The evaporator keep freezing up. The first time I took the back panel off and defrosted it the drain was frozen. After I thawed it out and put it back together it worked fine for a month. Then I noticed it wasn't making ice and the temps were higher than they were supposed to be. So I took it apart and thawed it again but noticed this time the drain wasn't frozen. Put it back together and its been about 24 hrs and still not up to temp. So I did some research found about the self diagnostic so I did that and from that it says the following

U-Art telecom error=fault sensor?
F-defrost heater error=fault rated F-defrost?
R-defrost sensor error= fault rated R-defrost sensor

So I'm trying to figure out what parts I need to replace. I think the ice maker is good cause when I push the test button it works fine but it won't dump ice on it's own but I did read that if the temp is to high the ice maker won't dump.