Not getting voltage at pv terminals

[42OhmsPA]

Why would the Victron SCC show 13.5V battery if BMSs were shut down? Bleed out from SCC?

My thoughts are it's trying to charge the batteries but the power has nowhere to go and that's why it's in float. Where I'm confused is the 0.96v at the battery terminals, could be a fuse / breaker tripped. Pictures are worth thousands of words...

Curious if Victron shows 13.5V when the sun's down.

That's an excellent thought....

 

[G.burd]

My thoughts are it's trying to charge the batteries but the power has nowhere to go and that's why it's in float. Where I'm confused is the 0.96v at the battery terminals, could be a fuse / breaker tripped. Pictures are worth thousands of words...

That's an excellent thought....

What scc.

 

[42OhmsPA]

What scc.

What?

 

[G.burd]

What?

What does scc stand for

 

[zanydroid]

Solar Charge Controller

 

[42OhmsPA]

Enjoy. I wish I found this great thread from @svetz when I started. https://diysolarforum.com/threads/commonly-used-forum-acronyms-abbreviations.882/

 

[G.burd]

Solar Charge Controller

 

[G.burd]

These are readings this sunny morning.

 

[G.burd]

Settings

 

[42OhmsPA]

Have you tried isolating to one battery to see if you still have issues?
Did you meter before and after the MRBF fuse to make sure it isn't blown?

I'm not familiar with Victron, I'm sure someone else will chime in on those settings.

 

[G.burd]

Same readings at all points
Did not isolate to single battery

 

[Adam De Lay]

Based on the settings, you're using the rotary switch position #7 to control your charge parameters. Based on the manual, that means that your bulk charge will be 14.2v and your float voltage will be 13.5v.

https://www.victronenergy.com/upload/documents/Manual_SmartSolar_MPPT_100-30__100-50/29694-MPPT_solar_charger_manual-pdf-en.pdf

That means that your battery will charge up to 14.2v and once that is reached it will stop charging and switch to the float voltage of 13.5v which it will maintain until the battery voltage drops below 13.5v and then it will resume the bulk charging cycle all over again.

I don't believe that the Victron app will show a battery voltage unless a battery is actually connected, so at least 1 of the two of your batteries seems like it's working as it should.

Can you show us where you're voltmeter is connected to when you're reading 0.98v? We can see the readings, but not testing points.

 

[G.burd]

The meter leads are on the battery lugs

 

[Adam De Lay]

The meter leads are on the battery lugs

Are they only one 1 battery or are you going from the positive of one battery to the negative of the other?

 

[G.burd]

Same battery

 

[Adam De Lay]

Like some of the others have said, I think you will want to disconnect the batteries and try and get voltages on each individual battery with nothing else connected. That way you can verify you're getting proper voltage from each battery.