Spa was working fine. We unplugged it because it was coming a storm. When we plugged it back in,it was like it turned on a little bit and stopped. Spa won't do anything, nothing lights up..its like theres no power.

The power cord may have become saturated with rain water.

the circuit or button has shorted or failed

Check the manufacturer for the code. That will tell you what the malfunction is.

are you sure you didnt plug the blower in the heater outlet on the control box ???
if not i suspect you have a common problem with these units (water intrusion) inside the control box this produces all sort of (gremlins) to happen

The power supply board was damaged from the storm and needs replacing

plug in a bed side light and see is it working and if it is not then the storm has damaged the tramsformer supplying your house

water pumps, can not work for a couple reasons, as long as you hear the motor still attempting to work. One is and most common, is vapor lock as you said, you attempted to fix that issue, as long as you feel comfortable there is no air trapped, then other common problem that fails is the diaphragm is stuck or warn out, that is the part that allows water to pump through, with out air getting in. Try turning pump upside down, after turning off of course, shake lightly, and plug back in a couple times short, meaning just plug in for a sec, then un plug, do this a couple times, sometime if stuck diaphragm, this might un stick it. let me know, i am sure it is one of those two issues. Mike

it should be under the drivers side dash

Leave the wii power brick unplugged from the wall socket for 15 min then try to plug it back in. This worked for me.