R
russblade
I've been told that both above are not working after a test on the boiler- Gas man check,- system has not been run for about 10 years.
My question is, do I change the gate valves on iether side of the pump aswell ? ( it's a Grundfos 15-50 pretty standard I believe)

2.Do I just change the zone valves' (Danfoss HPA2, 2 port type)
actuater or the just the port valve body or play safe and just do every thing,- its going to get pricey I think. Would appreciate as much help as possible, don't ask me how he worked out they both don't work as I was not there at the time ! Would it be possible to,( if there just jammed) to free them with a bit of WD40 ? I am on a tight budget ! many thanks,tried to put some pics in but not sure they're on
Russblade
My question is, do I change the gate valves on iether side of the pump aswell ? ( it's a Grundfos 15-50 pretty standard I believe)

2.Do I just change the zone valves' (Danfoss HPA2, 2 port type)

Russblade