Carrier Weather Maker not turning on
It sounds like you have a late 80's or early 90's furnace. This unit should have a board in it that has a number of CESO01157, or it could have a HH84AA021 circuit board. Both of these used a flat molex plug and were suceptable to moisture. Shut the power off to the furnace and remove the flat molex plug off of the edege of the board. This will be a white plug about 2 1/2" by about 3/8". Use a flashlight and look inside of it, if you see any corrosion. Get a cup that the plug will fit completely inside of, use a Coca-Cola classic and immerse the plug in it for about 15 min. Remove the plug from the cup and clean off the Coke with plain warm water. Let the plug air dry for about an hour. Make sure to check the mating surface on the board. You can us a dry tooth brush to clean this portion. You should be fine after that.
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