If everything is in order, other causes might be:
12.3.3.1 Dust on the sensor - how to clean
If you start getting a lot of false alarms on filament jams or filament running out, your sensor
might need cleaning. The easiest way is to use a compressed air. There is a dedicated hole
in the x-carriage exactly for this purpose.
Pict. 38 - Access hole for cleaning the filament sensor
12.3.3.2 Extreme light conditions
If you’re printing in
extreme light conditions
(e.g. direct sunlight, very strong LED lighting)
you might also encounter some false alarms. Then consider turning the Filament sensor off
for this specific print in
LCD Menu -
Settings - Fil. sensor [
on
/off]
.
12.3.3.3 Exotic filaments
Some translucent filaments focus more light on the sensor and this can result in weird
behavior. Certain colors like ivory, matte white or lime green can also cause false alarms. If
you’re printing with any of these filaments and you’re getting a lot of false alarms, consider
turning the sensor off
in
LCD Menu - Settings - Fil. sensor [on/off]
.
12.4 Clogged / jammed extruder
Material clogged in the extruder can cause problems with the
printing
or with the
loading
of a
new
filament
.
● Heat the nozzle, remove the filament from the extruder, and cut the rod about 10 cm
above the damaged part.
● The next step is to clean the extruder. There is a service hole on the left side of the
extruder where you can access the hobbed pulley (pict. 39).
● Clean the hobbed pulley, then heat the
nozzle
before re
loading the
filament
.
● If a problem persists, you will have to clean the
nozzle
.
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