CO2 alarm beeping every 30 seconds or so

D

dreamer*65

Well-known member
Joined
Aug 7, 2016
Messages
101
Fluid Motion Model
C-24 C
I have a 2013 Ranger Tugs R27.

After reconnecting my batteries this spring, my battery bank indicator at the helm indicated that bank 2 was dead-- all my electronics did not work. I switched the parallel dial on, along with the engine, thruster and house battery dials to on and all worked well. But then the CO2 alarm started to beep every thirty seconds or so.. Then I connected to shore power, turned the battery charger on and the Bank 2 battery indicator dial indicated full power for that bank. And all systems worked with shore power on, but the CO2 continued to beep (warning of low battery). Do I simply have to wait for the shore power to charge the battery bank in question? Will the beeping stop? Bad battery connection (that bank originally showed a good bit of corrosion but I cleaned all terminals.)
 
If your CO alarm (not CO2) is original from 2013, the beeping is most likely telling you it has reached its end of life. Time to replace it.
 
I had a similar issue, the Safe-T-Alert detector beeping every 30 seconds with a solid red light. I assumed it was bad even though it was only 3 years old and replaced it. Later I tested the old unit in my garage by hooking it up to my car battery and it worked fine. Checking my solar panel I found that the battery voltage had at some time in the past dropped to 10.9 volts. The problem with the old unit occurred after several weeks of rain and dark skies. I did not have my boat hooked to shore power during that time. and relied on the solar panel to maintain charge. I noticed that another user on Tugnuts had reported a similar issue with low voltage associated with the CO monitor beeping. I presume that by the time I replaced the unit a few sunny days had recharged my batteries and that's why the new monitor had a green light.
 
they give the error code descriptions based on noise and lights on the side of the unit.
 
Another possibility is that the CO2 alarm is responding to out-gassing from the batteries being heavily charged. I had this problem once, on another boat, when the batteries were badly discharged and the charger was strongly charging them. The batteries were emitting hydrogen gas, which the CO2 alarm mistook for CO2. Some of the batteries had to be replaced, but finally all was well, and the CO2 alarm worked fine. Hope this helps.

Slade Cargill, Cutwater24 "Sojourner", Longboat Key, FL
 
Thanks everyone. Turns out the alarm was beeping as "end of life" notification.
 
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