I have a scotman ec 105 ice maker which has stopped producing ice because the "bin full" light keeps coming on even though there is no ice in the machine! I have cleaned the sensors, but still no joy. Can you offer any help?
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1. bin full when bin is empty means that the bin control sensor is dirty or need to be replaced. But since your having problems with water over flowing also i would bet that your machine needs a good cleaning. is you water full light on or off? if off and water sump try is full then you need to pull water sensor out and clean or replace it. if water sensor light is on then you need to replace water inlet valve.
is your bin line and dump line tied together if so it could be just ice melting. If not can you here water filling up constantly while machine is off? if so is it running over sump tray into ice bin. if dump valve was stuck open then machine will not make ice.
Check bin full sensors make sure that the wires are making good contact on the board and make sure they are working run your hand between them you should see the bin full light come on the board if not replace the bin full sensors. If the light comes on then replace the board.
The bin full sensors are located behind the water sump tray. Pull the front cover off remove the white plastic guard. Remove the ice deflector grate that is in the water sump tray. Now look where the ice falls down into the bin to the right and left side there is where the bin sensors are you have to pull them sideways you can also open the control panel and look where the bin sensor wire runs and follow it. pull the bin sensors and clean the eyes or replace them.
It is a set of eyes located in the very back right and left hand side where the ice drops into the bin. Take some ice machine cleaner and wipe down the eyes. You should be able to pull the holders out to get to them better.
I see you already said you bin sensor light was on. The drop door has a metal tab that waves over a sensor as it opens, if that part when it closes does not tell the board that door is shut the the board thinks the bin is full. I know you already know that but until I can talk to Scotsman on the phone or review their service manual for your model. One good thing about Scotsman is they are very helpful to their customers. Unless the machine is obsolete.