Also applies to:E-CHO-SI5KS2E-CHO-SI8KS2
What it means
Soft start fail — Soft start failure during inverter startup.
Cause: The inverter failed its soft-start sequence: the power stage could not ramp up in a controlled way at startup, which points to an internal component fault.
How to fix it
- Power down the inverter, wait 5 minutes for capacitors to discharge, then restart.
- If the fault recurs immediately or repeatedly, record the exact code and contact your installer or the manufacturer's service line.
Source: E-CHO-SI3KS2-Operation-Manual.pdf, p.16 · E-CHO-SI5KS2-Operation-Manual.pdf · E-CHO-SI8KS2-Operation-Manual.pdf