HMS 0700-2000-0002-0027: Resistance, Switch to Buffer
LayerWalker is a participant in the Amazon Services LLC Associates Program. We may earn a commission when you buy through links on our site, at no extra cost to you.
HMS 0700-2000-0002-0027 means the AMS A slot 1 assist motor is overloaded because of excessive resistance in the filament tube between the filament track switch and the filament buffer. It is the downstream half of the pair, and it completes the set of codes that divide this path into named sections.
Eight codes, each pointing at one stretch of tube. Used properly, that turns a vague friction complaint into a thirty-centimetre search.
Where to buy
Use a genuine low-friction tube on this run
Capricorn-grade PTFE in a two-metre length is tighter and smoother in the bore than generic tube, which matters most on the sections that feed a buffer. It is the one place in the path where paying for the better tube shows.
Take the strain off the ends
A cable gland or strain-relief grommet where the tube passes through a panel stops the edge of the hole working as a knife. Panels are not chamfered for tube, and the tube loses.
Shim the fitting if the tube bottoms out short
Thin nylon washers under a bulkhead fitting let you set how deep the tube seats, which matters when a replacement fitting is a fraction shorter than the original. Get an assortment with M6 in it: a step inside a joint stalls a motor as reliably as a kink does.
Then close the loop on the whole family
With all eight segment codes documented, the next stall tells you where to look before you open anything. That is the point of reading the message rather than guessing.
How HMS 0700-2000-0002-0027 pairs with the upstream code
From the unit to the switch is HMS 0700-2000-0002-0026. One switch, two sides, two codes.
The moving section beyond the buffer
Past the buffer you are into HMS 0700-2000-0002-0021, the only length that flexes during a print. Unit generations differ — see AMS versus AMS Lite and multi-colour printing.
HMS 0700-2000-0002-0027 FAQ
Is this the same fault as 0026?
Same kind, other side of the switch. Check what the message names.
Is premium tube worth it here?
On the runs feeding a buffer, yes. Elsewhere it matters less.
What if I see several of these codes?
Then the whole path is tight. Read 0025 as well.
Do I need to recalibrate afterwards?
No. Run a load and unload cycle to confirm the slot works.
The simplest code in that group is about storage. HMS 0500-0300-0002-0020 means the USB drive has no room left to cache print files, and it is the one you clear in a minute.
LayerWalker
Print defect diagnosis, calibration procedures and parts that actually fit. Corrections welcome through the contact page.
