This video is about The Spa Guy showing How To Diagnose and Replace a Heater that is tripping the Breaker... it is a similar process on all brands... www.HotTubPartsofAmerica.com
I have a Cal Spa 5000 and the circuit board is arcing near the connections at the top where the heater and main power connect. I replaced the heater, but it still trips the breaker and arcs at the top of the board. Do I need to replace the board, there is no error code on the display.