r/enphase

I have an Enphase solar setup with an IQ Combiner 3 (X-IQ-AM1-240-3). Recently all 4 LEDs on the gateway started blinking red continuously. I tried power cycling the combiner multiple times, but the issue keeps returning.

The system is out of warranty. I contacted Enphase support and they told me the gateway/Envoy has failed and needs replacement. Their quote was around $1200 including the replacement unit and professional installation.

I’m fairly comfortable working with electronics, PCB swaps, and low-voltage wiring, so I’m wondering whether this is realistically a DIY repair.

A few questions for anyone who has done this before:

• What exact gateway/Envoy model should I be looking for?
• Is the replacement just the internal PCB assembly or the full Envoy unit?
• Can used or refurbished units be paired successfully?
• Where is the best place to source one?
• Any installation gotchas or activation/pairing issues with Enphase?
• Has anyone successfully replaced the Envoy board inside the IQ Combiner 3 themselves?

Trying to figure out whether this is a reasonable DIY project before spending $1200. Any advice or part numbers would be appreciated.

Hi! So I purchased a home a few years ago with an Enphase solar panel set up. For the first 2 years, no problems. This spring however, it’s been a messing warnings, micro inverters not reporting, and what not.
I think it may be squirrels, which I am actively working on removing, but my primary question right now is regarding the solar pv meter. If the, dial? I guess, is moving, does that mean the panels are generating electricity even if the app is telling me not reporting or whatever? Any and all help/advice appreciated.

If you have to be on NEM3 (as we unfortunately do) then this is probably as good as it gets!

Effectively no imports or exports. 500-600Wh each way is the system syncing with the grid occasionally and balancing when some larger loads turn on/off. For those not familiar with NEM3 this is ideal as exports are paid at less than 1/10th imports

Ran our home (well pump, water pressure pumps, pool pump, cooking etc) + charged both EVs during the day (and one briefly overnight) from PV production and stored PV production from the batteries.

There was some marine layer first thing so early morning production down slightly but with sun rest of the day we were close to our max daily production (just over 60kWh) so far.

9.6kW PV Array (22 Silfab 440 QD panels with 22 x Enphase IQ8AC microinverters) + 30kWh batteries (2 x Franklin aPower 2's) in SF Bay area on NEM3.

First day making over 120kwh. Very happy with the curve.

Hey r/solardiy ,

I had my 31-panel Enphase IQ8+ IQ Combiner installed in 2023 but held off on the battery/backup side at the time. Now I'm going back and adding:

Enphase IQ System Controller 2

Critical Load subpanel

Since this is a retrofit rather than a fresh all at once install, my existing combiner is already set up outside so I'm working around what's already there and trying to figure out the best physical layout before I commit to anything.

Specifically looking for:

Photos of your SC2 + critical load panel placement relative to your service panel, same wall? adjacent wall? how much clearance between them? How you ran conduit between the SC2 line side MSP and SC2 load side critical load panel, especially in a retrofit where you couldn't plan the rough-in from the start. Nice big gutter?

Did you mount the SC2 and critical load panel directly adjacent, or is there separation? The SC2 is a big box (roughly 19"×36"×9") and I want to make sure I'm not painting myself into a corner What loads did you put on the critical load panel and how did you organize the breakers within the 4×40A/2P (or 8×20A/1P) backup capacity limit?

Any retrofit-specific gotchas things that would have been easy in a new install but were a pain going back in?

My service panel is on the interior SE corner of the house, overhead feed, 200A service. The combiner is already mounted nearby. Happy to share my as-built line diagram.

Drop your pics clean installs, ugly installs, doesn't matter. Real-world is what I need!

Sunlight backup is my day one, I'm gonna think about battery later. I used a Growatt inverter with EG4 battery initally with my string but now going to install the System Controller/

I was going to keep combiner, safety shutdown, production PV outside and system controller and critical load center inside so the critical loads runs are shorter, but want insight into what others like.

https://imgur.com/a/9VSawtZ

There is new information I’ve never noticed before on the app, “Charging at 12A : Safe mode”. I can’t find anything in settings, in or around the Green Charging settings to adjust this, and a google search has turned up nothing. Until a couple days ago, the green charging function would charge my car at the full available excess solar after the house battery was charged and above the house loads, minus a few hundred watts buffer to the grid. Anybody know what’s going on here?

Reposted with pictures and diagrams

I am struggling on a commercial solar system and need some help. This is for my building and I want to do a smuch as I can. I am an Enphase installer for both residential and commercial through Enphase University. I have completed only one large residential system with the help of an electrician (his first solar and he is not certified installer). This system is on my house and I have posted about it in the past. Has great help from many here.

Now I am mid construction on my warehouse that has two 9,000 sf roof tops. I want to put about 80 kW on each roof. They would be nearly identical systems. I am considering hiring a local company (have two bids) but also feel I could handle this myself. I am struggling with the "gear" portion, such as main distributon panel, aggregator (combiner) panels, CT cabinets, system controller 3, etc and setup for future addition of at least 30 kWh backup battery. My electrician can install all of this but he can't help with the design (no experience). I paid for a solar design but they also can't tell me exactly what gear (panels) I will need (they are based out of India and do a lot of design for US companies and solar design software).

Some details: 3 phase 208v. The structure service will be 1,200A that will divide in the exterior mounted MDP (main distribution panel) to two 600A services each in an exterior metered CT cabinet. From there I get lost. I am trying to piece this together so I can have the solar design updated with exact gear so I can then submit to my AHJ. I am including sme pictures of the building, the current solar design, and a design flow chart that I used Claude Ai to help with (may be all wrong). I have determined this will need to be a line side connection due to size and to accomodate the EV chargers and battery backup.

Can anyone help me with the details and or recommend exact equipment (gear).
The two 9,000 sf units have a shared firewall and the north unit is 4' lower than the south unit. The solar lines come down off the roof top near ground this shared wall and then I get lost. I can't picture the size of these cabinets and where they would mount (system controller 3, agregator/combiner, etc). Can anyone help me complete this design portion that is all the heavy gear, or recommend a company (solar elec engineer) that can help me wrap this up? I originally had a quote for $14K just to design the system. Greenlancer would have been about half but I didn't feel comfortable with the process they use to hook me up with a designer (one size fits all feel to it). I felt those charges were too much and while it may have been standard for the industry I feel Iike I am too close now to start over from scratch. Again, a big part of the story is that I want to do as much of this as I possibly can. I want to be invloved so I understand it and can do it largely myself in the future.

A couple of high 90 days since the equinox but wanted to crack triple digits before posting.
(44) 420s iq8