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 for the background info, it helps. You have a puzzle there!
In my C the solar just charges the house batts. I do get alternator charging also to the house batts whenever I turn on the ignition, via an isolator. I do not have a boost switch to use the house batts to start the engine, but (I am not sure) they might do that anyway since the ignition would be on then, but with a dead engine batt, maybe the run circuit would not be live to close the isolator. Hmmmm, have to look at that.
Anyway, you also have that monitor that links both battery sets so it could be a suspect. I just have a Trimetric monitor on the house batts.
I have a friend with a 2007 C that has one of those boxes by the house battery that contains the isolator and some other fuses etc, not sure how it all works. My isolator is up by the engine battery.
I just can't figure how the solar can make your red dash light come on, and then how you can test for any alternator charging when both batts are getting charged, maybe only from solar. Weird.
I do think something is wired wrong, but can't think what it could be. That dash boost switch might be part of this if it is stuck closed. You would always get house batt voltage to the engine batt that way, but no red light.
Can you try it with solar but without the Victron? Or at least with the Victron's connection to the engine batt disconnected?
In my C the solar just charges the house batts. I do get alternator charging also to the house batts whenever I turn on the ignition, via an isolator. I do not have a boost switch to use the house batts to start the engine, but (I am not sure) they might do that anyway since the ignition would be on then, but with a dead engine batt, maybe the run circuit would not be live to close the isolator. Hmmmm, have to look at that.
Anyway, you also have that monitor that links both battery sets so it could be a suspect. I just have a Trimetric monitor on the house batts.
I have a friend with a 2007 C that has one of those boxes by the house battery that contains the isolator and some other fuses etc, not sure how it all works. My isolator is up by the engine battery.
I just can't figure how the solar can make your red dash light come on, and then how you can test for any alternator charging when both batts are getting charged, maybe only from solar. Weird.
I do think something is wired wrong, but can't think what it could be. That dash boost switch might be part of this if it is stuck closed. You would always get house batt voltage to the engine batt that way, but no red light.
Can you try it with solar but without the Victron? Or at least with the Victron's connection to the engine batt disconnected?
