¶ Issue Description
The active chamber exhaust, located at the rear of the printer, functions as an air damper to isolate or connect the printer chamber with the external environment. This HMS notification appears when the exhaust fails to open or close as intended.
¶ Troubleshooting
¶ Tools, Equipment and Materials
H2.0 Allen key
¶ Fault Isolation Process
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If the active chamber exhaust fails to open/close → Mechanical malfunction
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If the active chamber exhaust operates normally → Hall sensor or magnet malfunction
¶ Solutions
Users may adjust the order of these solutions as needed.
Step 1: Confirm Current Vent State
The status of active chamber exhaust is different in different modes. Therefore, please confirm whether the active chamber exhaust is open or closed before starting troubleshooting.
The H2D air duct system has three modes, and the status of the active chamber exhaust in each mode is as follows:
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Cooling mode:
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When the chamber exhaust fan is turned on, the active chamber exhaust is open;
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When the chamber exhaust fan is turned off, the active chamber exhaust is closed;
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Heating mode:
- Closed state
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Laser mode:
- Open state
Step 2: Check if there is any foreign object stuck in the active chamber exhaust
To check the cause, you can refer to this Wiki to remove the rear panel: Replace H2D Rear Panel
After you have confirmed the status of the active chamber exhaust, you can check if there is any foreign object near the 7 active chamber exhausts and the racks, causing the active chamber exhaust to fail to open or close normally.
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If there is a foreign object, please remove it and try again to see if it returns to normal.
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If the active chamber exhaust is damaged, you can refer to this Wiki to replace the active chamber exhaust: Replace H2D Active Chamber Exhaust
Step 3: Check if the servo and Hall are normal
For the convenience of subsequent troubleshooting, you can refer to this Wiki to remove the purge chute : Replace H2D Purge Chute
The servo connector and the Hall connector share a plug to connect to the MC board. If the active chamber exhaust is normal in the troubleshooting of "Step 1", and you still encounter one of the following two problems:
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active chamber exhaust fails to open/close
You can refer to the following figure to check whether the servo connector is normal. If the connector is loose, it is recommended to plug it in tightly and try again to see if it can return to normal:
If the connector is plugged in tightly, but the active chamber exhaust cannot be opened/closed, it may be that the servo is abnormal. You can refer to this Wiki to replace the right lining cover: Repalce Right Inner Lining/Chamber Heater Unit/Chamber Heat Circulation Fan
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active chamber exhaust can open/close but HMS persists:
Magnet:
You can refer to the figure below to check whether the Hall connection line is normal. If the connection line is loose, it is recommended to plug it in tightly and try again to check whether it can return to normal.
Please also check if the magnets have fallen off. If the magnets have fallen off, you can refer to this Wiki: Repalce Right Inner Lining/Chamber Heater Unit/Chamber Heat Circulation Fan to remove the right lining from the printer and then reattach the magnets.
¶ Equivalent Codes
The following HMS codes represent the same type of issue.
| HMS Code | Description |
|---|---|
| 0300-C000-0001-0001 | Active Chamber Exhaust malfunction: it may be stuck. |
¶ End Notes
We hope the detailed guide provided has been helpful and informative.
If this guide does not solve your problem, please submit a technical ticket, will answer your questions and provide assistance.
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