I have a wet underfloor heating system with a grundfos multi head g pump.
I previously had a grundfos auto ump 3 auto l pump which was faulty and the plumber replaced it with the multi head g.
Previously the floor would get warm after 2 hours. Since the new pump was fitted, the floor only gets warm if the pumpnhas been running 10 hours +.
The pump is set to 3 setting. All other radiators get hot in the house so it can't be a boiler issue.
I'e noticed that this pump switches on and off very frequently. The temperature mixer at the pump is set to 45'c.
Does anyone have idea what could be causing the floor to take so long to hear up compared with the previous pump? Any help would be much appreciated.
I previously had a grundfos auto ump 3 auto l pump which was faulty and the plumber replaced it with the multi head g.
Previously the floor would get warm after 2 hours. Since the new pump was fitted, the floor only gets warm if the pumpnhas been running 10 hours +.
The pump is set to 3 setting. All other radiators get hot in the house so it can't be a boiler issue.
I'e noticed that this pump switches on and off very frequently. The temperature mixer at the pump is set to 45'c.
Does anyone have idea what could be causing the floor to take so long to hear up compared with the previous pump? Any help would be much appreciated.
