Only 3V DC on wires connecting CO2 alarm

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chuckster
Posts: 286
Joined: Thu Aug 27, 2020 4:53 pm

Only 3V DC on wires connecting CO2 alarm

Post by chuckster »

I noticed the red light out on my built-in CO2 detector in the kitchen and thought it finally gave up the ghost. I pulled it out and I measured the voltage on the wires and I am only getting 3V whether or not I am plugged into shore power. The rest of 12V items are working including ceiling lights. Is this connected back to house batteries or motor battery banks? Thoughts?

Regards.
Chuck & Mitzi
'01 Safari Zanzibar 3646 (side entry)
Cat 3126B / Allison MD3060
Magnum M-Series "Blue Max" chassis
2016 Jeep Grand Cherokee Overland toad
CactusTwo
Posts: 70
Joined: Mon Oct 28, 2019 12:06 pm

Re: Only 3V DC on wires connecting CO2 alarm

Post by CactusTwo »

You have lost the ground from the last light, closest light to the CO detector. CO detectors are put on the end of a run usually the lights. Pull down the closest light, CHECK the twisted mar connectors. test wires for continuity from the CO detector back to the light. Been there, done that!
Len and Brenda Nugent
Alberta, Canada, fulltimers since 2012
1996 Safari Serengeti 3740 front door, bought in Feb 2019
Cat 3126 300hp, Allison MD3060, VelvetRide suspension
sold 2008 GMC Duramax 3500 and 37' Cedar Creek 5th wheel
chuckster
Posts: 286
Joined: Thu Aug 27, 2020 4:53 pm

Re: Only 3V DC on wires connecting CO2 alarm

Post by chuckster »

Will do this weekend! Thanks.
Chuck & Mitzi
'01 Safari Zanzibar 3646 (side entry)
Cat 3126B / Allison MD3060
Magnum M-Series "Blue Max" chassis
2016 Jeep Grand Cherokee Overland toad
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