question

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grahamdower asked

MPPT 75/15 showing voltage but no current or power

My 175w system has been running a year with no problem but, since Sunday, it has been off unexpectedly. Currently it's showing a lower than expected voltage (it's a lovely sunny day here) but no wattage reading and no current value

I have cleaned the panel, checked the connections and the Bluetooth connection and all is fine. Until Sunday the history showed all graphs as I would expect.

I don't think the panel is currently charging my batteries so any help is appreciated

Thanks

screenshot-20230526-150612.png

MPPT Controllerssmart solar charging behaviour
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1 Answer
ingo21 avatar image
ingo21 answered ·

i think the solarpanel voltage has to be 5v more than your battery voltage to start the charging.

can you measure the voltage on your solar panel without the panel connected to the charger?


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Related Resources

MPPT Product Page

MPPT Error codes

MPPT 150/60 up to 250/70 Manual

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