Need some help please.
I have a Grundfos Alpha2 Water pump and over the last few days it has started to make a deep vibrating noise. At first I took the air out of the rads and I thought this would resolve the issue but is has not. The noise remains and it is intermittent in that it might be noisy or it might not be. Or it may start fine and then turn noisy. It is running on level 3 but obviously turning it down just takes longer for our rads to heat up. So the pump seems to be working in that our rads are coming on fine. Need some help at what the issue is?!?! If it was the pump and say the bearings had gone then I would expect it to be noisy all of the time.?!? Help would be appreciated! Thanks.
I have a Grundfos Alpha2 Water pump and over the last few days it has started to make a deep vibrating noise. At first I took the air out of the rads and I thought this would resolve the issue but is has not. The noise remains and it is intermittent in that it might be noisy or it might not be. Or it may start fine and then turn noisy. It is running on level 3 but obviously turning it down just takes longer for our rads to heat up. So the pump seems to be working in that our rads are coming on fine. Need some help at what the issue is?!?! If it was the pump and say the bearings had gone then I would expect it to be noisy all of the time.?!? Help would be appreciated! Thanks.