Maxsys PC4020 Problems

About a week ago Verizon announced they were changing our Fios phone service from the current analog system to digital service. At about 3AM the alarm went off startling my wife and I, but was most upsetting was that our land line phone service was out leaving me to think that someone may had cut the phone line., also the keypad display didn't show any zone faults. I checked the phone line coming into the house and everything was intact. About 1/2 hour later the phones started working again, it wasn't until then that I realized that was the date that Verizon had said they were going to do the conversion and it must have been something they did at the CO to set off the alarm. In lieu of a monitoring service, I have the system set up to call our cell phones and a family member around the corner. That night no one was called, and since then it doesn't call out when the alarm is tripped. I checked the phone line at the alarm panel and there is a good dial tone, I also tried reversing the tip & ring to see if that would work (some phone devices can be polarity sensitive). I have monitored the phone line at the panel and tripped the alarm, there is no attempt to dial anything. On top of that, now my installers code doesn't work anymore (it was working after the Fios fiasco)...I also tried the default code which doesn't work. I'm about to try a hardware reset, but I'd like to know if anyone has any ideas I can try before I do. I installed this system myself and it has worked flawlessly for several years. I'm not an installer, but I am an electrical engineer and have the Installer's Manual. Any help would be greatly appreciated.

Reply to
MRG1999
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Sounds a bit like the the on board battery keeping the clock and the internal programming intact has died. Try changing it, then factory default and reprogram. That will likely fix the problem

Reply to
tourman

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