Main Combi Eco - No CH, DHW working fine.

[FlowGas]

Hi everyone, my next predicament. I've got a Main Combi ECO 25 - no CH, DHW works fine.

I've just replaced the Motor valve - no luck!

Next the whole 3-way Diverter valve? Is not that then what else?

There is no room stat attached.

Any advice is much appreciated.

 

[Billy Bob Bob]

time clock? has to be electrical,have you looped it,if so and motor changed pcb is the only bit in between

 

[FlowGas]

Hey GasMAN, there is no time clock on the Boiler. Looped it? How should I do that?

 

[AllyBongo]

So there's no time controls??? Does the boiler just work off the boiler stat/mode switch?

 

[FlowGas]

Yep, it's in an Out house - turned on when required via the heating and hot water controls.

 

[AllyBongo]

If the controls are seperate, which i imagine they would be, and in the house? Best thing to do would be put a link in between the 2 external control wires in the boiler, they are next to the mains in on the connector block. Im sure it is labeled inside the boiler

 

[harrygashull]

Try link the call for heat,

if pump runs but still no luck then my guess would be a blockage?

If pump doesn't run then PCB