Why is my flexmax 80 sleeping

System
System Posts: 2,511 admin
in PV Installers Forum - NEC, Wiring, Installation #1
Hi there,
I have 5 CSI 220-24volt panels and 2 Sharp 220-24volts - all parallel to the combiner.
Just started up the Flexmax 80 and FXinverter. Charge controller shows it's sleeping still - it's bright and sunny here. WTF?
Should I have wired this array differently. Need some advice, there aren't any people around this area to ask for help. On my own.
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  • BB.
    BB. Super Moderators, Administrators Posts: 33,658 admin
    #2
    Re: Why is my flexmax 80 sleeping

    What is the voltage of your battery bank and the exact Vmp of your panels?

    If you have 24 volt battery bank and a "Vmp=~24 volts", the array voltage is too low... The Vmp-array should be >~35 volts for a 24 volt battery bank.

    If you have a 12 volt battery bank, I am not sure what is going on.

    Have you checked the panel input and battery output of your Outback charge controller with known good volt meter?

    Also, a suggestion for an additional tool for later debugging/monitoring is a DC Current Clamp Meter (here is an inexpensive one that is "good enough" for debugging).

    Has this ever worked, or is this your first try?

    -Bill
    Near San Francisco California: 3.5kWatt Grid Tied Solar power system+small backup genset
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