F
fitzyj
Hello all,
I've tried searching the forums and Google and I cant seem to find the answer to my current problem I have with my upstairs heating.
I live in a 3 bed new build and the system is unvented with 2 zones each has their own thermostat. Downstairs is controlled by a turn dial and upstairs is controlled by a Siemens (unsure of model) electronic thermostat. The whole system is controlled by a Siemens RBW29.
Recently one of the motorised valves (for upstairs) failed and stuck open so I had a plumber replace both valves while the system was drained just in case the next one failed like the first.
The heating upstairs and down was working fine after the installation apart from the kitchen rad (was stone cold), this is where the system was drained from so assumed it needed bleeding due to an air lock.
After a few days the kitchen rad was still cold and when bleeding water was coming out along with air and I feel this is where my current issue stemmed from. To rectify the kitchen rad issue I closed the lockshield valve and TRV and removed the bleed valve, all air escaped and I returned the lockshield and TRV back to their original location. The kitchen rad was now heating up.
After thinking I had solved the issue I now have no heating upstairs. The thermostat is signalling for heating but the motorised valve is not signalling the pump to turn on. I only get heating upstairs when the downstairs heating is on and I override the upstairs motorised valve to manual. As soon as the downstairs heating is off the pump turns off and upstairs rads turn cold even though the motorised valve is still in the manual position.
Can anyone advise on this issue?
Apologies for the long post but I've tried to explain and detail everything that's happened so far.
I thought it may be a balancing issue but seeing as the radiators upstairs get hot when I override the motorised valve I'm not sure any more.
Thanks
James
I've tried searching the forums and Google and I cant seem to find the answer to my current problem I have with my upstairs heating.
I live in a 3 bed new build and the system is unvented with 2 zones each has their own thermostat. Downstairs is controlled by a turn dial and upstairs is controlled by a Siemens (unsure of model) electronic thermostat. The whole system is controlled by a Siemens RBW29.
Recently one of the motorised valves (for upstairs) failed and stuck open so I had a plumber replace both valves while the system was drained just in case the next one failed like the first.
The heating upstairs and down was working fine after the installation apart from the kitchen rad (was stone cold), this is where the system was drained from so assumed it needed bleeding due to an air lock.
After a few days the kitchen rad was still cold and when bleeding water was coming out along with air and I feel this is where my current issue stemmed from. To rectify the kitchen rad issue I closed the lockshield valve and TRV and removed the bleed valve, all air escaped and I returned the lockshield and TRV back to their original location. The kitchen rad was now heating up.
After thinking I had solved the issue I now have no heating upstairs. The thermostat is signalling for heating but the motorised valve is not signalling the pump to turn on. I only get heating upstairs when the downstairs heating is on and I override the upstairs motorised valve to manual. As soon as the downstairs heating is off the pump turns off and upstairs rads turn cold even though the motorised valve is still in the manual position.
Can anyone advise on this issue?
Apologies for the long post but I've tried to explain and detail everything that's happened so far.
I thought it may be a balancing issue but seeing as the radiators upstairs get hot when I override the motorised valve I'm not sure any more.
Thanks
James
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