Spa Pressure Switch

Spa Pressure Switch
Why is my hot tub shutting down after it is done in the heating cycle?

I checked my spa a few days ago and it was shut down. it was flashing the error code FL. So I turn the breaker off for a little while than turned it back on. the spa worked good after i did this and once it gets up to temperature and the heater is off it shuts down. it does this every time. it seems like when the heater is off the spa shuts down. what would cause this. I put a new pressure switch in 2 months ago so that cant be bad.

Error code FL doesn’t mean anything if I can’t cross-reference it to a manufacture and model number.

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