Pleased I managed to find this thread as my Direto after over a year of faultless service has also developed this clicking/knocking noise. It happens with the bike on the trainer and without the b
ike - turning the flywheel by hand.
I have checked that the cassette is on properly and not loose which it is.
I got the trainer in June 2019 so it's well within the 24 month warranty period specified in the manual - it's not as bad as the video link that was posted earlier in this thread but then i haven't taken the cover off yet as I do not want to void the warranty unless directed to do so by the Elite techs.
I have submitted a ticket and sent on a video but yet to hear from them - just wanted to know from others who had this problem what the fix actually was - it seems to be (from the video anyway) from around the fan spindle area - though could be wrong.
Other than that I love the trainer for my trainerroad sessions just a shame that it decides to throw a wobbler at start of trainer season...