Discovered an Optima 2 Plus panel today on my travels, went to do a full service for the customer.
When attempting to set, i had 6,5 & 2 on the visual display, obviously zone faults... However, i checked all cables, terminations & present voltage at the detectors.
All came back fine. What else could this be? The only thing I did not try today was replacement sensors (they are as old as the hills)
I'll hold my hand up and admit I've seen this panel maybe three times so i'm not overly familiar with it. Any suggestions?
Thanks