HMS 0700-2000-0002-0025: AMS Feed Resistance Is Too High
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HMS 0700-2000-0002-0025 means AMS A Slot 1 feed resistance is too high, and it asks you to reduce the feed resistance, decrease the rotation resistance of the spool, and avoid having the filament tube too long or excessively bent. That is three instructions, and they are worth taking in that order.
Unlike the segment codes, this one does not narrow the location. It tells you the total is too high and leaves you to find the share.
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Stop the tube folding at the fitting
A steel spring guard over the tube spreads a bend across a length instead of letting it kink at the point it leaves a fitting. The message names excessive bending explicitly, so this is the part of the list with a part number attached.
Let the spool turn with less effort
A separate spool holder takes the reel off the unit’s own friction surfaces entirely and lets it spin on its own axle. The message names spool rotation resistance explicitly, so this is not an optional extra here.
Tidy the run so it stops adding friction
Assorted heavy-duty ties let you hold the tube in a wide arc at several points instead of one. Supporting it in three places does more than supporting it well in one.
Then deal with the filament itself
Damp filament swells and roughens, and that lifts every number in this chain at once. If the spool has been open for weeks, dry it before you change any hardware.
How HMS 0700-2000-0002-0025 differs from the segment codes
A named stretch of tube, such as HMS 0700-2000-0002-0017, tells you where to look. This code says the sum is too high, which usually means several small contributions rather than one fault.
When the spool is the whole story
A reel that will not turn at all gives HMS 0700-2000-0002-0024. Moisture effects are covered in drying filament and reel quality in the best filament brands.
HMS 0700-2000-0002-0025 FAQ
Which of the three instructions matters most?
Spool rotation, usually. It is the biggest single contribution.
How long is too long for the tube?
Longer than the layout needs. Every extra metre adds drag.
Can I just ignore it if printing works?
It will become a stall. The margin has already gone.
Does filament brand affect this?
Diameter consistency does, and so does how neatly it is wound.
Some codes are about compatibility rather than condition. HMS 0500-0300-0001-0021 means the hardware is incompatible and asks you to check the laser, and no restart will clear it.
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