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Question Enphase IQ8A and Gridboss AC coupling

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Posts: 10
Topic starter
(@colmckinney)
Active Member
Joined: 2 weeks ago

Very happy with new gridboss, flexboss setup. I have DC coupled panels charging the battery and providing house power.

I have 14 legacy enphase IQ8A inverters, 2 strings into the combiner 3/envoy box. From there a 240v line to the 40 AMP breaker on smart port 4 of the gridboss. I set gridboss up per the image, ac coupled enabled for port 4. I get no power at the combiner.

If I set the smart port to smart load I do get power but that is not correct. The AC coupled should work even if we lose power, but should be running in any case while we do have grid power.

Any ideas what I am missing or where to check?

image

 

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Posts: 10
Topic starter
(@colmckinney)
Active Member
Joined: 2 weeks ago

Solved. 20 IQ8A inverters and a couple of combiner boxes for cheap on eBay in a couple of days. Couple hours of work and a little 10 AWG and I'm rerouting the array to the Flexboss MPPTs.

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