HMS 0300-0100-0001-000D: A Heatbed Heating Module Fault Happened Earlier
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HMS 0300-0100-0001-000D means an abnormality happened in the heatbed heating modules before, and that to continue using the printer you should refer to the Wiki to troubleshoot. Read the tense: this is a record of an earlier event, raised so you investigate rather than ignore it.
A code about the past is easy to dismiss, which is exactly why it is worth two minutes now.
Where to buy
Find out when it happened
Check whether it coincides with a power cut, a moved machine or a first high-temperature job. A fault that happened once during a brown-out is a different story from one that happens every time the bed passes 90 degrees.
Measure the bed while it heats
An infrared thermometer pointed at the plate during warm-up shows you whether the bed heats evenly or has a cold corner. A cold corner is a heating-element or connection fault that the printer saw once and may see again.
Check the wiring that flexes
Bed wiring moves on every print, and insulation that has rubbed through gives intermittent faults exactly like this one. Polyimide tape over a chafed section is a proper repair for the insulation; a crushed conductor is not, and needs the harness.
Tidy a repair so it stays repaired
If you do rework a connector, finish it with heat-shrink tubing rather than tape. Tape unwinds in a heated chamber and the fault comes back in a month looking like a new problem. If the bed also caps its temperature, that is HMS 0300-0100-0003-0008.
How HMS 0300-0100-0001-000D differs from the damage code
The code that names damage and a replacement part is HMS 0300-0100-0001-0005, and it tells you to stop immediately. This one lets you continue and asks you to look. Related heating faults sit under HMS 0300-0100-0001-0002.
If it keeps reappearing
Then it is not history any more, and the bed sensing chain is the place to look — background in bed levelling sensors.
HMS 0300-0100-0001-000D FAQ
Can I just clear it?
You can carry on printing, but the message exists because the fault may return.
What counts as an abnormality here?
A temperature reading or heating rate outside the expected envelope, usually briefly.
Does a power cut cause it?
It can. A brown-out mid-heat is a classic one-off trigger.
Should I contact support?
If it repeats, yes, with notes on when it happens.
LayerWalker
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