Checking CO2 detector.

Happy Phantom

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Jul 5, 2014
23
4
Funster No
32,258
MH
Geist Phantom
Exp
since 1988
There is a co2 alarm on our new(secondhand) camper how do we check its working?
 
Feb 16, 2013
11,691
14,538
uttoxeter
Funster No
24,713
MH
ambulance conversion
Exp
50 years
I bought one off eBay , but didn't know if it worked or not as the flashing lights were flashing green but the digital display never said anything but 0 so got it down and held it behind the exhaust on Julie's petrol car and it went off and straight up to 999 so presume it is working, don't know what it is supposed to read though as the instructions were very vague, anyway couldn't stop it flashing red then so took batteries out and it went back to flashing green.
 
Apr 9, 2013
651
337
Ayr
Funster No
25,458
MH
A class
Exp
Newbie
I bought one off eBay , but didn't know if it worked or not as the flashing lights were flashing green but the digital display never said anything but 0 so got it down and held it behind the exhaust on Julie's petrol car and it went off and straight up to 999 so presume it is working, don't know what it is supposed to read though as the instructions were very vague, anyway couldn't stop it flashing red then so took batteries out and it went back to flashing green.
Not a good idea I believe. You may have "overdosed" your alarm.

Tim
 
Apr 9, 2013
651
337
Ayr
Funster No
25,458
MH
A class
Exp
Newbie
There is a co2 alarm on our new(secondhand) camper how do we check its working?
Carbon monoxide (CO, not CO2) alarms usually have a blinking green LED to indicate that they're functioning. The blink rate is pretty slow (to preserve the battery presumably) so you may have to watch for a while. The test button with check the state of the batteries by squealing at you.

Have a look at this. http://www.doityourself.com/stry/how-to-test-a-carbon-monoxide-detector#b

Given how cheap they are these days, consider buying a new one for peace of mind.
 
Feb 9, 2008
5,314
6,598
Corby, Northants
Funster No
1,455
MH
Coach Built
Exp
Since 2007
With mine, I remove and replace the batteries. I then get one beep to tell me it is working OK if I get a number of beeps it is time for replacing.
 
Feb 16, 2013
11,691
14,538
uttoxeter
Funster No
24,713
MH
ambulance conversion
Exp
50 years
With mine, I remove and replace the batteries. I then get one beep to tell me it is working OK if I get a number of beeps it is time for replacing.
Yeah that's what mine did, can't see as it's b........d by just letting it sniff what it's supposed to do, but can't see why it never gets above 0 there must be a change sometime surely
 
Apr 9, 2013
651
337
Ayr
Funster No
25,458
MH
A class
Exp
Newbie
Yeah that's what mine did, can't see as it's b........d by just letting it sniff what it's supposed to do, but can't see why it never gets above 0 there must be a change sometime surely
It may not be b*ggered but the common type use fuel cell technology and the reagents in the fuel cell gradually get used up. The more CO they're exposed to, the more quickly the fuel cell chemicals get exhausted (no pun intended).

Newer cells have a much longer lifespan that the first generation fuel cell type so it may be that the "damage" caused by high CO exposure is proportionally less.

If your gas appliances are working properly you shouldn't really expect to see any reading above zero.

If you read page 18 in this document (Kidde CO alarm instructions) they mention that the sensor may be damaged by a number of things, including car exhaust.
Tim
 
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