The Complete Guide To Enphase Microinverter Error Codes

Why an Enphase error code is worth sorting now

An Enphase error usually means some of your panels have stopped making power, or have stopped telling you about it. Each micro that sits idle is a panel's worth of power you buy back from the grid at full price. One kind of fault is about safety rather than savings: DC Resistance Low means current is leaking from a panel's wiring to earth.

Enphase is still a supported brand, and its design changes what a fault means. There is one microinverter under each panel, and an Envoy or IQ Gateway collects their data for the app. Many Enphase codes are monitoring and reporting faults: the panels are still producing and only the app has gone quiet, which is often a gateway or router fix. A failed micro is a roof job, and on the older M-series (M190, M215 and M250) several failing at once usually means a conversation about the whole system.

Sorting it early keeps it small: one micro dealt with, or a gateway back online, before months of lost production add up. Left alone, a dead micro is easy to miss in the app, and a ground fault will not clear until its cause is fixed.

Find your code in the table below to see what it means and how urgent it is. If your home is in Adelaide, the Adelaide Hills, Gawler, the Barossa, the Fleurieu, Murray Bridge and Yorke Peninsula in South Australia, or North Brisbane, Caboolture, Bribie Island, the Sunshine Coast, Noosa and Gympie in Queensland, our own licensed electricians will go through it with you over the phone for free before anyone drives out. Check your postcode to see if we cover you.

Which Enphase system do you have?

An Enphase system has no inverter on the wall. A microinverter sits under each panel, and the model is printed on each micro's label and on the gateway. The Enphase app and Enlighten show every panel in the array view.

IQ7 and IQ8: the IQ Series microinverters, one under each panel, reporting to an IQ Gateway. A supported range: a failed micro is a roof job for that one panel.
M190, M215 and M250: the older M-series microinverters. Several failing at once usually means a whole-system conversation rather than one micro at a time.
Envoy, Envoy-S and IQ Gateway: the gateway that collects data from every micro over the house wiring and sends it to Enphase. Most reporting faults start here, not on the roof.

All 17 Enphase error codes, explained

Enphase rarely uses numbers. A problem shows up in one of three places: a status in the Enphase app, like Microinverter not reporting or Production issue, the network light on the gateway, or the small LED under each micro. All 17 are in one table below. The number in brackets after each code's name is its source in the reference list.

Stop and call A safety or hardware fault that nobody can fix from a phone. Do the one safe restart at most, then call.
Worth a look Something to check or restart safely. If it comes back, book a visit.
Wait and watch The inverter has paused for a reason outside itself, usually the grid or the light, and restarts on its own.

We always err on the cautious side: when a code sits between two ratings, it gets the higher one.

3 stop and call, 8 worth a look, 6 wait and watch.

