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A Forum run by Enthusiasts of MidNite Solar

Charge Controllers and Clippers => The "Classic" charge controller => Topic started by: ForeverHomestead on August 10, 2020, 05:58:11 PM

Title: 2 of 3 charge controller Resting
Post by: ForeverHomestead on August 10, 2020, 05:58:11 PM
I have 3 classic 150 CC in Follow Me mode.  They have been working great for the last 3 years.  A couple days ago the master and one of the other charge controller show resting.  Even in full sun with batteries not at 100 percent they are resting.  I turned the whole system off and re started and that corrected it breifly, but then the same two went back to resting. 

I also tried taking them all out of Follow mode and that did not help.

Any ideas.  Only running off of 1 controller sure makes it hard to get the batteries charged
Title: Re: 2 of 3 charge controller Resting
Post by: boB on August 10, 2020, 07:04:42 PM
Is the one Classic that is running in Absorb or Bulk MPPT when the other 2 Classics are resting ?

How close to the Absorb voltage is the one that is running ?

Title: Re: 2 of 3 charge controller Resting
Post by: Vic on August 10, 2020, 08:02:36 PM
Hello Forever ..,  Welcome to the Forum.

In addition  to what  boB  mentioned,  will  say,  that   SOC readings are not  necessarily a  perfect  indication  of  the  actual SOC.   And the  accuracy of  that reading can  vary,  due  to Rate  of battery discharge,   charge,   efficiency settings,  etc.

Vic
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