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mark-r avatar image
mark-r asked

Why does my 215 wat solar panel deliver 26v but the MPPT 100,20 show 13-14 v only.

Recently purchased 215-24 V Mono panel, Smart Solar MPPT 100/20 and a Phoenix 12 375 VE Direct.

Installed it 28 days ago getting 26-29 v from panel for about a week had a change in the weather and lost voltage from panel. Weather has consistently improved over last week but only getting 13-14 volts. Checked open circuit voltage receiving 26v average. I can not obtain the 5 volt difference need between batteries and panel batteries showing 11.7 v

Any suggestions

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2 Answers
klim8skeptic avatar image
klim8skeptic answered ·

You would seem to have a bad connection between the panel and mppt.

Please check.

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mark-r avatar image
mark-r answered ·

Checked all connections several times I have 26v at the connection point of the MPPT but once connected it shows 13v

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