central heating

gav28123

hi looking for some advice on faults with central heating and radiators, heating keeps tripping and loosing pressure ,all down stairs radiators are working and when the heating comes on they work ,they are 7 radiators up stairs and only 2 work tried bleeding them and even took them of and flushed through with water and still havent come on .Can someone point me in the right direction what to do next ,have to get it fixed kids rooms are freezing .
thanks gav

Coveredinbees!!!!

have your thermostatic valves stuck shut (assuming you have them) it happened to my brother

totalsolutions

Combo boilers have a pressure relief valve set to 3PSI. Clean it or replace it. They leak or go to early hence the loss of pressure. Stuck valves - How would that cause a pressure drop...??? Look at the overflow / discharge area outside is it wet?

gav28123

totalsolutions wrote: »

Combo boilers have a pressure relief valve set to 3PSI. Clean it or replace it. They leak or go to early hence the loss of pressure. Stuck valves - How would that cause a pressure drop...??? Look at the overflow / discharge area outside is it wet?

hi yes the discharge area is wet , on the boiler they tell you to keep it at 1.5 bar ,when it goes under that thtas when the shutdown happens . Took all the thermostats of and made sure they werent stuck, so where do go from here british gas ?

gav28123

yes check allthe thermostats and ,thet are not stuck

totalsolutions

Remove the relief valve and clean the rubber seals inside or replace.
Set the pressure higher to 2.5 or 3 what happens. I think there is a release on the relief valve to drop the pressure too, maybe weak/dirty/pitted, etc.


Don't forget this useful site

http://www.ultimatehandyman.co.uk/diy/plumbing/pressure_reducing_valve.htm



PRV from £15
https://www.boilersparesuk.co.uk