EG4 Community Forum - Recent Topics

MPPT Production Change

Johnaand — Mon, 01 Jun 2026 23:25:39 +0000

I have a Flexboss21 Inverter with 28 solar panels connected to MPPT's 1,2 & 3. Up until today I have been getting great solar generation from all three MPPT's. I have attached the Ppv1,2 & 3 charts for yesterday (5/31) and today (6/1) and there is a definite change to MPPT's 1 & 2 that started about 9:38AM today. As you can see MPPT-3 does not appear to be affected. Looking for any help on what is going on.

Thanks,

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12000xp Ham Radio Noise

radioman — Mon, 01 Jun 2026 21:46:30 +0000

Hello,

i was wondering if anyone has any experience with this unit and HF radio noise being generated from the switching transistors, my location is very quiet for HF noise and i don't want to introduce it,

should i stick with a low frequency device? does anyone use this unit with ham radio equipment ?

Thanks

Anthony.

18kPV 1/3000 CTs installed "correctly" grid consumption underreported by 60% compared to utility company meter

wdawson61 — Mon, 01 Jun 2026 20:39:33 +0000

Title says it all. How accurate can I expect the inverter's notion of my grid consumption to be compared to the utility company? Whole house configuration with feeder tap - i.e., no other circuits before the CTs in the incoming feed. I've validated direction and L1 vs L2 etc. Based on nother post, its very obvious when the Ls are reversed!

remote firmware upgrade 6000xp to ccaa-191400 bricked the inverter

Krzysiek_KTA — Sat, 30 May 2026 23:04:37 +0000

I have initiated the remote firmware update to my 6000xp to ccaa-191400 and it went "successful", yet after 30 min or so the inverter stopped working throwing) Internal communication error like the the firmware update failed.

Now I am stuck as I can not re-initiate the firmware update because the system recognizes the latest firmware is loaded.

What a mistake to do it on the Weekend.

Is there any way to re-initiate the firmware update without EG tech support?

Brgds

EG4 FlexBOSS18 Connection

sam126 — Sat, 30 May 2026 16:28:40 +0000

Hi, just bought EG4 FlexBOSS18...below wiring diagram is from their website. Want to know if the 200A breakers shown in the diagram (in red) is actually a same breaker and not 2 separate breakers?

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genertor

annettesenk — Fri, 29 May 2026 02:11:09 +0000

generator starts but shuts off after a few minutes

How to tell why GridBOSS started generator?

eg4c — Wed, 27 May 2026 20:59:44 +0000

The other day my generator suddenly started working at half past midnight. I checked generator logs and it was triggered by GridBOSS 2-wire start feature. There was no outage, and batteries were at ~50% SOC (generator is set to trigger at 30%). Generator worked for ~10 minutes, then stopped.

I have graphs of grid voltage, battery SOC and generator voltage, and I verified those statements are correct.

What might have caused GridBOSS to trigger generator? If you have a theory, tell me how to confirm.

314 Wallmount AutoID Master/Slave mismatch

carlrx7 — Fri, 22 May 2026 13:43:18 +0000

Hello,

I have two 314's in parallel. The batteries "to me" are not displayed correctly on the web device monitoring page. It is showing my slave battery as "battery 0" and the master as "battery 1". Any way to fix this?

Battery 0 - Battery-ID-01 - V 3.21

Battery 1 - Battery-ID-02 - V 3.21

Thanks,

-Carl

AC Couple Enphase IQ7XS ro Gridboss?

Opalfrost98gt — Wed, 20 May 2026 16:04:18 +0000

As title states Im planning to AC couple my Sunpower Equinox system which has Enphase IQ7XS Microinverters. I'm reading that they require a specific Enphase profile to work properly with the Gridboss, Do you know what that specific profile is?

Thanks

Greg