Gardtech 800 Alarm?

Our alarm previously worked perfectly.

A chip ID no 4 in one of our Fire Detectors was damaged by the service engineer when replacing it with a new detector. We have sourced & fitted a replacement chip but now the system isn't working properly and he says we need to update to a new system! Will this have damaged & caused all the ID chips to fail? What do we need to check in order to locate the fault.

Sam, November 2022


done
I'd suggest specialist support.
Here's a good starting point:
https://www.thesecurityinstaller.co.uk/community/topic/4505-id-id-biscuits/

Djdjd, November 2022