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Glasuni03
Hi, looking for advice from you guys, the plumbing experts. Ever since my old Grundfos central heating pump (blue in colour) packed in over 9 months ago the local plumber replaced with the grundfos Alpha 2. It's been a nightmare truth be told!
the radiators have been banging which I've been told is down to expansion which I don't accept now as it never stops when the heating is on? There is the odd time that constant banging at the trv side in one radiator for 20-30 seconds
The alpha2 has an auto adapt which I believe works on the basis of how much hot water required it automatically increases the pressure. Only problem is when on auto adapt the rads downstairs and one in the bathroom doesn't heat?
When the pump is set at rating 2 it heats the house but we get the awful noises.
when hot water and central heating on at same time rads downstairs get hot at top but stone cold at bottom
even when the try says rad is not required to heat up due to temp in the room there is the banging noise/ticking noise when stone cold? Is this normal too?
Having looked at the Grundfos website it says that the Alpha2 shouldn't be fitted on trv systems on setting 2. Why might auto adapt not be working? I have had the system recently power flushed and this is driving us mad
any feedback somebody could offer I would be very grateful
the radiators have been banging which I've been told is down to expansion which I don't accept now as it never stops when the heating is on? There is the odd time that constant banging at the trv side in one radiator for 20-30 seconds
The alpha2 has an auto adapt which I believe works on the basis of how much hot water required it automatically increases the pressure. Only problem is when on auto adapt the rads downstairs and one in the bathroom doesn't heat?
When the pump is set at rating 2 it heats the house but we get the awful noises.
when hot water and central heating on at same time rads downstairs get hot at top but stone cold at bottom
even when the try says rad is not required to heat up due to temp in the room there is the banging noise/ticking noise when stone cold? Is this normal too?
Having looked at the Grundfos website it says that the Alpha2 shouldn't be fitted on trv systems on setting 2. Why might auto adapt not be working? I have had the system recently power flushed and this is driving us mad
any feedback somebody could offer I would be very grateful