A while back a very high profile customer wanted us to check his alarm just before he went away for a week.

He had had a fault several days before which was due to a low GSM.

when this happened to me.

I arrived on site and the Premier panel had an ATS path fault.

Polled the gsm both lines where fine, still showed ATS path fault

Technical recommended a powerdown/up of the system. This did not clear the ATS fault.

Then I turned off the ATS monitoring completely, no change so i rebooted no change.

They then instructed me to disable the com300 in the com port set up as we were not using one, and reboot. No luck.

Then they recommended to disconnect the GSM unit and reboot again nothing.

In the end i had to physical take the GSM off the footprint, reboot, this cleared the fault. Then power down and plug back on the gsm and power up again. This sorted it......Or so I thought.

I sent a bunch of signals all together and they got them so I dutifully left.

45 mins later, at like 5pm, got a call the customer had to go back to the house as they had an intruder signal. The panel showed nothing at all.

Can anyone guess what had happened???

Can anyone guess what had happened???

wrong system, eg its works & he assumes its home

Bet it was those pesky aliens again!

Signal still in Q to arc and went through after put back into service?

Nope something much simpler. Ill say tonight give a few more people a go

you missaligned the left pins and a pin4 became a pin3?

pin3 programmed wrong?

This a Redcare plug on gsm?

Piss poor engineer is my guess.

lol