Sundance Chelsee 780 series spa going into watchdog mode (---)
I drained my tub and replaced both filters and the UV light.....refilled and powered up
Continuously tripped the circuit breaker.
I disconnected the heater and the tub ran fine (minus having a heater)
I replaced the heater an the flow valve
Powered up and it seemed to be fine....next morning was in --- mode .......temp was 114 degrees f (checked with IR temp. sensor)
After cooling down disconnected heater and it seems to be fine (without the heater)
Any help on next steps would be greatly appreciated