Last night in our motorhome the carbon monoxide detect kept going off. I opened all the windows and vents and kept hitting reset but after a few minutes it would go off again. This went on for about 30-40 minutes. I finally dismounted the detector and held it up to an open window. Just as I was about to start cutting wires to shut it down, the red light went out and it quit beeping. I am trying to figure out what caused this. We are parked on a lake with other RVers. I did have a fire going outside before the alarm went off. I got up and closed the door (just had the screen door closed) at one point because I was starting to smell the camp fire a bit inside. Could this have caused the detector to go off? I have had issues with the propane detector going off in the past when the wife put on perfume but I have never had the issue with the carbon monoxide detector.Burch

They age out. The mfg will say 5 years, but I have lost them in less than a year.

donn0128 wrote:They age out. The mfg will say 5 years, but I have lost them in less than a year.x2

donn0128 wrote:They age out. The mfg will say 5 years, but I have lost them in less than a year.The motorhome is brand new. 2018 Miramar. I would hope they would last longer than that but who knows how long the detector has been sitting on a shelf before it was installed.

As you pointed out these sensors are super sensitive and will alarm with very little provation. I would suggest that it probably was your campfire smoke that caused the alarm. However I just replaced one in my TC that was only 2 years old. I've not only replaced the original but also installed a second battery operated unit as well. Better safe than sorry!

Carbon monoxide detector going off | Good Sam Community

donn0128
Explorer II
Feb 04, 2018
They age out. The mfg will say 5 years, but I have lost them in less than a year.
rr2254545
Explorer
Feb 04, 2018
donn0128 wrote:
They age out. The mfg will say 5 years, but I have lost them in less than a year.

x2
MetalGator
Nomad
Feb 04, 2018
donn0128 wrote:
They age out. The mfg will say 5 years, but I have lost them in less than a year.

The motorhome is brand new. 2018 Miramar. I would hope they would last longer than that but who knows how long the detector has been sitting on a shelf before it was installed.
Fizz
Explorer
Feb 04, 2018
Never hurts to have a backup.
1mtnman
Explorer II
Feb 04, 2018
As you pointed out these sensors are super sensitive and will alarm with very little provation. I would suggest that it probably was your campfire smoke that caused the alarm. However I just replaced one in my TC that was only 2 years old. I've not only replaced the original but also installed a second battery operated unit as well. Better safe than sorry!
lj2654
Explorer
Feb 04, 2018
It should have a date on it. Even though it is a new motorhome I would check it. May be old stock they had sitting around. Mine did that with the beeping but it was old.
enblethen
Nomad
Feb 04, 2018
There could be chemical smell in the rig that is setting it off.
Go ahead and verify date. I would have dealer replace the unit whether date is good or bad. If dealer will not call the detectors manufacturer for replacement under their warranty.
If it is chemical smell, new detector will alarm.
Veebyes
Explorer II
Feb 04, 2018
Had that problem with a smoke detector. Usually a signal that dinner was cooked. 40 years later, she is much better now.
jkwilson
Explorer II
Feb 04, 2018
Hydrogen gas from battery charging can set some detectors off.
memtb
Explorer
Feb 04, 2018
A far reach here.... but, stranger things have happened! Are you running the forced air heater in your Motorhome at that time. It’s possible (though unlikely) that you have a leak in your furnace “fire box”, thereby pushing CO into the unit!