I have a 2 storey 3 bed house with 4 radiators upstairs and 4
downstairs. The system is about 15 years old and is a standard boiler
downstairs with a hot water cylinder upstairs.
The upstairs rads all heat up as normal but the downstairs ones remain
stone cold. We have attempted to balance the system which has had no
real effect to the downstairs. The pipes going into the rads
downstairs are hot but there appears to be no flow into the rads as
they are still cold. I've removed 3 of the rads d'stairs and the
water coming out has only a small amount of suspended black debris
coming out. An inhibitor has been added which i picked up in B and Q
which stopped the rads being stone cold but they are still not heating
up - as if there is still no flow through them.
When i took the rads off i turned the TRVs on and there appears to be
good flow coming from them which suggests to me that the pump is
functioning and there is nothing wrong with the supply flow.
When i then put the rads back on and bled them to fill them up they
got hot as they filled but cooled down soon after as if the water
wasn't flowing out of the rads.
The only thing i can think is that there is a block somewhere in the
Can anybody shed some light as the 3Kw heaters are getting
- posted 12 years ago