Enphase error codes explained

Normal operation. The grid is normal and the microinverter is talking to the IQ Gateway.

What you can do

• No action needed - this is a status message, not a fault
• If it stays for a long time or the system isn't producing when it should, call your installer

IQ8 / IQ8+ / IQ8M / IQ8A / IQ8H microinverters · Guide only. All work must be done by a licensed electrician. Get help with this code

The grid is normal, but the microinverter is not communicating with the IQ Gateway, so monitoring may be missing.

What you can do

• Check that your home Wi-Fi/internet is working and restart your router
• Wait an hour - monitoring often reconnects by itself
• If the inverter screen also shows a fault, or the alarm stays for more than a day, call your installer

IQ8 / IQ8+ / IQ8M / IQ8A / IQ8H microinverters · Guide only. All work must be done by a licensed electrician. Get help with this code

The AC grid is either not present or not within the specification, so the microinverter is not producing.

What you can do

• Check whether the rest of your house or street has power, and check your network operator's outage map
• Check the switchboard for a tripped solar/inverter breaker - reset it once only; if it trips again, leave it off and call an electrician
• Once normal power is back the inverter usually reconnects on its own within a few minutes
• If the power is normal but the alarm stays, call your installer

IQ8 / IQ8+ / IQ8M / IQ8A / IQ8H microinverters · Guide only. All work must be done by a licensed electrician. Get help with this code

The microinverter has detected low insulation resistance between the panel wiring and earth (possible defective module insulation, wiring/connectors or moisture) and has stopped producing. It stays off until the sensor is reset.

What you can do

• Keep clear - do not touch the panels, rooftop isolators, DC cables or the inverter
• Note the code and whether it appears in wet weather or early morning - this helps the electrician
• If you see smoke, smell burning or hear crackling, keep everyone away and call 000
• Call a licensed electrician or Total Solar - insulation and earth faults need testing with proper equipment

IQ8 / IQ8+ / IQ8M / IQ8A / IQ8H microinverters · Guide only. All work must be done by a licensed electrician. Get help with this code

Short red blinks after DC power is first applied indicate a failure during microinverter start-up.

What you can do

• Note the code, time and whether it clears by itself
• You may restart the system once using the owner shutdown/start-up steps in your manual. Do not open covers or touch cabling
• If the code returns or the system stays offline, call your installer - internal faults are a warranty/technician job

IQ8 / IQ8+ / IQ8M / IQ8A / IQ8H microinverters · Guide only. All work must be done by a licensed electrician. Get help with this code

AC frequency is the frequency at which voltage varies on the electricity network. The microinverter reports that this value is changing more rapidly than allowed. Frequency Changing Too Fast events are usually transient and self-correcting by the electricity network.

What you can do

• This is caused by the mains frequency moving outside the allowed range, usually briefly
• The inverter reconnects by itself once the grid is stable
• If it keeps happening, note the times and call your installer

Envoy gateway + M215/M250 microinverters (older, 50 Hz) · Guide only. All work must be done by a licensed electrician. Get help with this code

The microinverter reports that the frequency coming from the electricity network is either too low or too high as specified by applicable regional standards. AC frequency is the frequency at which voltage varies on the electricity network. Frequency Out of Range events are usually transient and self- correcting by the electricity network. When the microinverter detects an out of frequency condition, it must remain offline until the electricity network has been within acceptable limits continuously for a short period of time (seconds to minutes, varies by region). If, during that time, the utility again exceeds or falls short of acceptable limits, the timer must restart and the microinverter may not begin producing power for an additional short period following the last out- of-bounds condition.

What you can do

• This is caused by the mains frequency moving outside the allowed range, usually briefly
• The inverter reconnects by itself once the grid is stable
• If it keeps happening, note the times and call your installer

Envoy gateway + M215/M250 microinverters (older, 50 Hz) · Guide only. All work must be done by a licensed electrician. Get help with this code

The microinverter is temporarily unable perform power conversion. If the condition repeats or persists: Contact your installer to arrange for the installation of a replacement microinverter.

