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Q: After changing initially, why is my moisture reading locked on the same percentage?
Question: After changing initially, why is my moisture reading locked on the same percentage?
Answer: When the moisture reading isn't changing, this is most likely being caused by the EMU motor not turning - therefore grain is stagnant in front of the moisture sensor.
If the fuse is good, the next consideration is to ensure the EMU battery cable is providing 12 Volts to the EMU control cable on the 2 pin connection into the fused line. If not, be sure that the 30 AMP fuse on the EMU battery power cable is still good. Also, take the battery power connection and plug it directly to the EMU motor. The motor should turn, ensuring that it is good.
If the motor is good, remove the cover to the EMU - you'll need to remove two 1/4'' nuts to access the proximity switch. To adjust the proximity switch, turn the screw clockwise until the EMU motor turns. Now, turn the set screw counter -clockwise three whole revolutions to set the sensitivity correctly. If the switch never turns the motor on, the switch is the culprit. This video may be of assistance in adjusting the proximity switch.
If the LED light on the proximity switch comes on but the motor doesn't turn then the relay may likely need to be replaced. The relay (PN 3100128) is external on moisture module PN 4000158 and integrated into the new module (EMU control cable 4001539-3) so the module itself may need to be replaced.