Blue LED Isn't Blinking at Night

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greta asked Jan 6, '19

Blue LED Isn't Blinking at Night

I have had my battery on float charge for the past few weeks with no loads. During the night time, the blue LED would blink every 3 seconds to indicate that the system was powered.

I recently disconnected the charge controller to move the battery. Once I reconnected the charge controller, during day, float charge LED was on. But during night time, there was no blinking blue LED. It has remained like this for the last 5 days.

What would cause the blue LED light to stop blinking at night?

I am using 75/15 MPPT SmartSolar.

12V Battery OCV is always somewhere above 12.70.

MPPT Controllers

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Modifications Space

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Answer 1 · 2019-01-06T06:57:18Z

Guy Stewart (Victron Community Manager) answered · Jan 06, 2019 at 06:57 AM

Check the battery is correctly connected by turning off the solar and measuring battery voltage and polarity at the charge controllers terminals. Also check the integrity of the fuse in the MPPT.

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greta commented · Jan 08, 2019 at 07:33 AM

Thanks for the answer!

It appears the fuse had blown, not sure when or why it did, but a replacement fixed the problem.

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