What you can do

• Check from a safe distance that the inverter is shaded, has clear space around it and that nothing is blocking the vents
• It usually recovers once it cools down
• If it repeats often or you can hear a noisy/failed fan, call your installer

Envoy gateway + M215/M250 microinverters (older, 50 Hz) · Guide only. All work must be done by a licensed electrician. Get help with this code

The microinverter reports that the average AC voltage coming from the utility over the past 10 minutes was too high for the configured grid profile.

What you can do

• This is usually caused by the mains supply, not the solar system
• The inverter normally reconnects by itself once grid voltage is back in range
• If it happens often (especially on sunny afternoons), note the times and call your installer - they can check the voltage and settings and talk to the network if needed

Envoy gateway + M215/M250 microinverters (older, 50 Hz) · Guide only. All work must be done by a licensed electrician. Get help with this code

The microinverter reports that the AC voltage coming from the utility is either too low or too high as specified by applicable regional standards. When a microinverter detects the voltage out of range condition, it does not produce power (per regulation) until the utility voltage returns within acceptable limits for several minutes (time varies by region). If during that time the utility voltage again goes beyond acceptable limits, the timer restarts.

What you can do

• This is usually caused by the mains supply, not the solar system
• The inverter normally reconnects by itself once grid voltage is back in range
• If it happens often (especially on sunny afternoons), note the times and call your installer - they can check the voltage and settings and talk to the network if needed

Envoy gateway + M215/M250 microinverters (older, 50 Hz) · Guide only. All work must be done by a licensed electrician. Get help with this code

The Envoy has started a change to the grid profile for the microinverters. This process may take a few minutes. No action is required. xx = grid profile name yy = Regional specification name.

What you can do

• No action needed - this is a status message, not a fault
• If it stays for a long time or the system isn't producing when it should, call your installer

Envoy gateway + M215/M250 microinverters (older, 50 Hz) · Guide only. All work must be done by a licensed electrician. Get help with this code

The microinverter is not producing power due to a software problem.

What you can do

• Make sure the system is online so it can receive updates
• Restart the system once using the owner steps in your manual
• If the alarm stays, call your installer - settings and firmware must be fixed by them or the manufacturer

Envoy gateway + M215/M250 microinverters (older, 50 Hz) · Guide only. All work must be done by a licensed electrician. Get help with this code

The microinverter was reset, either following a successful software download or by user command.

What you can do

• No action needed - this is a status message, not a fault
• If it stays for a long time or the system isn't producing when it should, call your installer

Envoy gateway + M215/M250 microinverters (older, 50 Hz) · Guide only. All work must be done by a licensed electrician. Get help with this code

The Envoy has received a control request made via the Envoy interface (Administration > Device Conditions and Controls page) or via Enlighten. This uncommon condition will occur only during isolated troubleshooting procedures by Enphase personnel.

What you can do

• No action needed - this is a status message, not a fault
• If it stays for a long time or the system isn't producing when it should, call your installer

Envoy gateway + M215/M250 microinverters (older, 50 Hz) · Guide only. All work must be done by a licensed electrician. Get help with this code

This rare condition occurs if the microinverter reports an internal temperature that exceeds its rated range. It reacts by producing less power to reduce internal temperature. This reflects internal temperature coming from a sensor inside the microinverter, not the ambient temperature. Once the internal temperature of the microinverter is once again within normal limits, it will resume full power production and this event message will clear.

What you can do

• Check from a safe distance that the inverter is shaded, has clear space around it and that nothing is blocking the vents
• It usually recovers once it cools down
• If it repeats often or you can hear a noisy/failed fan, call your installer

Envoy gateway + M215/M250 microinverters (older, 50 Hz) · Guide only. All work must be done by a licensed electrician. Get help with this code

This condition may occur at sunrise or sunset, while the modules are covered with snow, or during very bad weather. This event indicates that sunlight levels are too low for effective production. Once sunlight levels increase, the microinverter resumes power production and this event message will clear.

