Alarmed-To-Be-Here

Many thanks to all the people providing advice. I have managed to clear all the faults and have exited engineer mode successfully. The issue was with the outside bell wired connection to the board and I had connected to the terminal next to the correct terminal in error - my eye sight isn't what it used to be unfortunately. I then took the advice from al-yeti and used option 21 to set the zone configuration to (CC+Com A/T) from the previous setting (FSL 2K2/4K7).

Can anyone help me exit installer mode on my 9651 unit. I recently replaced the unit as it had a main board fault and I replicated the wiring to the new (used) unit from the original unit. I have powered up and then gone into installer mode and reconfigured the settings to my setup. Then in trying to leave installer mode it went through to 99: checking system and is now in a closed loop displaying - tamper bell, tamper Z01, tamper Z02, tamper Z03....................tamper Z08 and then it repeats the cycle. I can't get out of this closed loop and don't want to have to do a system reset and start again. Does anyone have any thoughts on why the unit is doing this and how I can resolve the issue?