Recently moved into a house - about 3 years old. Heating system is water underfloor on ground floor, radiators upstairs.
About 2 weeks ago got someone out to service the (oil fired) boiler before the winter. He dealt with a small leak at the time, and ended up having to drain the system.
Immediately after, the kitchen UFH didn't work. Seemed likely it was an air blockage so I did some internet searching and found out you need to flush air out by connecting to mains with a hose.
Did this, but realise now I connected mains hose to the return manifold so water flowed in the reverse to the normal operating direction. Can't see this would make any difference, but....
Since then the whole UHF seems messed up. The return manifold is very hot, and the supply manifold is cold. System seems to be running "backwards" although I can't see how that is possible.
Anyone got any bright ideas about what may be happening?
About 2 weeks ago got someone out to service the (oil fired) boiler before the winter. He dealt with a small leak at the time, and ended up having to drain the system.
Immediately after, the kitchen UFH didn't work. Seemed likely it was an air blockage so I did some internet searching and found out you need to flush air out by connecting to mains with a hose.
Did this, but realise now I connected mains hose to the return manifold so water flowed in the reverse to the normal operating direction. Can't see this would make any difference, but....
Since then the whole UHF seems messed up. The return manifold is very hot, and the supply manifold is cold. System seems to be running "backwards" although I can't see how that is possible.
Anyone got any bright ideas about what may be happening?