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My optima 3 alarm has frozen, I press the buttons but nothing happens?

My optima 3 alarm has frozen. I press the buttons but nothing happens! The tamper alarm light is lit but I keep pressing the buttons but it makes no difference. Any ideas?
Lisa Stone, October 2010
how do you clear a fault in the panel of an optima xm alarm, the tamper light is on

d, February 2012
optima panels lock out when a tamper fault occurs, fault needs clearing before panel can be reset.

Graham, December 2010
could be a blown fuse in the panel.

mm, October 2010
link Click here to see other fixes for Optima.