Boiler only firing for hot water, valve not moving

[Tryingit]

Hi all.
The boiler is suddenly only firing up for the hot water but not the heating. The 3 port valve doesn't move position when the heating is switched on. When I click it over into the heating position the hot water pipe heats up but the boiler doesn't fire up unless we put the hot water on.
(The corgi 3 port valve is 17 months only, and the heating programmer is a year old).
Thanks in advance.

 

[Deleted member 267285]

(The corgi 3 port valve is 17 months only, and the heating programmer is a year old).
Thanks in advance.

Could be your problem. Probably the motor used.

 

[Tryingit]

Is that the corgi thing? Sorry excuse my ignorance. I must admit we went cheap with it as we thought we would have started building work by now as we're getting a completely new set up.

 

[terryplumb]

The 3 port valve has a motor inside it ,and they fail. The valves default position is domestic hot water.

 

[Tryingit]

The 3 port valve has a motor inside it ,and they fail. The valves default position is domestic hot water.

Thank you. So something electrical inside has likely failed? As even when the valve is manually put into the heating position the boiler doesn't kick in. Again, apologies for my ignorance.

 

[terryplumb]

Manually operating the valve only opens the gate so water can flow to both heating and hot water cylinder ,it doesn't fire up the boiler. It's main function is for draining and filling the system up.

 

[Tryingit]

Manually operating the valve only opens the gate so water can flow to both heating and hot water cylinder ,it doesn't fire up the boiler. It's main function is for draining and filling the system up.

Thank you. Much appreciated