Looking for some insight. Have a TMS600 which keeps giving intermittent door zone fault. I have changed out 24VDC relays in the door zone circuit, and am waiting on the 240VAC larger inner/outter zone relays with the aux blocks on them to change out. I have also ordered a 30 oscillator vane reader to replace it as well.

I am wondering if anyone has come across this problem and if I am on the right track or if there is something different I should be doing?

You need to log in to see if your getting an inner door zone or outer door zone fault.. You need a current loop adapter to log in with hyper terminal.

Send me a PM of email address and I will send you the display document of the display with fault codes.