question

jon-bowles avatar image
jon-bowles asked

Low wattage from solar

100/30 victron mppt 1 x 320w qcell solar panel 2 x 150ah lithium batteries 1 x victron battery monitor system has worked perfectly for many months. yesterday i noticed battery voltage dropped and then noticed low wattage input on mppt. today i have no battery voltage. mppt shows very low watts (0-25w fluctuating) mppt shows good voltage (18-33v fluctuating) mpot shows low current (0-2a) i am in direct sunlight in south of france in july. no obstructions to pannel, cleaned panel thoroughly. i am stumped any advice would be appreciated. the only other thing i noticed was that i have not been getting out of bulk mode for the last few days. 12v system 1 x 12v dometic compressor fridge 24/7 1 x max air fan 12/24 hrs 6 x led puck lights 5/24 hrs 1 x 2000/4000w inverter (when needed) 1 x 800w induction hob (30mins daily) some 12v usb's etc

MPPT ControllerssolarHelplow battery warning
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1 Answer
Mike Dorsett avatar image
Mike Dorsett answered ·

Fluctuating PV voltage and low current would tend to suggest a lose connection in the PV circuit.

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MPPT 150/60 up to 250/70 Manual

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