If you have ruled out defrost failure, you are sure your fan is the problem and all the tests on pg 15 reveal no issues, check for a bad evap relay by checking voltage at E2 to E9 (Neutral) or ground. You should get 120vac when the fan should be running.
If no voltage, you can do a temporary fix by removing e2 wire and splicing it in with the wire connected to E4. This will turn your evap on whenever your compressor runs. Make sure to do this modification with the understanding that you may be connecting the wire back to e2 when you get a new board.
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