Here's the news; the problem continues.
New unit arrived on Friday from the factory and was installed today. The installer let it run with the fridge, lights and instruments off charging the batteries and everything looked good. However with the refrigerator
on and drawing < 3 amps (showing 10% output on the charger) after about 20 mins or it started flashing high charger temperature warning. I sat beside the charger for the full 20 mins or so and the fan didn't come on once to try to cool the unit. The unit felt warm to touch when it signaled the temperature warning.
I turned the charger off and let the refrigerator
run off batteries for 30 mins and the unit was cooling cycling on and off a few times. (draw 3.5A at start up and settles around 2.8A).
I then turned the fridge off and turned the charger on. The fan immediately came on for 10 mins or so. The charge light on the unit was displayed and the remote
panel indicated 20% charging output. After 10 mins or so the unit settled back into float stage. The fan stopped and unit indicated <5% output.
I'm at a total loss to explain what's wrong. It must be related to the refrigerator circuit somehow. Any one know a boat electric
guru who could figure this out. I'm in Toronto Canada