I have a Dimension One Arena and I blew a fuse (sc-20). I replaced the fuse and the circulation pump came on and the temp display was on, however when the large pump tried to come on it displayed a fl error. I removed the filter, I checked for air blocks, I checked to see if the pump would rotate which it did. I replaced the fuse again and the same thing happen again... any suggestions??

so your main pump doesn't run right?

Your circ pump does run?

Are you actually getting water flow into the spa from the circ pump?

Circulation pump is running... bubbles come into the water when the new fuse is installed then the fuse blows again when the main pump trys to come on and I get a fl error... the main pump actually makes a noise just before it blows the fuse...

Your main pump is definitely dead.