Fault code

INVT GD270 SPI Phase loss on input side

Diagnostic context

What SPI means on INVT GD270

SPI indicates phase loss or severe fluctuation on the R, S and T input phases.

Operating context: The manufacturer directs the check toward the incoming supply side. Verify the input power and then inspect the installation wiring.

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

Possible causes

  • Phase loss or violent fluctuation occurred on input R, S, T.

Recommended checks and actions

  • Check the input power.
  • Check the installation wiring.

Technical source

INVT GD270 Manual EN - Fault SPI — page 278