gateway-failure on an Enphase Energy Enphase IQ Gateway / Envoy-S: The Envoy has detected a software problem
Short answer
On an Enphase Energy inverter, gateway-failure means: The Envoy has detected a software problem. The inverter keeps running. An engineer is needed to fix the cause.
Reviewed 24 September 2026 · 1 source
What it means
The manual says: The Envoy has detected a software problem.
Part involved: Envoy / IQ Gateway.
When it shows: The Envoy has detected a software problem.
Likely causes:
- Gateway software fault.
Is it safe?
| Does the inverter stop? | No |
|---|---|
| Severity | Fault — needs a manual reset once the cause is fixed |
| Engineer needed? | Yes |
The inverter keeps running.
Resetting itself: no.
Manual reset: Unplug the Envoy and plug it back in once; if it returns, contact Enphase Support.
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.
- Enphase's guide says unplug the (plug-in) Envoy and plug it back in - do this only once. Hard-wired gateways: ask your installer.
What the engineer will check
- Contact Enphase Support; replace under warranty.
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 40 · Reviewed 24 September 2026
A code explains what the controller detected, not a confirmed root cause.
Reviewed: 24 September 2026