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Troubleshooting Your solar System

To troubleshoot a low producing array, I suggest the following:
1. Disconnect the array from the controller and put a meter on the wires to measure both the V and A.
2. If low in full sun, move to the connection at the T-branch and check the V and A there.
3. If low in full sun, Move to the solar panel pigtails and measure the V and A there.

4. If a panel is low in full sun without shading, the panel may need to be replaced.
5. If the measurements show full performance of the solar array, the problem is likely with the wiring from the controller to the battery bank.
6. Check the fuse between the battery bank and the controller.  Check all wire connections for good connections.
7. If the meter indicates the panels are performing properly and the controller wires are secure, the issue could be that one controller is dominating the other controller.  The low power controller could be sensing the battery V plus the solar V from the other array and prematurely going into float mode or just backing off power.  If this is the case, I believe Victron has a communication cable that joins the controllers so they can communicate and balance appropriately.




Contact us:
Custom Marine Products
Tom Trimmer
248 705 8337
[email protected]
Efficiently and Sustainably Powering Your Boat. Call us any time, we're happy to help you work through designing your boat's solar system.
Call 248 705-8337 or email [email protected]

Link To Our Article On How To Size Your Solar Panels For Your Boat
Customer Reviews   ​Return Policy
  • Home
  • Marine Solar Panels
    • Semi-Flexible Marine Solar Panels
    • Semi-Rigid Walk On Marine Solar Panels
    • Rigid Marine Solar Panels
    • Portable Solar Panels
  • Marine Solar
    • Kits - Solar System Kits >
      • Flexible Solar Panel Kits
      • Semi-rigid Solar Panel Kits
      • Rigid Solar Panel Kits
      • Auxiliary Solar Panel Kit
      • Portable Solar Panels
    • Solar Controllers & Electrical >
      • MPPT DuoRacer Dual Output Series
      • MPPT Tracer Series
      • MPPT Victron Smart Solar Series
      • MPPT Xtra-N Series
      • PWM Duo Dual Output Controller
      • Electrical Components
    • Mounting Systems >
      • Flexible Panel Mounting Systems
      • Semi-rigid Panel Mounting System
      • Rigid Panel Mounting System - Top Of Pole
    • Inverters
    • Outboard Motor Lifting Crane
    • Solar Water Heating System For Boats
    • Visit Our Store
  • Lithium Batteries
  • Reviews & Installations
    • Reviews/Customer Comments
    • Gallery of Installations
  • Support
    • FAQ
    • Solar System Design & Installation
    • Manuals & Information
    • Solar System Installation Pointers
    • Troubleshooting
    • Contact Us
    • Solar System Installers
    • Battery Exchange Plus
    • Handy Products We Don't Carry
    • Freight Forwarders for International Shipping
    • About us
    • Call (248) 705-8337
    • Return Policy
    • Marine Solar Panel Sizing Calculator Tool
  • Blog