I have an Trane XB80 A/C about 8 years old that suddenly stopped working. At first a loud buzzing came from the unit, then it stopped. I had this problem during the winter with the Heater and found the unit door was on incorrectly. I haven't touch it since. I have changed the air filter and tried to run it but all I get is the buzzing. The LED's are blinking slow and consistent. Is their a way to reset the unit?

Thanks

Kill the power at the breaker,, wait a couple minutes turn the breaker back on... watch the LED for a new blinking code, count the blinks and look on inside of door panel see if it gives you what the code is