Your blower motor in your spa stopped working. You have one of three likely problems: your blower motor has failed; the mother board in your control box has blown; or the fuse to your blower motor has blown. This guide shows you how to check and replace the blower motor fuse in your spa control box.
To locate the fuse to the spa blower motor, look for a control panel circuit diagram. This diagram is usually in the control box.
Call the manufacturer and ask them for the location of the blower pump fuse. Note: If you can't locate the circuit diagram, take a picture of the circuit board and sent it to the manufacturer.
Pull the fuse out of the fuse clips. If it's stuck, use a small screwdriver to pry it out gently. Be careful not to drop it into the bottom of the control box.
You could perform a continuity check on the fuse. If it reads zero, the fuse is blown and should obviously be replaced. But even if it shows some reading it may be partially defective and you should replace it with a new one to see if it corrects the problem.
Perform a continuity check on the new fuse to verify it is good.