Hot rads but no hot water

[Wolfiiee]

Hello all ,

I have nice hot rads - been switched on for a couple of weeks but in all that time no hot water .

the hot water works if the central heating is off .

i have a three way valve above the pump which i'm told will always heat rads first , then should switch to hot water .

the valve was replaced in the summer and worked

any ideas please ?

 

[seco services]

sounds like its wired wrong.
what valve make/model is it ?

 

[Wolfiiee]

Hello all ,

I have nice hot rads - been switched on for a couple of weeks but in all that time no hot water .

the hot water works if the central heating is off .

i have a three way valve above the pump which i'm told will always heat rads first , then should switch to hot water .

the valve was replaced in the summer and worked

any ideas please ?

the valve is a honeywell v4073a1039

 

[keego]

i have a three way valve above the pump which i'm told will always heat rads first , then should switch to hot water . quote]

Not so, a three port should always rest at the DHW position & move to CH or mid position when it's powered up.
Have a look on the body of the valve & you will see that the ports are marked A B & C, B should be for your DHW if its doing your heating then it's been fitted wrong.

 

[Wolfiiee]

i have a three way valve above the pump which i'm told will always heat rads first , then should switch to hot water . quote]

Not so, a three port should always rest at the DHW position & move to CH or mid position when it's powered up.
Have a look on the body of the valve & you will see that the ports are marked A B & C, B should be for your DHW if its doing your heating then it's been fitted wrong.

thanks - it seems to have two postions auto and man open