Problem with my back boiler?

Sound like you could have Gravity Hot Water system Bax 572 is Very Old

There may be a non-return valve in the Heating Flow pipe near o the Boiler or pump which is letting by,

I don't think that this problem is due to the chap that serviced the boiler, but it would be wise to contact him (assuming he is correctly Registered) to investigate, as he will have more knowlege of the layout of your particular system.

Boiler Repairman - Ipswich
April 2009

Hi, I've checked the airing cupboard, but could not find any boxes apart from the hot water tank. There is no visible boxes anywhere in the house. Could ths be something that is sitting under the floor boards near the bolier?

Michael
April 2009

Your 3 port valve is not moving over fully and is partially stuck on the c/h side, the upstairs rads will get hot because they are the closest to the valve, go to your airing cupboard and look for a box usually silver but can be different colours, it will be above the pump and have 3 pipes and a wire going to it, there should be a little lever on the side try moving this either way to see if you can free it, then try turnin c/h & water on & off to see if you can see it move over, if not get back to me

STE
April 2009