Puzzled Pete

Good point about changing the wiring to EOL, I already have the resistors, didn't give it any thought at the time of installation but now, having experienced a problem can appreciate how it would have made fault finding so much easier in my instance. Thanks for the suggestion.

Cheers, datadiffusion, linked com + A/T and works o.k. just need to find break in wiring - obvious suspect would be the replacement but will also have to investigate as to why I did not get a "Global tamper" alert ? maybe something to do with not being able to exit ? anyhow, once wiring sorted I can connect an additional sensor then cut the cable and see what happens. Many thanks to all who replied, very much appreciated ! P.S. If I had not got this fault then I would not have appreciated how old the battery was ! Although gett[ng a good voltage I switched off the mains and after about 45 minutes the alarm sounded due to low voltage - as the saying goes, every cloud has a silver lining.

I did not do a code reset as such as my original codes still worked, I did short the kickstart pins which reverted the user code to [xxxx] but have not done an NVM reset on the board so the installer code was the same. I have tried changing the attributes of the replaced sensor circuit from FE to NA and even removed the connection, and have changed another circuit to FE but I still get Zone Flt on all connected zones. As the battery is so old I disconnected it in case it may have been a factor but just got "missing battery" shown and unable to do anything.

I did not do a code reset as such as my original codes still worked, I did [1st stage reset] but have not done an NVM reset on the board so the installer code was the same. I have tried changing the attributes of the replaced sensor circuit from FE to NA and even removed the connection, and have changed another circuit to FE but I still get Zone Flt on all connected zones. As the battery is so old I disconnected it in case it may have been a factor but just got "missing battery" shown and unable to do anything.

Yes, just 4 wire, cc + anti tamper - code 21 set to 0 The fault on the original new board was that the siren would not activate and it was not until I fitted the replacement that I realised it was a different version but it has been working fine since I installed it in 2006

Hi, the house front door and frame was replaced so I fitted a new sensor in the frame and soldered pre marked wires. Nothing else was changed. code 99 - checking system, brings up "Zone Flt 01, 02, 03 etc." Code 97 is o.k., code 21 is set correctly, code 199 is 0 ohms on all zones. Removed replacement sensor connections from panel, still showing zone faults on remainder. Tried shorting "kick start" pins which re-set user code to default. Removed "anti tamper cct." - no change. Carried out a full re-programming after code 98 ( have not tried shorting NVM pins on the board though) I installed the alarm in 2006 with no PIR's, the battery is still the original and shows 12.8V. The original pcb was faulty from new so a replacement was fitted (9651EN-00) which is slightly different from the one shown on page 10 of the installation manual. Codes 48,49,56,58,59,134,135,137,138,140 plus others, are not available which I put down to it being a different version. Any thoughts? I am thinking I may need to replace the board ? Thanks in anticipation.