Commercial Ice Maker False Bin Reading
Sometimes it is just too cold to make ice.
This can be a particularly vexing service call but it is fairly typical to see these symptoms, especially where the ice machine is located outdoors. The machine works fine all day long, but when the ambient air temperature drops overnight, the machine shuts off and the customer complains of insufficient ice production.
Commercial ice making machines rely on an ice bin temperature sensor to sense when the bin is full of ice. When the pile of ice is high enough to touch the temperature sensor, the ice machine will shut off on the assumption that the ice bin is full.
However, if your commercial ice machine is located in an area where it gets chilly, the ice bin temperature sensor may get a false reading and a shut of the ice machine off before the bin is completely full.
The fix is simply to adjust the bin thermostat to a lower temperature.