Well, the evaporator is iced up again. I'm beginning to think that the drain may be clogging with ice and have read about repositioning the sensor to a different location on the evaporator. In one post the "last run on the suction side" was referenced for a different model. Can someone describe a similar location for the sensor on this model? Also, what are the tests to do at the evap assembly level with respect to the heater and sensor? Do I test these with power on? Do I test these while the unit is in forced defrost? Thanks.