Electrician verified that power was good. Heater board has a burned wire/circuit (red wire going to main board). Will replacing heater board potentially resolve problem? Spa heats properly, just no airflow. There is no lock set and no obstructions to speak of. Please advise.

Yes, the heater board can stop other things from working, especially the red wire to the main board.

Good Luck

I cleaned off the red jumper wire and plugged back in and now everything is working again. I am wondering though if I should still replace the heater board as a precaution? Something sizzled the wire and turned the circuit black and I am afraid that it is just a matter of time before it happens again. On the other hand, I am thinking why spend the money if it's working.

I would replace that red wire and I would leave the heater board in until it fails.

Good Job