LP/Carbon Dioxide monitor

[Jwreyn]

Monitor continues to “sound off” even after resetting. Replaced unit but still sends alarm. LP has been disconnected for two seasons now. Checked charge on battery and it appears to have full charge. Suggestions?

[Reverse_snowbird]

The battery would be my first guess. The alarm going off is usually our first indication that the battery has problems.

If it's not that, then I'd check for other sources of fumes. Some cleaning products will set them off as well as things like sewer gas.

[mlamar]

I was sealing some plumbing with spray foam and set it off too.