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MPPT 100/15(blue) controller had light on when it was just connected, and then there was no reaction (no light on)

MPPT 100/15(blue) controller had light on when it was just connected, and then there was no reaction (no light on)

2021-09-01

①:Check the fuse wire

②:Pull it out and measure it with a multimeter

③:When the system is built, it will also have an impact


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