Trane WCX0360GI00A Defroster controll pannel is showing one blink per second for 30 seconds and then 2 quick flashes is this a normal operation or is this the low delta indication. I gues the question is does the flash pattern start over every 30 seconds reseting itself with a quick double flash? Or could this be related to the crank case not being pre heated for 8 hours befor starting cooling. This is inital start up.