Carbon Monoxide Alarm

[McShank]

We're packing for a week long trip to Colorado and the carbon monoxide alarm keeps going off. The 5er has been sitting closed up for a month in the Phoenix heat and has a funky smell inside, maybe black tank sewer gas. It is plugged in to shore power, refrigerator is on electric, propane tanks are off. I saw that the existing detector was very old and replaced it with a new one. With no heater, refrigerator or stove being used, could the alarm be triggered from the black tank gas?
Seamus McShank

[Unplanned Tourist]

Yes. Methane gas will trigger the alarm.

Happy Glamping.

[MSHappyCampers]

I've heard that can happen. I would take it to the nearest dump station and give it a good cleaning!

[Seon]

The alarm on mine started "beeping" so I replaced it with a new one but it also "beeped" even though the shore power was connected. I traced the problem to the 12v battery voltage that didn't take a charge so bought a new battery that solved the "beeping".
Out of curiosity I tested the one I removed to the new battery and it didn't sound the alarm. Now I have an extra one. LOL

[SKP Kirk]

Methane will quickly trigger a propane alarm and according to the manufacturers it can set off the CO alarm if there is enough of it.

[Jake21]

I had one that was beeping. It was old so I bought a new one. It beeped also. Sent it in to safe-t-alert and they sent a new one. It has been good for a few years

[OldStyle]

I have issues with mine going off if battery voltage is low.