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Old 08-01-2018, 13:07   #1
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Alternator not charging

I have 2 Yanmar's and noticed yesterday the house bank is not being charged when either or both are running. When I start engines the alternators charge for approx 30 seconds and then stop charging. Any ideas why. Thanks Geoff.
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Old 08-01-2018, 13:19   #2
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Re: Alternator not charging

Are you plugged into shorepower? Are the batteries full?
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Old 08-01-2018, 13:21   #3
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Re: Alternator not charging

What type of boat ? A leopard cat ? If so mine has cole heresy solenoids that when you start it first charges the starter batteries then when they are full moves to house batteries
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Old 08-01-2018, 13:37   #4
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Re: Alternator not charging

Not plugged into shorepower.
Have separate alternators for start batteries.
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Old 08-01-2018, 17:21   #5
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Re: Alternator not charging

Next Step Regulator -state indicator and error indicator both light up after about 30 seconds of starting engine and then no charge going into battery bank .Previously about a year ago it wasn't charging and replaced finder 12 v fuse.Fuse still looks good ???
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Old 08-01-2018, 18:28   #6
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Re: Alternator not charging

bad ground but i would start buy checking the connection on terminals first vary Doubtful both alternators would quit at the same time Should be a small problem just may be hard to find
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Old 11-01-2018, 11:48   #7
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Re: Alternator not charging

Plugged into 240 volt and battery charger works and charges battery bank.Still can't find why regulater cuts out after 30 seconds upon starting engines.
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