potterton neataheat 16-22 pcb

[patrickh]

Any info how pcb be wired for pump overrun as overrun not working

Jim,

 

[gas4you]

I'm sure that if you have one of the versions of this boiler that has a pump over run, that it is controlled by the boiler stat rather than the pcb.

Most of these did not have this option built in.

 

[Gasguru]

http://www.partsarena.com/baxi/

 

[patrickh]

Thanks Dave
This is a MK11F and it says it has a pump overrun

Jim

 

[ChrisR]

It depends whether it's the 10-16 or 16-22.
The wiring diagrams arew where GG said.
In boilers with PO, the pump supply is taken from permanent live when the boiler is hot, and Switched Live when it's below the PO stat setting.