MonaLisa

Will have a look at the link. Thank you. Yes, it's an older inverter than my original one which was replaced under expired warranty. Will let you know the outcome!!!

Right-o Here you go U1 is 52 30 Getting there- you are the only one who has actually explained this and I am very appreciative 🙂

Correct, it's the charging LED Setting #31 is the last setting on the Inverter. The manual says U1 Firmware Version (Main CPU version checking is U1 14 04 and Secondary CPU version checking is U2 03 03 I think you're right about the undercharging. Been trying to figure this all out and with your help, it's all making sense.

Today is rain with cloud but at 2pm, the Inverter led light is static (not flashing) and battery volts reading 55 on the Inverter. I'm fairly certain this is what is happening on a daily basis even when there is full sun. The Inverter or Multi Meter never read above 55.2 volts. What do you think?

Yes, you're correct! Mine charge indicator is flashing and it's 5pm here in New Zealand. Merry Christmas by the way 🙂

Thanks for the confirmation. I don't have that charge LED. It's an old school inverter.

Thanks for your reply. Much appreciated. I have the Inverter set to Utility First and yes, I am off grid. I run a generator in winter when needed through a smart battery charger that desulfinates the battery bank. My batteries measure around 13.8v at lunch time and the inverter display reads 55v-55.2v but never reads higher unless I run an appliance. When the appliance turns off, the battery volts climb to 56v-57v but go back to the 55v after 30 seconds. Thoughts?

Thanks for the great info. Still wondering why the batteries aren't getting up to the 58v mark?

Hi all- I need help with the settings on my 48v off grid system. I have a MUST 5kva 48v inverter. I have 6x 405w panels. My battery bank is 4x 12v 270ah AGMs which are 5 years old. My Inverter reads 55v on a sunny day by 10:30am. They never get to the Bulk stage of 58.5v or maybe since I'm a low energy user, they go straight to Float stage? When my water pump goes on, I see the volts go up to 57v but then the volts drop back to 55v when the pump goes off. My Bulk is set to 57.6v and Float is set to 55.2v Not sure if all my other settings are correct? Attaching my inverter settings. Thanks in advance :-)