parts cooling fan is going on and off during print.

Hi, The 4028 fan is having a weird behavior. During long prints it goes on and off randomly. When I check the UI, it stays at 100%. Here is a video showing that behavior
Solution:
I had the same thing happening because of a broken wire. redid all three and it worked fine afterwards.
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4 Replies
Heretic_Infidel
Heretic_Infidel4mo ago
According to the slicer, what should the fan speed be? Might also be wordt checking if the fan cabling is ok if you made any changes to it or the connectors.
shifubrams
shifubrams4mo ago
100% I did no change it was working for months. Also, I stopped the print as it failed. And now it has the same behavior. If I put it on it goes on and off randomly
Solution
Achi447
Achi4474mo ago
I had the same thing happening because of a broken wire. redid all three and it worked fine afterwards.
shifubrams
shifubrams4mo ago
Ok I'll open the wire cover and check all the cables inside yes, that was it, broken wire inside the sheath. thanks for your help. i'll mark this as solved