The system is set up by a certified electrician with all of the safety precautions in mind. I thought I did turn the ac in breaker off. I can try that
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January 29, 2025 9:23 pm
January 30, 2025 12:41 pm
You need the electrician to make a change to your wiring. Joel is correct.
It should never be possible to have a feedback loop as Joel has noticed. And it should not be necessary to depend on human memory to put all the switches in the right position to make sure things work correctly.
The change your electrician needs to make is to relocate one of the breakers in your main panel. The two circled breakers in these photos need to be placed side by side in your panel, and the electrician needs to add an interlock to make it possible for only one of these breakers to be ON at a time.
That's the simplest fix you can make here. If you actually follow the EG4 wiring guidelines and diagrams, this feedback loop would not have been possible.
January 30, 2025 4:30 am
I've scanned back through this thread... I don't see any mention of trying to change to voltage control for charging. Have you tried changing the setting "AC Charge Based On" to Battery Voltage instead of SOC?
January 30, 2025 1:36 pm
@mylej
So, we have figured out the flickering lights and got that straightened out.
The AC still does not charge the batteries.
As jlankford mentioned you might try setting the "AC Charge Based On" to Battery Voltage instead of SOC.
Eric, A question about the system - I have read in other forums about situations where the batteries won't charge from PV if the EPS switch isn't on.
Is there anything like that with the solar disconnect? Even though he doesn't have solar does the solar need to be on to complete a charge path for some reason?
It appears the batteries are up to date on firmware (showing v2.18 on remote monitor).
Eric, I know in the past sometime a support person would jump on a system and look over settings to confirm them. If mylej could DM you his serial number is that something you could do?
JB
January 30, 2025 1:49 pm
So, we have figured out the flickering lights and got that straightened out.
How is it straightened out? Did he already make a wiring change not noted here? He needs at minimum an interlock added as I described above. Preventing the feedback loop should not depend on human operation/memory to do things right...
January 30, 2025 1:54 pm
@jlankford I agree that an interlock should be installed but for now it is manual switch of the breaker.
January 30, 2025 2:22 pm
Thank you for the continued feedback! It is very helpful. I did sent a note to my electrician about adding the safeguard to the breaker. It is tough to remember to switch that off every time..
Eric,
My serial numbers are
EG4 6000xp - 4373741832
(2) EG4 LL 100 batteries - SC2024083014, SC2024083022
I believe I did try the voltage vs state of charge with the same results.
Myles
January 30, 2025 7:08 pm
Okay! Problem solved! The solution is a simple one. In order for the AC to charge the EPS switch needs to be in the ON position with the load breaker off. That is it. Again, I appreciate all of the input! And thank you Rodolfo from Signature Solar.
Note that is not in the manual.
January 30, 2025 7:06 pm
Okay! Problem solved! The solution is a simple one. In order for the AC to charge the EPS switch needs to be in the ON position with the load breaker off. That is it. Again, I appreciate all of the input! And thank you Rodolfo from Signature Solar.
January 30, 2025 7:47 pm
Great news and now I feel stupid. I was going to ask about that, but I figured since you had been powering loads you had the EPS on.
Would you mind sharing a pic of it charging the battery in all of its glory?
🙂
JB
January 30, 2025 8:27 pm
January 30, 2025 8:44 pm
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