dc-voltage-too-high on an Enphase Energy Enphase IQ8 microinverters: Microinverter reports DC input voltage from the PV module is too high
Short answer
On an Enphase Energy inverter, dc-voltage-too-high means: Microinverter reports DC input voltage from the PV module is too high. The inverter keeps running with some functions stopped. An engineer is needed to fix the cause.
Reviewed 24 September 2026 · 1 source
What it means
The manual says: Microinverter reports DC input voltage from the PV module is too high.
Part involved: module DC input.
When it shows: Microinverter reports DC input voltage from the PV module is too high.
Likely causes:
- Incompatible module; firmware (if multiple units).
Is it safe?
| Does the inverter stop? | Partly |
|---|---|
| Engineer needed? | Yes |
The inverter keeps running with some functions stopped.
Resetting itself: unknown.
Manual reset: See engineer checks.
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.
- Contact your installer.
What the engineer will check
- Check module compatibility; if several units, contact Enphase Support re firmware.
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