grid-gone on an Enphase Energy Enphase IQ8 microinverters: Microinverter reports power from the utility is no longer present or out of voltage/frequency specification (anti-islanding)
Short answer
On an Enphase Energy inverter, grid-gone means: Microinverter reports power from the utility is no longer present or out of voltage/frequency specification (anti-islanding). The inverter stops until the fault clears or is reset. An engineer is needed to fix the cause.
Reviewed 24 September 2026 · 1 source
What it means
The manual says: Microinverter reports power from the utility is no longer present or out of voltage/frequency specification (anti-islanding).
Part involved: grid presence.
When it shows: Microinverter reports power from the utility is no longer present or out of voltage/frequency specification (anti-islanding).
Likely causes:
- Power cut; tripped solar breaker; wiring fault on part of a branch.
Is it safe?
| Does the inverter stop? | Yes |
|---|---|
| Severity | Fault — clears by itself when the condition goes |
| Engineer needed? | Yes |
The inverter stops until the fault clears or is reset.
Resetting itself: yes.
Manual reset: Automatic when grid returns.
What you can check
- Open the Enphase App (or Enlighten) and note the event name, affected microinverter serial number(s) and date/time for your installer.
- Check the solar circuit breaker(s) in the consumer unit are on.
- Grid-tied microinverters must stop in a power cut unless you have an Enphase backup system.
What the engineer will check
- If repeated on one unit/part of a branch, check branch wiring and contact Enphase Support.
Who to ask for: Enphase-certified installer / MCS PV installer.
Certification: Qualified electrician (BS 7671; MCS-certified PV installer for work on the PV array/DC side).
What you might notice
Sources
- Installer's Guide to Troubleshooting an Enphase System ↗ · August 2014 · page 42 · Reviewed 24 September 2026
A code explains what the controller detected, not a confirmed root cause.
Reviewed: 24 September 2026