Marquis spa 2008 (220V). Has been running great since I baught it over a year ago (used). Refilled tub last week and overfilled it. Drained water down to proper level and turned on jets without issue- began chemical addition. Next day GFCI trips (I assume the pre-programmed GFCI test). Reset GFCI, jets came on and seemed to be all good. GFCI tripped again next day and now anytime I try to rest GFCI it trips instantly. Have tried new breaker - no change. With new breaker I have tried unplugging all plug-ins from board (pump #1 / #2), ozonator, control panel and LED lights. Still trips even with everything unplugged. Disconnected power wires from circut board and they are hot without tripping breaker.
HELP!!!!!!