Fault code

INVT GD20 SPO Output side phase loss

Diagnostic context

What SPO means on INVT GD20

SPO is the GD20 output side phase loss. The manufacturer associates this fault with u,V,W phase loss input (or serious asymmetrical three phase of the load).

Operating context: Start with the manufacturer troubleshooting sequence. Check the output distribution. Check the motor and cable.

This diagnostic context is an editorial explanation. The possible causes and recommended checks below are the verified manufacturer troubleshooting content.

Possible causes

  • U,V,W phase loss input (or serious asymmetrical three phase of the load).

Recommended checks and actions

  • Check the output distribution.
  • Check the motor and cable.

Technical source

INVT GD20 Manual EN - P07.27 Current fault type — page 62

INVT GD20 Manual EN - Fault tracking — page 94

Manual tiếng Việt INVT GD20 - Xử lý lỗi — page 83