Hello there.
My NSE class 50 (50002) also made a very high pitched and annoying screeching noise. I found after removing the body that the fan was either loose or was scraping across the housing itself. Be worth looking at that to cross it off the list.
Cheers
My NSE class 50 (50002) also made a very high pitched and annoying screeching noise. I found after removing the body that the fan was either loose or was scraping across the housing itself. Be worth looking at that to cross it off the list.
Cheers