How to change the Texecom battery in a veritas alarm system?

We changed the battery. The tamper light and no 6 were both on. I entered the date and time, this cleared the tamper light. No 6 is still on, we are unable to arm the system. I worked out that the engineers code is 1 2 3 4 in the process of clearing the tamper mode. How can I clear No 6 and get the system to work again.
Your advice will be appreciated.
Kind regards, Louise

Louise
May 2014

Where does a full reset come into the equation?

acorn
March 2011

Oh you know it will not need a full reset do you.
Looked thru the programming?
Have the engineers code?

carry on, i`ll wait till you ask the next question without doing a search

Mad as a March Hair
March 2011

Search top right works wonders.

Different versions of this have been asked many many times

fedup with answering the same over & over
March 2011