Dashboard Alternator light
Hi all, The MPPT controller on my coach will deliver 14.6 volts in bulk mode which is fine. In fact it’s exactly what the specs on my GC2 house batteries call for. But when I turn on the engine and...
Forum Discussion
RLS7201 wrote:
Well now that every one is through guessing, here is what's happening with your alternator light.
The alt light gets a + voltage from the dash when the key is turned on. The light sees a - voltage on the other lead from the alternator when the engine is NOT running and the alternator is NOT producing. When the engine is running and the alternator is producing, the light on the dash sees a positive voltage on both leads and the light is off.
Now when you solar panels gets the line voltage above 14.6, the alternator regulator shuts the alternator down and the dash light sees a - voltage on the lead to the alternator and turns on.
Nothing wrong with you MH charging system.. The light is doing what it should.
Richard
You seem to think people are guessing. Well, I am NOT guessing. My info is FACT. This is direct from Roadmaster engineers over 20 years ago. The Idiot light will work with both the Alternator zero output and OVERVOLTAGE. But, in this case, it is faulting to show OVERVOLTAGE, NOT, that the Alternator has shut down. Doug
