1100 Series Nano Pump Service Manual 33
Troubleshooting and Test Functions 2
Leak Sensor Short
The leak sensor in the nano pump has failed (short circuit).
The current through the leak sensor is dependent on temperature. A leak is
detected when solvent cools the leak sensor, causing the leak-sensor current to
change within defined limits. If the current increases above the upper limit,
the error message is generated.
Probable Causes
• Defective leak sensor.
• Leak sensor incorrectly routed, being pinched by a metal component.
Suggested Actions
✔ Exchange the leak sensor.
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