1988 Sea Ray 300 WE, 260 HP Mercs, Inboards. I let the house battery go dead by failing to turn the electric on--stupid, stupid, stupid. I have a Aqua Meter CO-Scentry Carbon Monoxide detector that is now diplaying "Fault" and both panels are lit in red. I do not have the manual and can't figure out how to reset the thing. Any help is appreciated.