My mother had a new gas condensing conventional boiler fitted in mid-December (Worcester Greenstar), replacing an ancient Baxi. The pump (a Grundfos) was reused from the original system as it appeared to be in good condition and was only about 5 years old. Have just visited her and found that the pump is making a very light rattling noise when it cuts in, best described as like small ball bearings in a tin...she is very deaf so simply hadn't noticed it. It's definitely the pump, as when I turn it down to the lowest speed the noise almost vanishes, when I turn it up to highest the noise is worse.
The system was chemically flushed when they changed the boiler, could this be a bit of debris dislodged and now trapped in the pump, or is it indicative of pump failure?
If it's the former, are the installers likely to accept responsibility and clear/clean the pump at their expense? We were not advised either to leave the pump or to change it, they just reinstalled the old one without raising the issue.
I'm going to call them to discuss but just a little unsure of where we stand on this and what the problem might be.
The system was chemically flushed when they changed the boiler, could this be a bit of debris dislodged and now trapped in the pump, or is it indicative of pump failure?
If it's the former, are the installers likely to accept responsibility and clear/clean the pump at their expense? We were not advised either to leave the pump or to change it, they just reinstalled the old one without raising the issue.
I'm going to call them to discuss but just a little unsure of where we stand on this and what the problem might be.