Press *2 if zone 6 on the keypad is lit the the following is the problem.
6. TELEPHONE LINE TROUBLE/LINE CUT - This light will illuminate when there is telephone line trouble or the telephone line has been cut. The service light will remain lit until the telephone trouble clears and a user code is entered.
Expander box tamper will only show if you have pressed *2 and the number 1 was lit. By pressing 1 it will then show you system faults from 1-7.