Cold Radiators

21 Sep 2009
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United Kingdom
Hi all

New to this forum so please be gentle.

I'm looking for a solution to this: drained CH system to install 5 TRVs and when I refilled the system, the upstairs radiators are working fine but the downstairs are still cold - any ideas?

The pump appears to be working as there are hot pipes both sides of it (already bled it, aswell as the whole CH system) and so does the motorised valve.

I would also add that both the inlet and outlet pipes to every downstairs radiator are cold, so I don't think it is an airblock in one of the radiators - where else am I likely to get an airlock?
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