Quote:
Originally Posted by ss#4
okay here is what we have found. put in a second controller resulting in the same blinking. noticed that when the truck is running and atempting to use the defrost the a/c clutch cycles on and off in 3-5 second intervals. should cycle but not that much. So disconnected the power to the a/clutch and now the controller no longer blinks and works well. I would assume the temp controller tells the clutch to cycle. correct? so is this a bad/crossed/shorted wire somewhere?
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You need to check the ac charge and pressure readings.
Low charge will trip the controller.
It has to be recharged and controller reset to work right.