Pump staying on at night. Faulty PCB relay or HPA2 m/switch - or ?

[Riley]

But if it’s not just a valve then the boiler becomes uneconomical.

 

[Harvest Fields]

So they need an engineer to diagnose properly. Then they go from there.

 

[Dmitri]

So they need an engineer to diagnose properly. Then they go from there.

Roger that Harvest. At least it was worth trying to get a diagnosis via the Forum. Thanks everybody for chipping in.