[RE-wrenches] Fried Classic150?

[Aaron Mandelkorn]

The more I think about this the stranger it seems. All system breakers were
left on before leaving for the winter. Inverter was also on to power two
small AC fans. How can a 48 volt battery bank get so discharged to the
point of almost complete depletion (13.7 volts). The inverter low battery
cutout was programmed to 48.1v and there are no DC loads.  Isn't the point
of lbco to protect against this exact situation? What could have brought
this bank down so low? I am wondering if my client may have reset the lbco
and other settings by throwing the inverter breaker by accident.

Aaron Mandelkorn
Owner/Solar Specialist
Renewable Energy Outfitters
www.reosolar.com
www.offgriddepot.biz
970-596-3744
719-221-5249
reosolar at gmail.com


On May 30, 2016 8:43 PM, "Dan Fink" <danbob88 at gmail.com> wrote:

> MPPT does need a minimum battery voltage to wake up and start charging, at
> least 9 volts -- I once arrived at a remote site on a sunny day, the PV
> input breaker had tripped, batteries were under 9v, no charging despite the
> sunny weather until I woke the MPPT up with jumper cables from my truck
> battery.
>
> Dan Fink
> Adjunct Professor of Solar Energy Technology, Ecotech Institute
> IREC Certified Instructor™ for:
> ~ PV Installation Professional
> ~ Small Wind Installer
> Executive Director, Buckville Energy
> NABCEP Registered Continuing Education Providers™
> 970.672.4342
>
>
>
> On Mon, May 30, 2016 at 5:59 PM, Aaron Mandelkorn <reosolar at gmail.com>
> wrote:
>
>> Hi all. I returned to a off grid site today after having no winter
>> access. It appears as though the classic 150 charge controller has failed.
>> The batteries are completely discharged. The classics screen will flash
>> occasionally as well as a yellow light on this left front of the controller
>> but wont turn on. Does the classic have a minimum voltage requirement
>> needed to turn on? Has anyone else experienced this?  I can't figure out
>> what happened to cause this issue.
>>
>> Thanks
>>
>> Aaron Mandelkorn
>> Owner/Solar Specialist
>> Renewable Energy Outfitters
>> www.reosolar.com
>> www.offgriddepot.biz
>> 970-596-3744
>> 719-221-5249
>> reosolar at gmail.com
>>
>>
>>
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