Fault code

INVT GD270 LL Electronic underload fault

Diagnostic context

What LL means on INVT GD270

LL is the GD270 electronic underload fault. The manufacturer states that the VFD reports this condition according to the configured underload pre-alarm setting.

Operating context: Review the actual load condition together with the configured underload pre-alarm points. The manufacturer troubleshooting instruction for LL is focused on those two checks.

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

Possible causes

  • The VFD reports underload pre-alarm according to the setting.

Recommended checks and actions

  • Check the load and the underload pre-alarm points.

Technical source

INVT GD270 Manual EN - Fault LL — page 280