HMS 0700-9800-0002-0001: Power Adapter Voltage Too Low
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HMS 0700-9800-0002-0001 means the AMS power adapter voltage is too low, which may result in insufficient drying temperature. The supply is present and the machine has measured it as inadequate, so this is about the adapter or the cable rather than about a missing plug.
A 24 V brick that sags under load looks identical to a good one until something asks it for current.
Where to buy
Feed it from a supply you control
A variable bench supply set to 24 V lets you run the AMS from a known-good source and see whether the message disappears. If it does, the adapter is the fault and you have proved it rather than guessed.
Watch the voltage under load
An inline DC watt meter between the adapter and the AMS shows volts and amps while drying runs. A reading that starts at 24 and drops to 21 when the heater engages is the whole diagnosis in one screen.
Stop losing volts in the cable
A thin or long DC extension drops real voltage at the currents a heater draws. A proper 2.1 by 5.5 mm extension of the right gauge removes that variable, and it is the cheapest thing on this list.
Then decide between brick and cable
Measure at the adapter end and again at the AMS end while it is heating. Equal readings point at the adapter; a gap between them points at the cable.
How HMS 0700-9800-0002-0001 differs from no adapter
An adapter that is not plugged in at all gives HMS 0700-9200-0002-0003. This code means present but weak.
When the room is the real limit
A cold workshop produces HMS 0700-9600-0002-0002 and the same symptom of poor drying. Expectations are set in filament dryers and drying filament.
HMS 0700-9800-0002-0001 FAQ
Can I use a higher voltage adapter?
No. Match 24 V. Higher is how you damage things.
Does cable length matter?
At heater currents, yes. Keep it short and thick.
Is the adapter repairable?
Treat it as a replacement part.
Why only during drying?
Because that is when the current draw is highest.
Connectors cause more faults than the parts behind them. HMS 0700-1000-0002-0004 means an AMS brushed motor has no signal, either from poor contact at the plug or from the motor itself.
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