Heating is off but upstairs radiators are warm ??

littlemissfrugal

I have turned our heating off at the timer box and the thermostat is on zero but for some reason our radiators upstairs keep getting warm, which in this weather is unbearable, the only solution I have found so far is to turn them off individually. Can anyone explain please

macman

Motor valve sticking partially open maybe? If there's hot water getting into the circuit then it's going to rise to the top rads.

LeeSouthEast

I had this in my old house. Changing the solenoid to manual, giving it a bloody good thump, then setting it back to auto and turning the central heating on and off again used to 'fix' it.

EliteHeat

Reverse circulation.

ariba10

You do not say what system you have?

Is it Motorised valves, Diverter valve or pumped Central heating with gravity Hot water?

Feline_friendly

I am having this problem too! Only all our rads were getting warm. Ours is a combi boiler. and was serviced by British Gas just a few weeks back! Looks like we will have to call them out again...we are on the homecare plan.

macman

Feline_friendly wrote: »

I am having this problem too! Only all our rads were getting warm. Ours is a combi boiler. and was serviced by British Gas just a few weeks back! Looks like we will have to call them out again...we are on the homecare plan.

Divertor valve possibly.

jonesjw

Hot water rises, therefore can circulate by convection to the upstairs radiators only.
If the pipe comes out of your boiler, goes UP to a pump & continues going directly UP to the upstairs radiators without any motorised valves in the way, this is the likely cause of the problem.
I had this in my first ever house, so I switched the affected upstairs radiators off in summer at the radiator valves (don't do this to all the radiators).
Theoretically, a short down loop in the pipe could fix this.