Basic MPPT Diagnostics/troubleshooting
Thanks all,
I am looking for good FAQ or other resources on how Airstream places their MPPT into the overall solar -> battery -> charger setup.
I had a third panel (stock factory) added to my rig last week, as well as an AGM -> Battleborn update. During the install, I queried why the MPPT controller in the kitchenette area was offline and at the time was told it was from the service technician performing work. The Tech comments on the work order are "CC/CH Added jumper line on converter. Turned solar charger to lithium settings."
Yesterday, back at site, it's still offline and I believe I see a non-float/non-charge level on the upper battery monitor. I believe the MPPT to be out of the loop at this point, with no charge coming off the panels to the batteries.
I have a call to the service location; which naturally will be followed-up on Monday; but I'd rather spare myself driving eight hours return if the issue can be diagnosed and corrected on my own in thirty minutes. To do that however, I need a base education in where/how the MPPT could cease function as well as how it needs to be in place for full system operation.
As an avid boondocker, I also see the benefit of coming up to speed on the electric system as quickly as possible; to help with future in-field updates or corrections.
In addition, if anyone knows what impedance or voltage readings (as appropriate) I should be seeing at the near/far side of the connections of the device, it would also be appreciated to help with diagnostics.
Thanks for your time,
Ian Poulin
WBCCI 8118
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2024 Airstream Globetrotter 30RB
2022 Ford F350 Lariat Diesel
WBCCI 4CU 8118
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