Hi guys!

Hope someone can help me with this.
This ice maker runs ok for about 2 cycles (makes ice, goes into harvest and drops ice)
Then the bottom evaporator starts icing up and the top evaporator, which holds the thermostat, does not make ice anymore.
The machine just keeps on running and does not go into harvest.
Interestingly both the top and underside of the bottom evaporator become covered with ice..

btw I have pressure tested the unit over 48hours and weighed in a new charge
Any ideas?
Have a nice day!!