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Gridboss randomly trips relays for grid and ac couple smart ports

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Posts: 7
Topic starter
(@cmart1220)
Active Member
Joined: 5 months ago

Hi All,

Hoping someone might be able to help. I have been up and running with the new system since December and have experienced this issue now a handful of times. Essentially everything will be fine for a few days (solar production, battery charge/discharge, etc), maybe even a full week and then the Griboss relays trip and all but the inverter light shuts off. I need to shut the inverter breaker, than cut the 200amp service power to the house for 15-30 seconds, turn power back on, wait for grid light, then switch the inverter breaker back to the on position. Have lost a day or two of solar production because I hadn't realized the system was off. Any help is appreciated!

 

System Details:

200amp service

Gridboss with SP1 and SP2 set to AC Couple for two separate rooftop solar arrays (Start SOC 100 - End SOC 105 and time 00:00 - 23:59)

200amp Main panel wired to backup loads

Flexboss21 with 12 Ecoworthy 51.2V server rack batteries (Lithium + 6 - Luxpower). Discharge set to 10% when on grid 0% off grid

PV input to Flexboss - 4 strings of 11 each 460w bifacials (Ground mount)

 

Gridboss and Flexboss are on the latest firmware versions and they are set up in parallel with grid boss mode enabled. As mentioned earlier, works great for a time and then these random "shutdowns" happen that require a full power shut off to reset. "Shutdowns" have been occurring at night (last 3 at least) without any crazy consumption spikes (something turning on, etc)

 

Thank you!

Craig


7 Replies
Posts: 7
Topic starter
(@cmart1220)
Active Member
Joined: 5 months ago

Has happened again since I posted. Seems to be random high bus voltage faults on the Flexboss21. They are happening at night (so no solar production). Latest one happened at 1:42am. Any help figuring out why this keeps happening is much appreciated. Shutting down the whole house and missing out on solar production is getting frustrating. 


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Posts: 7
Topic starter
(@cmart1220)
Active Member
Joined: 5 months ago

Updated the Flexboss to the latest firmware the other day after another "trip" with no errors logged. Reset the whole system again and we were good for a day or two and then the system "tripped" again with no errors logged. Batteries are sitting at 100% and are not being used and PV is not working despite the sunshine today. Not sure at this point if these intermittent issues are settings related or hardware related but hoping someone can help identify the issue.


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Posts: 7
Topic starter
(@cmart1220)
Active Member
Joined: 5 months ago

Additional context, normal operation we have 5 LEDs lit up on the Gridboss (Grid, Hybrid, AC CP, SP1, SP2) however on these trips only the Hybrid light is lit up. As noted in previous posts, the trips are occurring at night. Most recently around sunset but sometimes in the middle of the night. House loads are light to moderate at worst and battery charge lately has been ~100% which was achieved earlier in the day.


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Posts: 7
Topic starter
(@cmart1220)
Active Member
Joined: 5 months ago

Happened again today. E019 error registered in the event history. Would be great if someone was able to chime in with remediation steps. This is super annoying.


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EG4 Eric
Admin
(@eg4eric)
Joined: 2 years ago

EG4 Online Support
Posts: 1151

@cmart1220 
I apologize I missed this! If you share your inverter or Gridboss serial number with me, I can look at the alarms and data to identify what the issue is.


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(@cmart1220)
Joined: 5 months ago

Active Member
Posts: 7

@eg4eric No worries! I know how busy you are helping everyone around the community and we all appreciate you for it! Hoping it is simply a software/settings issue we can resolve, because when everything is working it really is quite amazing and I can't help but share with anyone and everyone who will listen 😄.


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