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Blockage system does not recognize all sensors on Setup.
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Sensor setup not done with machine stationary and fan off.
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Stop machine. Turn fan off and perform Blockage/Setup Sensors.
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Sensors not connected into slave sequentially.
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Reconnect sequentially.
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Damaged slaves, slave-to-slave harness, or sensor wires.
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See your John Deere dealer.
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No blockage warning.
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Incorrect setup.
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Verify blockage sensor setup identified correctly with top and bottom primaries on Display (Air Cart Blockage).
Verify each primary correctly identified as being fed by front, rear, and/or middle tank in Air Cart Setup on display.
Verify all blockage sensors detected by system (Blockage Setup).
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Single-shoot from two or more tanks.
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Sensor may not detect if product stops flowing from one tank if application rate for that tank is much lower than the rate for the remaining tanks (i.e. canola and fertilizer).
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Static electricity causing noise on sensor wires.
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Inspect grounding harness and sleeves to verify all connections made.
Inspect grounding wires for damage.
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| Symptom |
Problem |
Solution |
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One or more secondaries are blocked.
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No product flow.
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Tank empty, fill with seed.
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Meter segment and/or product run blocked.
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Clean out meter segment and/or unblock product run.
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Sensors or header incorrectly identified with top or bottom primaries.
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Correct Setup, Blockage Information.
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No blockage found.
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Perform blockage sensor test to determine if sensor is bad. See TESTING BLOCKAGE SENSORS in Blockage Warning section.
Increase the reaction level in Blockage Setup.
Inspect sensor for inside wear. Replace if worn.
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