solid-yellow on a Tigo Energy Tigo Cloud Connect Advanced + Tigo Access Point: Warning: discovery not initiated, or completed with errors (TAP count not set, <75% optimisers found), or internet not allowing upload
Short answer
On a Tigo Energy inverter, solid-yellow means: Warning: discovery not initiated, or completed with errors (TAP count not set, <75% optimisers found), or internet not allowing upload. 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: Warning: discovery not initiated, or completed with errors (TAP count not set, <75% optimisers found), or internet not allowing upload.
Likely causes:
- Warning: discovery not initiated, or completed with errors (TAP count not set, <75% optimisers found), or internet not allowing upload.
Is it safe?
| Does the inverter stop? | Partly |
|---|---|
| Severity | Warning |
| Engineer needed? | Yes |
The inverter keeps running with some functions stopped.
Resetting itself: unknown.
Manual reset: unknown.
What you can check
- Check home internet/router.
- Contact installer to re-run discovery.
What the engineer will check
- Check Equipment/Layout pages, TAP wiring, serial numbers in EI app.
Who to ask for: PV monitoring / MLPE.
Certification: MCS PV installer; Tigo-trained installer; electrical work to BS 7671.
What you might notice
Sources
- Cloud Connect Advanced (CCA) - LED status information ↗ · Reviewed 24 September 2026
A code explains what the controller detected, not a confirmed root cause.
Reviewed: 24 September 2026