states that the de energised position for the valve should be OFF but clearly this is not happening since water is passing through the valve when the HTG is OFF. At a guess it looks like it has "failed open" if such a thing were possible ... ? or the wiring is...

Ollski Yes there are two. The DHW works fine. When called, DHW valve opens, boiler and pump operate properly. In design, the flow from the pump is split into two paths, one for the DHW and one for the HTG. When the DHW is on, water passes through both valves. When HTG is called, no...

My daughter has just moved into a property. There is a known CH problem that I am trying to resolve. Hot water works but the radiators also heat up Hot water does not work at all Checks show that the heating zone valve (Honeywell V4043) has been set to manual - permanently on. Setting...