2 rads working heating not on

[maromija]

hi got a strange problem.. although my CH is switched off i'm getting two rads warming up when the hot water supply comes on... how can that happen?

 

[seco services]

can be afew reasons has it just started or always been doing it ?

 

[muggles]

What is the make & model of your boiler?

 

[maromija]

just started far as I can tell... Baxi solo 2..just changed the fan a couple of days ago with an old one I had that's very noisy, the other one had packed up...can't think that has got anything to with it though

 

[digdilem]

3-port valve sticking and letting a little through to the heating circuit instead of just to the hot water tank?

 

[45yearsagasman]

If there have been no installation pipework alterations eg new rads etc, then it is bound to be a passing zone valve. Could be either 2 or 3 port.

 

[maromija]

Ok I guess you mean the switch that cuts off the heating & directs it to the water... But it's still strange though, one rad is quite close but the other one is far away in the bathroom.. Anyway thanks for the info will check it out