I have a query about a problem with a Vailant boiler, central heating is under performing and filling loop does not seem to be working. A plumber has been engaged already so just need some general advice.
Do you think the problem with the filling loop is related to the CH problem?
Plumber is talking about trying a diverter valve. Its 200 although he has offered to try it and put the old one back in if its not at fault.
The HW is fine, just CH
Some of the Rads are hot, the ones closest to the boiler, and also one upstairs
(ds bathroom, us bathroom, and ds dining room which is next to the boiler)
I wondered if there was a blockage in the CH system somewhere
after one of those rads
the plumber is taking about a diverter valve, but I dont think its that
Andrew, thanks response. I will do this now. Is it OK to turn them all off at the TRVs
Thanks. All turned off except the the two furthest away, which got hot, albeit a bit slowly, they are still heating up now
what about the filling loop, do you thin that is a separate problem?