Baxi Central cold radiators

Frosty · Dec 29, 2014

Apologies for posting as have read many similar but none identical. We have a Baxi boiler in kitchen with emersion tank bedroom and open tank in loft. Hot water is fine. A few months ago we had a nail pierce central heating pipe in bedroom, which a plumber repaired. He part drained system, which we have previous had night mares with trapped air in system. Unfortunately our brilliant and patient plumber now retired, he got to know system brilliantly. last time he eventually had to cut pipe to release air and left open pipe with shut off valve near pump which he used to release air lock.

now only 3 radiators upstairs work, none downstairs. It's freezing!
The pump was replaced 2 yrs ago seems to be working ...can feel whirling and all pipes red hot.
Some pins in trvs were depressed ...now released.
how do you work out which is the first radiator in the system when the radiators do not heat to follow to try balancing?
I have bled all radiators ... 2 upstairs had a lot of air.

really not sure what I can try next to establish if balancing problem or air lock. Any advice or help would be gratefully appreciated. Thank you

dancinplumba · Dec 29, 2014

Think your best bet is to call another plumber to it

jtsplumbing · Dec 30, 2014

have a look in loft , make sure that water is in small tank, ball valve may be stuck, if full of water, blockage in cold feed to heating. if ok just because pump is making a noise doesn't mean its pumping. have you tried venting pump ? large chrome screw in center of pump.

Frosty · Feb 22, 2015

jtsplumbing Thanks for replying, very much appreciated, sorry only just seen. blocked pipes was the problem.

Posting to update as always find it annoying when reading forums and no solution when sorted. Finally thinking changing username from frosty to toasty having endured 3 wks with absolutely no heating or hot water!

The problem was a blockage in the pipes due to a build up of gunk in a system filter, pipes had to be cut out and replaced.

Five plumbers later - 4 saying they would phone when able to return never being seen again ...why? Could have had sorted much quicker if not left hanging. So grateful to young plumbers who sorted they were mad busy but turned up 7.00 am in order to fit job in and end our misery. Did a brilliant job and all sorted within 4 hrs.