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Air Conditioning/Heat Not working

Hi. My air system (Marine Air Systems) is not working, when the breaker is turned on it keeps going into test mode, cannot exit test mode no matter what I do. Any ideas?
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Boat Name: King Kong
"Boat + Water = Fun"
Your AC power switch might be stuck. The reason I am saying this is for mine to go into TST mode, I have to hold down the power switch while flipping the breaker on.