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on keypad it say nvm?

on the key pad it say
nvm checksum flt
dave, August 2012
Reboot with new battery.

zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz

Alarm, August 2012
thought you had said kamikazi there mate :-) must rem my glasses

gts, August 2012
No doubt when you enter your code the system will go into a fault lockout, need the engineer in to reinitialise the system.

Possibly a crash and reprogramme, or a nvm replacement and reprogramme.

gts me think this guy is the one with the karizma :)

And welcome to the forum Aj :)

e manno, August 2012
make of panel would be good idea

gts, August 2012
memory chip fault.total power down and reboot.refit memory chip if fitted in a holder

A1, August 2012