TR2852 Error on K2 Pro after printing finished

Flagship K Series
1

In the last week or so, I’ve been getting the “TR2852 error filament dectector triggered abnormally - there may be filament clog between extruder and cfs”, but there is no jam. This is popping up after a print is finished and the filament has already retracted and yes, I checked - there is no filament in the extruder or nozzle.

Any idea why? Just a firmware bug? I click on “okay” and it clears, but it’s annoying.

2

How is the spring in the cfs’s buffer? I’ve read that sometimes it can bend slightly and throw codes

3

That was on the early CFS units. I replaced the spring on my 15-month old CFS, but the 4 month old one on the K2 Pro has not had that issue.

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