I have a SolarEdge inverter that worked good before I installed my 18k. I hooked it up to the 18k gen port and now I have no power to SE inverter. The ac couple setting is checked on 18k. But SE support said their is no ac power. I’ve been on the phone with eg4 CS for 4 hours total from today and yesterday. They just say ac coupled is checked and they don’t know what else to do. Supposed to get back to me in 10 minutes but that was acouple hours ago so not to sure about getting an answer from them. I wanted to know if anyone had any suggestions or experience with what the problem might be. And if there is somehow a setting that needs changed. Any suggestions would be helpful at this point.
Ac coupled to 18k
- Thread starter Bricktop
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EG4_Jared
Online Support for EG4 Electronics
If you could let me know the model of the SolarEdge inverter, I will look into this.
EG4_Jared
Online Support for EG4 Electronics
I will look into this.
CRenner
New Member
Do you need AC coupled checked if using the gen port?
I checked it with multimeter and had 0
On the inverter the off grid out output is checked but I’m currently using all my power from the grid because I have no solar tied in yet. I wanted to get the current system i had up and running using the SE inverter ac coupled before I tie in the rest of my solar I installed myself that has never been running.
Is your battery below 93%, needs to be lower than that before the ac couple will switch on.
Anything lower than 93% the Ac coupled inverter turns on, At 95% the ac coupled inverter turns off. This is for a no grid situation. (grid down)
If you disable off grid mode, the AC Coupled inverter is not restricted by the batteries charge levels. Like above.
Anything lower than 93% the Ac coupled inverter turns on, At 95% the ac coupled inverter turns off. This is for a no grid situation. (grid down)
If you disable off grid mode, the AC Coupled inverter is not restricted by the batteries charge levels. Like above.
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RCinFLA
Solar Wizard
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- Jun 21, 2020
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Believe the battery SoC for AC coupling also applies if on grid. You never know when grid might drop out and battery/inverter has to be ready to swallow any excess PV power that was being exported to grid.
Yeah good point, that's why I put 95% on the AC Couple End SOC(%) a lot of other use 99%, but I want to leave enough room for a drop out.
OK, you said that you don't have voltage on your gen port, right?
Your images show power flowing from grid to load.
If you are set to AC couple, then the gen port must have voltage, which is clearly does not.
My guess is that you don't have AC Couple enabled.
You have the parameters set, but it is not enabled.
You enable it on the inverter itself, I do not think you can do this via the web or app.
Your images show power flowing from grid to load.
If you are set to AC couple, then the gen port must have voltage, which is clearly does not.
My guess is that you don't have AC Couple enabled.
You have the parameters set, but it is not enabled.
You enable it on the inverter itself, I do not think you can do this via the web or app.
Fair enough. Maybe the relay inside the 18 is bad
Further up the chain, I thought @EG4_Jared offered to help
Might be, is your run without grid off?
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EG4_Jared
Online Support for EG4 Electronics
Could you please DM the serial number for this inverter?
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