I’m currently experiencing an issue with a Grundfos Alpha+ pump running continuously in my unvented heating system and would appreciate any advice. It continues to run when both the heating and hot water are turned off. When there is demand, the radiators do get hot as expected. Both zone valves appear to work, at least there is resistance when there is no demand and they activate when there is. Resetting or turning the boiler off doesn’t stop the pump either, only turning it off at the wall socket does. Any suggestions?
The boiler is an Ideal Icos HE12 and it displays ‘C’ with the burner light flashing while the pump runs (with both heating and hot water off).
The earliest I can get someone to look at it is early next week unfortunately, but if there are things I could check in the meantime that’d be great.
The boiler is an Ideal Icos HE12 and it displays ‘C’ with the burner light flashing while the pump runs (with both heating and hot water off).
The earliest I can get someone to look at it is early next week unfortunately, but if there are things I could check in the meantime that’d be great.