Hi Forum

This morning I put the batteries on charge because they were low and I had to work and there was no sun.

I have Axpert 5 Kva 3 KW pv and the 2x Pylontech US 300 Batteries 

At around 10am the whole system crashed.

I have had this happen before with the charger on and the sun comes out and once the batteries are full it all crashes.

I was only using about 750w and the sun had come out. The system crashed and once I did a full shutdown and restart I saw that the batteries were full.

I suspect the change over on the Axpert from grid to solar in full sun is the cause. If I charge at night I haven't had a problem.

Has anyone else had this problem or have any ideas as to why it happens? 

Thanks 

Rob 

 

I am thinking that your combined PV and Utillity charge is set too high...

Check your "Max charging current with Utiity" and "Max charging current to battery"

Thanks for the reply GVC. 

It only happens when the batteries are full and at the automatic change over from grid

how do you charge the batteries?

From the grid, if no sun, through ICC software. 

What is your battery bank size?

Do you have any monitoring?

What are your inverter settings?

9 hours ago, RobG said:

At around 10am the whole system crashed.

What exactly do you mean by "the whole system crashed"?

Do you perhaps mean that it entered a fault state, flashing a fault code? Usually the buzzer comes on for this, and the red fault LED comes on. It would be very helpful to know the fault code, if this is the case.

Hi 

I have an Axpert 3kva ,which has the error code 6 .This occurred when load shedding started . The unit chargers the batteries and when Eskom comes back on line it switches to Eskom however when there is no Eskom ,it beeps continuesly.

Hi Coulomb

The system cut all output power and the inverter was buzzing.

Unfortunately I didn't check the error code.

I can't find anything on the ICC software about the problem either.

 

2 hours ago, Mohomed said:

I have an Axpert 3kva ,which has the error code 6 .

So that's output voltage too high. Doesn't sound good, or easy to fix, sorry.

1 hour ago, RobG said:

Unfortunately I didn't check the error code.

It would be really helpful to know.

1 hour ago, RobG said:

I can't find anything on the ICC software about the problem either.

You may have to turn on fault recording. For some reason, it's off by default.