This error occurs when the pressure switch is closed while the pump is off. Usually fixed by turning the adjustment on the pressure switch clockwise 1/2 turn and reset the breaker. Try it for a while; if the FLC returns, you may need to adjust it again. Keep the adjustments small.
It could also need a new pressure switch. Most spas use this pressure switch: Arctic Spa Pressure Switch
If you are in Utah or close by, we can send a tech out to take care of this for you. For service, email Support@ArcticSpasUtah.com or call 801-483-1001.
Oct 26, 2026