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Old 12-07-2014, 12:27 PM   #11
Junior Member
Join Date: Apr 2014
Posts: 15
Originally Posted by speedjester View Post
Are we talking just he CO2 alarm or the co2/propane combo unit?... The plain Jane Co2 units should not be set off by leaking propane....(CO2 is a product of combustion ).... Try replacing the detector..
I have the SafeTAlert Combination CO and Gas Alarm. It was definitely the CO alarm as the Red CO LED was flashing and not the Gas LED. After I pressed the TEST button, the Red CO LED stayed on until the CO had cleared out I guess. When I tried it the next day, the alarm did not go off.


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Old 12-07-2014, 01:26 PM   #12
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Join Date: Aug 2014
Posts: 258
... I would not rule out there they could be an issue.. (Maybe blockage of nozzle, air in line or blocked flue)With the water heater... But I had a similar problem.. As my CO detector would go off periodically.. I would air out the unit and shut everything off... After about the 10th time..I pulled the unit and brought it into my house.. Sure enough the detector went off... I replaced and reinstalled with no issues..I also installed a plug in digital co detector.. And I have never seen it register anything but 00..

I really don't understand how the combo units work in my coach it's about 3" off the floor... I thought propane was a heavy gas so would tend to settle low.. And Co was lite and would tend to go straight up...

What ever you decide don't be lax and ignore it...

Good luck and stay safe..

2010 Georgetown 300FWSSouth Florida
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Old 12-07-2014, 01:50 PM   #13
2012 Solera
Join Date: May 2012
Posts: 763
After a few alarms, which I rationalized (neighbor running generator, neighbor's campfire, etc) I replaced with separate propane monitor and CO detector. "False" alarm issue solved. I think the 5 year life on these may be overstated - and that false alarms is a sign of detector deterioration. Note: all my "false" alarms were for propane, not for CO.
2012 Solera "S"
Calif SF Bay Area
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Old 12-07-2014, 03:55 PM   #14
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Join Date: Jun 2014
Location: Durham, NC
Posts: 96
CO alarm going off--try cleaning!

Yup! While checking for real reasons is important; once you've done that, take your vacuum and clean the grill plate of your unit.
The CO monitors (had one on a TrailManor that did this occasionally) are sensitive to dust, dirt, animal hair; and a wiser man than me said, vacuum the thing--clean it--before you go buying a new one.
He was right.
Never happened again.
So give that a try; we try to keep ours clean on our rig now.

2014 8528 IKWS
Ford F-250 Diesel
Cassie the therapy dog and Cricket the Cairn
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