Error code	What it means	What to do
AC frequency out of rangeEnphase AC frequency out of range	Grid frequency out of range^[1] The micro measured the mains frequency outside its allowed band and stopped until it is back in range. This comes from the network, not your system, and Enphase says it is usually transient; if many micros trip at once it usually points to the AC supply. Best effort · from a secondary copySafe steps in the lookup	Wait and watch
AC voltage out of rangeEnphase AC voltage out of range	Grid voltage out of range^[1] The micro measured the mains voltage outside its allowed band and stopped until it is back in range. Enphase says this is usually transient and self-correcting; if it persists on a whole branch, the cable run, terminations or the street voltage are the usual causes, which is an electrician's check. Best effort · from a secondary copySafe steps in the lookup	Wait and watch
DC resistance low - power offEnphase DC resistance low - power off	Ground fault, micro shut down^[2][3] The micro's insulation sensor measured too low a resistance between its panel's DC leads and earth, so it shut itself off and stays off until an installer clears it with the gateway. Enphase lists defective panel insulation, damaged wiring or connectors and moisture as the causes, and the fault will not clear until the cause is fixed. The micro's LED shows solid red. Safe steps in the lookup	Stop and call
DC voltage too highEnphase DC voltage too high	Panel voltage too high^[1] The panel connected to this micro is putting out a higher voltage than the micro is rated for, so it will not run. It usually means a panel was fitted that does not match the micro, and an electrician needs to check the panel and micro pairing. Best effort · from a secondary copySafe steps in the lookup	Worth a look
DC voltage too lowEnphase DC voltage too low	Panel voltage too low^[6] The micro is not getting enough voltage from its panel to start, which Enphase's own status text ties to dawn, dusk and low light, so a whole system showing this early or late in the day is normal. One panel showing it in full sun while its neighbours run usually means that panel, its plug or its lead has a fault, and that is a roof job. Best effort · from a secondary copySafe steps in the lookup	Wait and watch
Envoy offlineEnphase Envoy offline	Envoy or gateway offline^[5] The Envoy or IQ Gateway has lost its internet connection, so the app stops updating and Enphase support cannot see the system remotely. The panels are usually still producing; the cause is nearly always a new router, a changed wifi password, the gateway unplugged, or a tripped breaker on its circuit. Safe steps in the lookup	Worth a look
Gateway LED amber or redEnphase Gateway LED amber or red	Gateway not reaching the cloud^[5] The network light on the Envoy S or IQ Gateway is amber or red, which means it is on your home network but cannot reach Enphase's servers. Production carries on; it is usually the internet connection, a router setting or a firewall. Safe steps in the lookup	Worth a look
GFDI faultEnphase GFDI fault	Ground fault detector tripped^[4] On the older M215 (the non-IG model) a solid red LED means the ground fault detector has tripped: current is leaking from the panel's DC wiring to earth. It is the M-series version of the DC Resistance Low fault, the micro stays off, and the panel wiring needs to be tested before it is reset. Safe steps in the lookup	Stop and call
Grid goneEnphase Grid gone	Grid lost, micro waiting^[1][7] The micro cannot see the mains, so it has stopped exporting, which is exactly what it must do in a blackout or when the solar breaker is off. Enphase's older manual lists Grid Gone as the anti-islanding trip, usually alongside an AC voltage or frequency event. The micros restart themselves about five minutes after good grid power returns. Best effort · from a secondary copySafe steps in the lookup	Wait and watch
Micro LED flashing orangeEnphase Micro LED flashing orange	Producing, not talking to Envoy^[2][3] A flashing orange LED under the micro means the grid is fine and it is producing, but it cannot hear the Envoy or IQ Gateway over the house wiring. Production is not affected; it is the communication path, usually the gateway's power point, interference or distance. Safe steps in the lookup	Worth a look
Micro LED flashing redEnphase Micro LED flashing red	No grid at the micro^[2][3] A flashing red LED under the micro means it cannot see mains power within its limits, so it is not producing. On a whole system that is a blackout, a tripped solar breaker or a grid voltage problem; on one branch it is usually a breaker or a cable connection for that branch. Safe steps in the lookup	Wait and watch
Micro LED flashing red and greenEnphase Micro LED flashing red and green	Micro needs a firmware update^[4] On the M-series a red and green flashing LED means the micro needs a firmware upgrade and has to be connected to an Envoy that is online. It is not a fault; the system just needs its Envoy connected to the internet so the update can come through. Safe steps in the lookup	Worth a look
Micro LED offEnphase Micro LED off	Micro not starting^[2][3] No light under the micro means it is not getting enough DC from its panel to turn on, which is normal in low light and at either end of the day. In full sun it points to the panel, its plug or lead, or a failed micro. Short red blinks right after DC is connected mean the micro failed its own startup, which is a replacement job. Safe steps in the lookup	Wait and watch
Microinverter not reportingEnphase Microinverter not reporting	Micro not reporting^[9] One or more panels have stopped sending data to the Envoy or IQ Gateway, so they show black in the app. Enphase says it is often a communication problem over the house wiring rather than a failed micro: heavy cloud, a tripped solar breaker, interference or a moved gateway. If the same panels stay black after a day or two of sun, that micro, its lead or its panel is faulty, and that is a roof job. Safe steps in the lookup	Worth a look
Over temperatureEnphase Over temperature	Micro too hot^[1] The micro has reported that it is running above its temperature limit under the panel; at critical temperature it stops producing until it cools. A micro that keeps doing this on ordinary days usually has a mounting or airflow problem or is failing, and that is a roof job. Heat shutdowns point at a failing fan, a blocked vent or a bad installation spot, so we treat them as a call. Best effort · from a secondary copySafe steps in the lookup	Stop and call
Production issueEnphase Production issue	Low or no production^[8] The app has flagged that the system is making less than expected or that one or more micros have made no power for five days. A run of cloudy weather or shading can trigger the warning on its own; the error level means a micro has genuinely stopped, which is a roof job. Safe steps in the lookup	Worth a look
Production offEnphase Production off	Micros switched off remotely^[10] The micros have been told to stop producing by a command, which is what the app shows while a system waits for network permission to operate or after an installer has switched it off remotely. Enphase raises a warning when 90 per cent or more of the micros are off this way. It is not a fault; ask whoever installed it whether it was switched off on purpose. Safe steps in the lookup	Worth a look

