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
Thanks all,
If I turn off the panels, the problem goes away.
The panels/controller work great when the engine is off.
The controller is mounted to a piece of plywood so not grounded and the feeds from the controller go to separate buss bars, positive and negative. The positive buss has a cable that connects to the positive battery bank post and the negative buss has a cable that connects to a shunt and the shunt then connects to the batteries.
When this happened, I just shut off the panels. My schedule hasn’t allowed me to experiment but I have a feeling that if I change the battery profile to something like GEL, the max voltage output will be 14.2. This is not my first solar install and I don’t think it’s messed up. I think it’s either a problem with the isolator or the light is showing me over voltage.
I agree. They should play nicer together. I know I’ll have to run more tests.
If I turn off the panels, the problem goes away.
The panels/controller work great when the engine is off.
The controller is mounted to a piece of plywood so not grounded and the feeds from the controller go to separate buss bars, positive and negative. The positive buss has a cable that connects to the positive battery bank post and the negative buss has a cable that connects to a shunt and the shunt then connects to the batteries.
When this happened, I just shut off the panels. My schedule hasn’t allowed me to experiment but I have a feeling that if I change the battery profile to something like GEL, the max voltage output will be 14.2. This is not my first solar install and I don’t think it’s messed up. I think it’s either a problem with the isolator or the light is showing me over voltage.
I agree. They should play nicer together. I know I’ll have to run more tests.
