I have a Sundance hot tub, model year 2000.

Recently message code FL 1 started flashing.
Then every once in a while, the jets stopped turning on.
I could hear a clicking when they tried to, but nothing.

Now the jets aren't turning on at all and the tub is losing temperature.

We've been having a lot of varied winter temperatures and the tub was losing a lot of moisture through the cover for a while. I've filled it up to the appropriate water depth. I just replaced the filter. Flipped the breaker. And I don't know what else to try.

Any ideas?