Updated: 06 February 2026

How do I change my Fermax intercom user code?

To change your intercom user code, you will need your Master Code – usually written on the front page of the manual at handover. Once you have this – follow the below instructions.

  1. Master Code followed by #

  2.  20# for Code 1 – 21# for Code 2 – 22# for Code 3 – all the way to 59.

  3. Enter new code followed by #

  4. Press asterisk button to exit programming