The HVAC Computer is a high-failure item. Too bad the insane engineers turned a once simple mechanical system of levers and ****s into a Rube Goldberg system of complicated, unreliable electronics.
You can start by flexing the electrical connector on the computer just a little. If the computer turns back on and starts working, there may just be broken solder connections on the connector pins inside the module. Those can be resoldered after the covers have been removed. You can also remove and reinstall the connectors. If there's a light film of corrosion on the pins, the scratching action of sliding the connectors off and back on will create a clean shiny spot for it to work for a while.
Sunday, October 2nd, 2011 AT 6:43 PM