question

iain-gwynn avatar image
iain-gwynn asked

Overcharging error when within limits

Hi


I have a 100/20 mppt and the PV input voltage is 85v trying to charge a 48v setup however the green and yellow led flash indicating that the PV voltage is too high. It isn't a Bluetooth mppt so I can diagnose any further. Is the mppt dead or something else wrong?


Cheers

MPPT Controllersbattery chargingAGM Battery
2 |3000
Toggle Comment visibility. Current Visibility: Viewable by all users

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

2 Answers
Alexandra avatar image
Alexandra answered ·

@Iain Gwynn

You have two courses of action here.

Get a ve direct to bt dongle or a ve direct to usb dongle and connect to it.

Check it with a meter Or take it in for an RMA

2 |3000
Toggle Comment visibility. Current Visibility: Viewable by all users

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

Paul B avatar image
Paul B answered ·

Look at the OCV rating on your panels IF I Series then multiply this by the number of panels. If that is higher or close to the mppt units limit. Then that's your issue. This is diferant to the working pv voltage

1 comment
2 |3000
Toggle Comment visibility. Current Visibility: Viewable by all users

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

Alexandra avatar image Alexandra ♦ commented ·
This definitely VOC (no load) at cold temps is higher than other times. When the mppt tracks it unloads the solar panels, it could be overshooting.

Maybe open your PV breaker and measure it there

0 Likes 0 ·

Related Resources

VictronConnect VE.Bus charging manual  

Additional resources still need to be added for this topic

MPPT Product Page

MPPT Error codes

MPPT 150/60 up to 250/70 Manual