Fault code

INVT GD270 UPE Parameter upload error

Diagnostic context

What UPE means on INVT GD270

UPE identifies a parameter upload error on the GD270. The manufacturer table links the error to keypad cable connection, interference from a long keypad cable, and keypad or mainboard communication-circuit problems.

Operating context: Unlike a general keypad communication fault, UPE is identified during the parameter upload operation. Evaluate the keypad communication path in the context of uploading parameters.

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

Possible causes

  • Keypad cable connected improperly or disconnected.
  • Keypad cable too long, causing strong interference.
  • Keypad or mainboard communication circuit error.

Recommended checks and actions

  • Check for and remove the external interference source.
  • Replace the hardware and seek maintenance services.
  • Replace the hardware and seek maintenance services.

Technical source

INVT GD270 Manual EN - Fault UPE — page 279