Fault code

INVT GD20 UPE Parameter upload error

Diagnostic context

What UPE means on INVT GD20

UPE is the GD20 parameter upload error. The manufacturer lists the keypad is not in good connection or offline. as one of the documented causes.

Operating context: Start with the manufacturer troubleshooting sequence. Check the environment and eliminate the interference source. Change hardware and ask for maintenance service.

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

Possible causes

  • The keypad is not in good connection or offline.
  • The keypad cable is too long and there is strong interference.
  • Part of the communication circuits of the keypad or main board have fault.

Recommended checks and actions

  • Check the environment and eliminate the interference source.
  • Change hardware and ask for maintenance service.
  • Change hardware and ask for maintenance service.

Technical source

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

INVT GD20 Manual EN - Fault tracking — page 96

Manual tiếng Việt INVT GD20 - Xử lý lỗi — page 84