Fujitsu AOU18RLXFZ Control Board

It is impossible for your furnace or air handler to even run lest the circuit board is in its proper place and configured for your unit. The control board is designed to command everything including the gas valve, the igniter, the flame sensor as well as the blower all together. You should always be careful when choosing a control board because of the diversity of brands, models and types of systems. A matching board is supposed to have a part number that matches both the brand and specific model of air handler system you have.

Major signs to watch for in a bad control board

Check eBay to see if your control board is in stock!
Before buying or ordering any Fujitsu AOU18RLXFZ part, do your due diligence and make sure of the model number and also make a visual inspection in order to be sure the right control board is being ordered. Replacing the control board is not difficult assuming you have the time and have the proper tools to do it right.
Feel free to download your manual for help.
Check eBay for your control board!