Yeah, I was trying to imagine what the battery charger has to do with Carbon Monoxide, (CO) which is a byproduct of burning fuel- CO is what comes out of the tailpipe of your car engine in idling in a closed garage and why thats so dangerous without adequate ventilation. People commit suicide by sitting in closed garages with engines on...
Another source could be a gas heater on a water heater, with leaky exhaust vent, in the garage. If the CI is parked in garage it may detect that CO building up?
Sometimes people will use propane shop heaters to warm a garage, or a tent- see Mr Buddy discussions.
I suppose the CI propane furnace itself might set offa CO detector if the furnace is on and CI is parked in the garage. Have you checked thermostat setting to be certain its not turning on when temp drops? You would hear the fan running in furnace forward of the cabin.
If this is happening in a campground, the propane furnace in the CI is vented to the outside at the right front of trailer, and unless there is an internal leak, it would not set off the CO monitor inside the trailer.
I suppose its possible with the right combination of conditions:
Furnace on, wind blowing gases just right ie along the side of trailer, with window cracked on thst side and ceiling fan on pulling "from"the cabin...to suck enough exhaust into cabin through the window..
For an inside mounted CO monitor to go off...
But thats sort of unlikely in my view and easily checked by closing the window on furnace outlet side, opening window other to see if the CO monitor goes off again...
I suppose its also possible the CO monitor itself has gone bad and is reporting falsely?
Hmm. Thats all I got for spitballing here...
Very interesting.
Lets us know if you figure it out.
