I'm working on a Samsung refrigerator (RSG307AA) that is not making ice.
Ice maker sensor checked at about 4 volts (-12 deg F) this matched the display temp and infrared thermometer reading. So thermistor seems fine.
The Ice maker will start to harvest after bypassing fz door light switch with magnet, pressing i/m button for 10 sec and waiting for about 5 min. till it finally decides to harvest.
When the i/m did stop trying to harvest there no water and did not hear the valve activate. the i/m maker must have spun around 5 times before finally stopping. But again no water.
I jumpered neutral to the i/m water valve at the main board and it fed water to the Ice maker. So water valve does work and the water line is not frozen.
I have replaced both the i/m and the main board and it still does the same thing, the ice maker will harvest but will not activate the water valve at the end of the cycle.
Also the customer said it stopped making ice after changing water filter at first, but then after customer said it may not have been making ice before changing filter so not sure...
I'm at my wits end with this thing and at this point my only recourse seems to re-diagnose, maybe I got a defective board or ice maker.
But I guess my question is how does the i/m system signal the board to put N to the water valve? is it all started by a timer on the board that checks the i/m thermistor, and Ice bucket level then runs a program cycle that includes activation of the water valve or is there an actual signal sent by the ice maker to call for water?
Any insight into this matter would be greatly appreciated.