DSC siren stopped working

System: Moved into house 2 years ago. DSC system was already here. Many window/door detectors, smoke detectors, 3 keypads, 1 siren (specifics below)

Problem: We decided to paint the walls, and pulled out the siren and one (the main?) keypad case a bit from the wall. Somehow I think the keypad’s yellow cable disconnected (it told me keybus error) — I connected it back (actually disconnected and reconnected all wires for keypad).

Finished painting, put everything back… now problems.

Symptoms:

  • now the siren won’t ring (e.g. I arm the system, open a window, keypad says “System is in Alarm”, but no siren)
  • keypad under system troubles says Service Required: General Sys Trbl.

Troubleshooting:

  • Tried the system test (*6 -> code -> 4) — keypads buzz, but not the siren
  • Disconnected the Siren and tested it on a 9V battery — worked fine!
  • Reconnected siren back (being careful with wire connector), still doesn’t work

Any hints/ideas would be mighty helpful!

photos

Main Panel: PowerSeries PC1864

Siren: Ademco 747

Keypads: PowerSeries RFK5500

submitted by /u/buyingacarTA
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September 7, 2023
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