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Security & Fire Protection Systems/Trouble light won't go off despite replacing Battery


nodsc wrote at 2011-10-19 17:51:15
Be careful following the provided advice.  It resulted in my settings being lost and I don't have the access code so I have no trouble lights but the system is not active and I cannot restart it.

Frank Kurz wrote at 2011-10-27 20:42:44
The DSC PC-2550 uses non-volatile memory.  Removing power from the system won't affect any programmed settings.

Frank Kurz wrote at 2013-01-13 07:31:36
Your specific problem is unrelated to the advice given.  I've worked with DSC systems since the days of the PC-2000.  They all use non-volatile memory.

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Frank Kurz


Questions relating to Burglar Alarm and Security Equipment, Fire Alarm and Extinguishment Systems, Access Control, CCTV Systems, Installation, Service, Testing, Verification


30 years installing, servicing, and testing security, access control, extinguishment, and fire alarm systems

Chair of ULC Working Groups for Fire Alarm Testing (CAN/ULC-S536) and Fire Alarm Verification (CAN/ULC-S537), Executive Director of the Fire Protection Technicians Network (

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Associate in Science; Emergency Systems (University of British Columbia); Aircraft Maintenance Technology (BCIT)

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