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CO detectors sounding alarm
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- CYO Supporter
- Posts: 5810
- Joined: July 10th, 2015, 9:58 pm
- Vessel Info: 1989 Carver 3807 Aft Cabin
- Location: Ontario, Canada
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Re: CO detectors sounding alarm
- 405driver
- Deck Hand
- Posts: 91
- Joined: October 23rd, 2016, 9:52 pm
- Vessel Info: 1998 Carver 405 gas
- Location: Gallatin TN USA
- Has thanked: 37 times
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Re: CO detectors sounding alarm
Tomorrow all three batteries come out and will be checked out. A few days ago I was replacing a few hoses and a vented loop in the engine compartment (yuch) and I kept my eye on the charger (Charles 50A). It never got below about 10 amps (DC system off). I checked a battery with a volt meter and it read 15 volts plus a little. Looks like the charger isn't shifting to the maintenance voltage. I would guess that could be caused by a bad charger or a bad battery. However, I disconnected all of the battery wiring and checked each battery and they all checked slightly more that 12 volts with no load, and it had just come off the charger.
So here's my theory. It's bad battery and the charger can't get it to the maintenance level so it's charging the batteries on high voltage continually. This would cause the batteries to out gas eventually reaching a concentration of H that sets off the CO detectors. Ok...it could be the charger but I called Charles and talked with a tech about it and he said if it's charging, it's not very likely that the circuit is bad. It's like it either does or it doesn't.
One other thing to support the battery theory. The front and rear cabins are at the forward and aft end of the bilge channel (obviously). The batteries are in the lowest point in the center bilge just behind the engines. My theory is that the H is filling the engine compartment then traveling through the bilge channel to the forward and aft compartments where the CO detectors are.
I think I'm over thinking all of this......just check the $%#@ batteries and go from there.
- 405driver
- Deck Hand
- Posts: 91
- Joined: October 23rd, 2016, 9:52 pm
- Vessel Info: 1998 Carver 405 gas
- Location: Gallatin TN USA
- Has thanked: 37 times
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Re: CO detectors sounding alarm
More when they are checked.
- bud37
- Admiral
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Re: CO detectors sounding alarm
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- CYO Supporter
- Posts: 5810
- Joined: July 10th, 2015, 9:58 pm
- Vessel Info: 1989 Carver 3807 Aft Cabin
- Location: Ontario, Canada
- Has thanked: 432 times
- Been thanked: 1588 times
Re: CO detectors sounding alarm
This brings up the topic again of the need to ensure you don't leave a battery selector switch (if applicable) on "ALL" or "BOTH"
- 405driver
- Deck Hand
- Posts: 91
- Joined: October 23rd, 2016, 9:52 pm
- Vessel Info: 1998 Carver 405 gas
- Location: Gallatin TN USA
- Has thanked: 37 times
- Been thanked: 6 times
Re: CO detectors sounding alarm
Thanks for your reply, I appreciate all of the suggestions folks on this forum have shared.
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- CYO Supporter
- Posts: 5810
- Joined: July 10th, 2015, 9:58 pm
- Vessel Info: 1989 Carver 3807 Aft Cabin
- Location: Ontario, Canada
- Has thanked: 432 times
- Been thanked: 1588 times
Re: CO detectors sounding alarm
- mjk1040
- Admiral
- Posts: 1507
- Joined: July 30th, 2015, 8:15 am
- Vessel Info: 1998 355 AC/MY "Deja Vu"
- Location: Savannah, NY
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Re: CO detectors sounding alarm
I'd Rather Be Boating!
1989 Sea Ray Seville
1986 Carver Mariner 32'
1990's Thompson 22' Cuddy Cabin
1990's 4Winns 245 Vista Cruiser
1980's Thompson 19' Open Bow
- 405driver
- Deck Hand
- Posts: 91
- Joined: October 23rd, 2016, 9:52 pm
- Vessel Info: 1998 Carver 405 gas
- Location: Gallatin TN USA
- Has thanked: 37 times
- Been thanked: 6 times
Re: CO detectors sounding alarm
Thanks,
Lynn
- 405driver
- Deck Hand
- Posts: 91
- Joined: October 23rd, 2016, 9:52 pm
- Vessel Info: 1998 Carver 405 gas
- Location: Gallatin TN USA
- Has thanked: 37 times
- Been thanked: 6 times
Re: CO detectors sounding alarm
Interestingly, two of the batteries were wet on top with battery acid in the plastic case when they were removed.
Surely this is the answer to the CO issue. The charger is charging in series, so seems to me that two bad batteries would cause the charger to continuously run in the high mode, boiling the batteries and releasing H2S.
Does anybody turn the DC system off when leaving the boat? That way there would be no draw on the batteries so the charger would stay in maintenance mode?
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