Standard Icemaker Constant Harvest
Constantly harvesting ice can be an issue with wiring connections in the door, hinge, or PCB areas. Issue would be with the Hall Sensor. The icemaker does not know when or where to complete its cycle.
Example from LMXS30746
Check the two Hall Sensor wires, GRAY, and YELLOW. Check them individually for continuity from the door hinge connector to the ice maker connector.
-If the icemaker Continues to harvest AND FILL, it is probably a test mode button issue. You will need to check for harness connection issues. In-Door Icemakers will have 3 connection points (Main / Display / or Sub PCB, Left Door Hinge, Icemaker). Freezer Icemakers will have 2 connection points (Main PCB and Icemaker). Make sure no pins are bent and touching and no wires are pinched / shorted.
-Check the test mode circuit and make sure it is not shorted.
-The test mode button circuit should be 5Vdc at all times unless the test button is being pressed. When pressed the voltage drops to 0Vdc.
-Below are examples of test button circuits from LRMVS3006 dual icemaker model.
Freezer Icemaker on Main PCB:
In-Door Icemaker on Display PCB:
Test Switch Voltage Check:
Pressing Button= 0Vdc
Not Pressing Button= 5Vdc
Test Switch Continuity Check:
Pressing Button= Continuity
Not Pressing Button= No Continuity