no power at MPPT load terminal

frede

New Member
Joined
Oct 5, 2021
Messages
2
About a month ago, thinking I'm not going to be using this van for a while, I turned off the main power switch on the positive battery cable and disconnected the pv cable from my Renogy Rover MPPT. (this may not have been a great idea) After installing some strip lights today, I turned on the main battery switch and reconnected the PV feed to the MPPT. The Rover display fired up like normal, but there is no power at the fuse box, and no power coming from the Rover MPPT load terminal.
The display shows the batteries at 100% and 14.3V, 0.2A from the panels to the batteries, 20V from the panels, no error message, and zero amps from the batteries to the load. All the main fuses and connections are good. I disconnected the battery, load and pv feed cables from the Rover MPPT then reconnected per the manual instructions thinking it just needs a reboot. Still no power from the load terminal. I installed this system myself over the summer and all was working great a few weeks ago before I made the disconnections noted above. What have I done?
Great forum by the way.

My system:
2 100W panels
Renogy 40A MPPT charge controller
2 100A Lifepo4 batteries
Renogy 60A inverter
Renogy 60A B2B charger
 

mopat

Solar Addict
Joined
Jun 22, 2020
Messages
506
no power coming from the Rover MPPT load terminal.
Did not think the Rover Elite 40A charge controller had load terminals.

Tell us how the INVERTER is hooked up, what unit is it? RVR60?

Does the display say OFF 0A as the load state (lower right)?
1633472222630.png
 

frede

New Member
Joined
Oct 5, 2021
Messages
2
Viola! Yup, the load was turned off. I did not know that it could be turned off, or why anyone would want to.
Thank you mopat for the tip. Now that I know what to look for, I see the same solution in the manual right in front of my nose:
"In Manual Mode, the user can turn the load On/Off by pressing the Enter button at any time."
My charge controller does not show that is the "Elite" model, just the 40A Rover series.

This leads to another question: If I am not going to be using the solar system for a long while, is it a good idea to isolate my lifepo4 batteries by turning off the main switch? Should the feed from the solar panels be shut off as well?
 

chrisski

Photon Sorcerer
Joined
Aug 14, 2020
Messages
2,345
This leads to another question: If I am not going to be using the solar system for a long while, is it a good idea to isolate my lifepo4 batteries by turning off the main switch? Should the feed from the solar panels be shut off as w
THe battery spec sheet should show tell you. My Eve 280s do:
8501DF0F-0142-43CB-8477-48C530442B60.jpegB4F6F2B9-F1CA-4767-AE3A-A0D76E043EAB.jpeg
 
Top