I have a 22 (two short and two long flashes) error code from the LED on the board for my Carrier Weather Maker 8000 , model # 58WAV070-12.What does this mean and what checks can I do to find the pinpoint the problem?

I haven't looked at the manual, but I'm questioning your blinks. Generally there is always one code which is sort of like a "start of message". Then the trouble code and then the sequence repeats.

Sometimes you have to place the furnace board in a code spit out mode.

Check the inside of the door. They have been listed there on Carrier models.