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open curcuit after power failure?

Power was out for four hours. When power was restored the security system did not power up. Panel is reading open curcuit.
Fred J, January 2009
Internal fuse checked ok and backup battery volts checked ok.

Fred J, January 2009
I wonder if the power surge that accompanies a restoration of supply has blown a fuse either in your fused spur that supplies the alarm panel, or more likely an internal quick blow type fuse (glass body) you'll have to look inside the panel to find that one.

Richard, January 2009