Posted: Tue Apr 10, 2012 9:02pm

on returning from our first outing this year the red warning /ing light stayed on from minutes to continuous over a 5 hour period.the isuzu 42engine is fitted with 1 lucas 80ah & 110ah alternator.we quickly checked all belts and these were in good condition and at the correct tension.the voltmeter continued to display in its normal charge position and our led battery condition, read 13.2 to 13.5 charge on engine & domestic batteries at end of journey.the bow thruster worked as normal with no loss of power.i am at a loss as to why the red light stays on and any help would be much appreciated, many thanks rob.