1036 on a Fronius International GmbH Fronius GEN24 / GEN24 Plus: When connecting to the public grid the grid frequency was exceeded
Short answer
On a Fronius International GmbH inverter, 1036 means: When connecting to the public grid the grid frequency was exceeded. 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: When connecting to the public grid the grid frequency was exceeded.
Part involved: GEN24 inverter.
When it shows: When connecting to the public grid the grid frequency was exceeded.
Likely causes:
- Wait for grid frequency to normalise.
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.
What you can check
- Check Service Messages in Fronius Solar.web or the inverter's web interface (System > Event Log) and note the code.
What the engineer will check
Who to ask for: Fronius-trained installer.
Certification: Qualified electrician (BS 7671; MCS-certified PV installer for work on the PV array/DC side).
What you might notice
Sources
- Help with the Fronius GEN24 (homeowner status codes) ↗ · Web page retrieved 2026-09-24 · Reviewed 24 September 2026
A code explains what the controller detected, not a confirmed root cause.
Reviewed: 24 September 2026