What you can do

• This is normal at dawn, dusk, in heavy cloud or when panels are shaded
• No action needed if it clears once the sun is up
• If it shows in full sun, call your installer

Envoy gateway + M215/M250 microinverters (older, 50 Hz) · Guide only. All work must be done by a licensed electrician. Get help with this code

An insulation resistance (IR) sensor in the microinverter measures the resistance between the positive and negative PV inputs to ground. If either resistance drops below a threshold, the microinverter raises this condition. This may indicate defective module insulation, defective wiring or connectors, moisture ingress, etc.

What you can do

• Keep clear - do not touch the panels, rooftop isolators, DC cables or the inverter
• Note the code and whether it appears in wet weather or early morning - this helps the electrician
• If you see smoke, smell burning or hear crackling, keep everyone away and call 000
• Call a licensed electrician or Total Solar - insulation and earth faults need testing with proper equipment

Envoy gateway + M215/M250 microinverters (older, 50 Hz) · Guide only. All work must be done by a licensed electrician. Get help with this code

The microinverter reports that DC input voltage from the PV module is too high.

What you can do

• Check that your home Wi-Fi/internet is working and restart your router
• Wait an hour - monitoring often reconnects by itself
• If the inverter screen also shows a fault, or the alarm stays for more than a day, call your installer

Envoy gateway + M215/M250 microinverters (older, 50 Hz) · Guide only. All work must be done by a licensed electrician. Get help with this code

The microinverter reports that DC input voltage from the PV module is too low. If this condition does not clear during hours of full daylight, the microinverters may be heavily shaded or covered by snow.

What you can do

• Check that your home Wi-Fi/internet is working and restart your router
• Wait an hour - monitoring often reconnects by itself
• If the inverter screen also shows a fault, or the alarm stays for more than a day, call your installer

Envoy gateway + M215/M250 microinverters (older, 50 Hz) · Guide only. All work must be done by a licensed electrician. Get help with this code

The Envoy has started a software upgrade to the indicated microinverter.

What you can do

• No action needed - this is a status message, not a fault
• If it stays for a long time or the system isn't producing when it should, call your installer

Envoy gateway + M215/M250 microinverters (older, 50 Hz) · Guide only. All work must be done by a licensed electrician. Get help with this code

The Envoy has successfully delivered a software upgrade to a microinverter.

What you can do

• No action needed - this is a status message, not a fault
• If it stays for a long time or the system isn't producing when it should, call your installer

Envoy gateway + M215/M250 microinverters (older, 50 Hz) · Guide only. All work must be done by a licensed electrician. Get help with this code

The Envoy was unable to successfully deliver a software upgrade to a microinverter.

What you can do

• Make sure the system is online so it can receive updates
• Restart the system once using the owner steps in your manual
• If the alarm stays, call your installer - settings and firmware must be fixed by them or the manufacturer

Envoy gateway + M215/M250 microinverters (older, 50 Hz) · Guide only. All work must be done by a licensed electrician. Get help with this code

This message displays after the Envoy has tried unsuccessfully three times to start up. This condition does not affect your system’s ability to produce power. When the connection is restored, the Envoy will catch up with the transmission of any/all energy data it has stored.

What you can do

• Check that your home Wi-Fi/internet is working and restart your router
• Wait an hour - monitoring often reconnects by itself
• If the inverter screen also shows a fault, or the alarm stays for more than a day, call your installer

Envoy gateway + M215/M250 microinverters (older, 50 Hz) · Guide only. All work must be done by a licensed electrician. Get help with this code

The Envoy file system integrity audit has failed.

What you can do

• Note the code, time and whether it clears by itself
• You may restart the system once using the owner shutdown/start-up steps in your manual. Do not open covers or touch cabling
• If the code returns or the system stays offline, call your installer - internal faults are a warranty/technician job

Envoy gateway + M215/M250 microinverters (older, 50 Hz) · Guide only. All work must be done by a licensed electrician. Get help with this code

This message displays when the selected grid profile is incompatible with microinverter software or hardware. This condition can affect your system’s ability to produce power.

What you can do

• Make sure the system is online so it can receive updates
• Restart the system once using the owner steps in your manual
• If the alarm stays, call your installer - settings and firmware must be fixed by them or the manufacturer

Envoy gateway + M215/M250 microinverters (older, 50 Hz) · Guide only. All work must be done by a licensed electrician. Get help with this code