Got an Enphase error code? Free phone diagnosis in our service area

Our own licensed electricians cover Greater Adelaide and regional SA, and from North Brisbane up through the Sunshine Coast to Gympie. Check your postcode, then read us the code and tell us the install year. If it needs a visit, the callout is credited against the work.

How to reset Enphase microinverters safely

There is no DC isolator at the wall to switch on a microinverter system. A safe reset is mostly checks, in this order:

Check the solar supply main switch on the switchboard is on, and that the gateway's own circuit is on too.
Wait for full daylight and check the app again. After a blackout the micros restart themselves a few minutes after the grid is back.
For a reporting fault, check the internet is working on another device in the house, then restart the router.
Unplug or switch off the gateway, wait 60 seconds, power it back on and give it a few minutes. If it has a power cord, make sure it is in its original power point.
If the router or wifi password has changed, reconnect the gateway in the Enphase app. It needs a 2.4 GHz network.

Stay off the roof. Never open a micro or the gateway, and never touch the wiring. Never restart anything that smells hot or shows scorch marks. If the same panels stay black in the app after a day or two of sun, or the code comes back, stop and call.

Enphase microinverter repair or replacement?

On a microinverter system, our electricians test the whole system before blaming a micro: the AC supply and each branch circuit, earth continuity, the gateway and its link to the micros, and the system's own event history. A micro flagged with DC Resistance Low or a GFDI fault gets its panel's DC leads and connectors tested for insulation before anything is reset, because Enphase lists moisture, damaged wiring and panel insulation as the causes.

Enphase is still supported here, and many faults never need the roof: a gateway back online, a router setting, production switched back on. When a micro has failed on an IQ system, it is a roof job for that one panel. On the older M-series, where several micros failing at once is common, we quote a straight replacement and a hybrid option side by side, so a battery can go in now or later. The callout comes off whichever you choose.

We do this work in Adelaide, the Adelaide Hills, Gawler, the Barossa, the Fleurieu, Murray Bridge and Yorke Peninsula in South Australia, or North Brisbane, Caboolture, Bribie Island, the Sunshine Coast, Noosa and Gympie in Queensland only. Outside those areas, everything above still applies: take the code, its meaning and the urgency to a licensed electrician near you.

Where these Enphase error codes come from

Every Enphase code on this page was read from the maker's own manual wherever one survives (65 per cent of them). Where only a secondary copy survives, the row says "best effort" and so does the lookup. The numbers match the references in the code table.

