Jaywalker
06-05-2011, 10:45 PM
This unit shows a microproccesor error code only when ambient temps are 80 degrees F and above on sunny days. I have a Driver in topeka Kansas picking up a load and his unit is showing a code I believe he said was P249. The last time the unit did this he took it to an Carrier Shop and they could not get the unit to throw the code or did they find the problem. He tells me it never happens at night or when the weather is cool. I am starting to think that maybe it has something to do with the ambient temp sensor. He says it only shows it as a microproccesor Error. Anybody have any expierence with this issue?