Central Heating Problem????????

[derek_robertson]

Brrrrrrrrrrrrrrrrrrrr!!!!!!!!!!!

My heating is playing up,3 out of 11 rads working,have bled all rads.The 3 rads that are working stay hot for a couple of hours,then go cold & then heat back up after 1,2 or 3 hours.The pump & timer are still on,the pipes coming out of 3 port motorised valve remain hot.Anyone got any ideas before I call out an engineer?

Cheers,

Del

[evojkp]

Although I don't advocate its use, but the DIY section of Scoobynet has a lot of plumber and heating type folk frequenting them. Post up their and see if they can help.

I take it you bled the radiators with the pump off?? Have you tried to re-bleed after 30mins? Is there any air present? If it is a combi, do you have sufficient pressure within the heating loop? Possibly just needs a top up. Follow instruction for the boiler. Usually a three way manual valve on the bottom on the boiler.

Probably totally useless info..sorry.

[dad]

yeah if its a combi then water pressure no. 1 target

[derek_robertson]

Thanks for your replies guys,it's not a combi system.Going to try descaler as the system is most probably choked with sludge,it's quite an old system & actually needs replacing. Been looking at condensing boilers,anyone got an opinion on them?

Thanks to Corsa & his heating engineer Chris for info & giving up their time.

cheers

Del

[malky]

Hi Del, I know two guys who work for the gas baord who might be able to sort you out,

They fitted a new system for my mum/dad as a hommer alot cheaper than anyone else.

[derek_robertson]

Cheers Malky,will keep that in mind.

Managed to get old boiler up & running again,there was a blokage on return to boiler.Descale & flush of system should keep it running sweet till springtime,gonna chage system then.

cheers,

Del