[1]
Enphase reference manual5 codes, best effort, from a secondary copy
[2]
Enphase M250/M215 Installation and Operation Manual 141-00032 Rev 01b4 codes, from the maker's own document
[3]
Enphase support: IQ Series Microinverter status LED indications and error reporting (5 September 2026)4 codes, from the maker's own document
[4]
Enphase M250/M215 Microinverter Installation and Operation Manual 141-00032 Rev 01b (December 2016)2 codes, from the maker's own document
[5]
Enphase support: Fixing the Gateway Not Reporting system error (9 July 2026)2 codes, from the maker's own document
[6]
Enphase Envoy-S status flag text (pcu_ctrl dc-pwr-low: DC power too low, dawn, dusk or low light) as documented in a third-party Envoy-S data scraping write-up, with the Enphase support note that a micro with no light may not be receiving enough DC voltage to start1 code, best effort, from a secondary copy
[7]
Enphase IQ Series Microinverter status LED article1 code, best effort, from a secondary copy
[8]
Enphase support: How do I troubleshoot a Production Issue system status? (13 October 2025) and Understanding Microinverter Not Reporting and production issue alerts1 code, from the maker's own document
[9]
Enphase support: How to fix the Microinverters Not Reporting system error (21 July 2026)1 code, from the maker's own document
[10]
Enphase support: Understanding Microinverter Not Reporting and production issue alerts (12 July 2026)1 code, from the maker's own document

Tables last updated 21 October 2026

Enphase error code questions, answered

How do I read an Enphase error code?

Most Enphase codes are words, not numbers. Open the Enphase app and read the system status, or note the colour of the light on the gateway, then match the wording in the table: “Envoy offline”, “Production issue” and so on. If some panels show black in the array view, start with Microinverter not reporting. The LED under each micro is on the roof, so leave that one to an electrician.

What does Enphase Microinverter not reporting mean?

Microinverter not reporting is “micro not reporting”. One or more panels have stopped sending data to the Envoy or IQ Gateway, so they show black in the app. Enphase says it is often a communication problem over the house wiring rather than a failed micro: heavy cloud, a tripped solar breaker, interference or a moved gateway. If the same panels stay black after a day or two of sun, that micro, its lead or its panel is faulty, and that is a roof job. We rate it worth a look. See it in the table.

What does Enphase Envoy offline mean?

Envoy offline is “envoy or gateway offline”. The Envoy or IQ Gateway has lost its internet connection, so the app stops updating and Enphase support cannot see the system remotely. The panels are usually still producing; the cause is nearly always a new router, a changed wifi password, the gateway unplugged, or a tripped breaker on its circuit. We rate it worth a look. See it in the table.

Do you cover my area?

We work in Adelaide, the Adelaide Hills, Gawler, the Barossa, the Fleurieu, Murray Bridge and Yorke Peninsula in South Australia, or North Brisbane, Caboolture, Bribie Island, the Sunshine Coast, Noosa and Gympie in Queensland. Check your postcode to be sure. Outside those areas, this page still tells you what your code means and how urgent it is, and a licensed electrician near you can take it from there.

What does it cost to have an Enphase system looked at?

For homes in our service area, the phone diagnosis is free. If it needs a visit, there is a callout fee, and it is credited against any repair or replacement we do.

Will you work on an Enphase system you did not install?

Yes, if it is in our service area. Most of our repair work is on systems someone else installed. We test the whole system, not just the micro that looks at fault.

Why does my Enphase say a micro is not reporting?

Often it is the signal over the house wiring, not the micro: heavy cloud, a tripped solar breaker, interference, or a gateway moved to a different power point. Give it a day or two of sun. If the same panels stay black, that micro, its lead or its panel has a fault, and that is a roof job for an electrician.

Are my panels still working if the Envoy is offline?

Usually, yes. An offline Envoy or IQ Gateway means the app stops updating and Enphase cannot see the system remotely, but the micros carry on producing. The cause is nearly always a new router, a changed wifi password, the gateway unplugged or a tripped breaker on its circuit.

Where do the codes on this page come from?

From Enphase’s own manuals and support articles wherever they cover a code, and from mirrored or third-party copies of older Enphase documents where they do not. Each code in the table carries a numbered reference to its document in the source list.

Written by

Joe Deionno

Started in 2017 after years of subcontracting and seeing the dodgy operators at work; set out to be the installer people could trust. Oversees every install in both states.

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