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I went out to run the water in Elsie to get more in the grey tank so I could dump the black. I had the pump running for awhile, then turned it off and started backing out of the driveway to get in position by the sewer connection. As I got to the end of the drive the screech from the carbon monoxide detector started going off so I hit the silent button. I opened the doors and the got out & after a bit,it went off again. I hit the silent button again and turned the batteries off, waited a bit and backed into position. I noticed the engine exhaust smelled really strong so I wonder if the wind blew the exhaust in or did it have to do with running the pump. I think they run on the house batteries. My propane is turned off. I was so glad to see that silent button that thing is LOUD!

Sorry I am not much help... have you changed the batteries in it?... that is what I would do first... but there could be a leak needs to be checked out... that is a silent killer...

Carbon monoxide detector is hard wired to the RV's battery. They do go bad I think, they have a 8-10 year life span. Engine exhaust can set it off. Mine has an alarm light and a error light on it. The problem is they are hard to read down there by the floor. I take a picture of things with my cell pone so I can see the better and enlarge the small print to what I can read. I had fumes from a campfire blow in and set mine off once. Set off the smoke detectors also.

The carbon monoxide detector in my travel trailer is battery operated only, not hard wired. It started beeping continuously and would not stop even with multiple battery changes. The RV repair shop ordered a new one and said they do need to be replaced periodically. Cannot remember the price, but I put in the same type as the previous one it had lasted over five years. The repair man did advise changing the batteries twice a year at the same time as the daylight savings time change. He said the batteries wear out quicker in our trailer because it is often in hot weather without the AC.


Also, had to replace the propane hoses at the top of the propane tanks because they developed slow leaks. This happened because the sun eventually dried and cracked the hoses. It was an inexpensive fix and cost less than a tank of propane. Both are important safety maintenance issues.