So does this make sense? Pulled the switch panel and found a wire pulled from the high side of the heater switch. Fixed that and the high side worked fine but as soon as I turned it on, it blew water thru the vents. Okay, coil is obviously cracked. Pull the heater tubes off of the heater and water comes out, naturally because the coil is cracked. Pull the heater, the coil and take it to a radiator shop and no leaks. Watched 2 different guys check it. Hose blow by? Nothing on the floor. Called the service manager where I bought the boat and he's stumped. Anybody?
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