38 1100 Series Nano Pump Service Manual
2 Troubleshooting and Test Functions
Restart Without Cover
The nano pump was restarted with the top cover and foam open.
The sensor on the CSM board detects when the top foam is in place. If the
nano pump is restarted with the foam removed, the nano pump switches off
within 30 s, and the error message is generated.
Probable Causes
• The nano pump started with the top cover and foam removed.
• Rear of the module is exposed to strong direct sunlight.
Suggested Actions
✔ Replace the top cover and foam.
✔ Ensure that the rear of the module is not exposed to strong sunlight.
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