Hi
I have been reading about this problem with pump overrun and i think that
i have the same problem with my greenstar 24RI.I noticed tonight that when the boiler shut down that it is kettling and also the blue indicator light on the front of the boiler was flashing on and of quickly.It did reset itself after after
about 10 seconds.My boiler setup sounds the same as the person with the 15RI,ie power lead comes from the pump to the terminal box and then on to the boiler,so i'm guessing that when zone valve closes when boiler shuts down the the pump stops running at the same time.My system has 2 2port zone valves, cylinder stat and works from a horstmann twin channel programmer,and a room stat?I did notice quite some time ago when i had a quick look inside the boiler that the neutral core going to the pump connection in the boiler had a crimp put on to it and was not actually connected.Someone said to me that the neutral can be picked up from somewhere else in the system without this core being connected.Hope this makes sense to you?
I have been reading about this problem with pump overrun and i think that
i have the same problem with my greenstar 24RI.I noticed tonight that when the boiler shut down that it is kettling and also the blue indicator light on the front of the boiler was flashing on and of quickly.It did reset itself after after
about 10 seconds.My boiler setup sounds the same as the person with the 15RI,ie power lead comes from the pump to the terminal box and then on to the boiler,so i'm guessing that when zone valve closes when boiler shuts down the the pump stops running at the same time.My system has 2 2port zone valves, cylinder stat and works from a horstmann twin channel programmer,and a room stat?I did notice quite some time ago when i had a quick look inside the boiler that the neutral core going to the pump connection in the boiler had a crimp put on to it and was not actually connected.Someone said to me that the neutral can be picked up from somewhere else in the system without this core being connected.Hope this makes sense to you?