Siren won't turn off

[beighmuddassir]

I have a comfort system installed at my house and couple of months ago I upgraded UCM ETH03. Since then everything has been going fine.
There was a thunderstorm in our area few days ago and a loud cloud burst was heard over our house with possible lightening strike to our roof. Soon after this, our alarms went off, the outside siren was activated. The keypad inside house displayed RS232 communication failure with Slave 1. Since I was not home at the time, I asked my wife to disconnect Comfort (by turn AC input off and disconnect battery) which helped to turn siren off.
When I arrived in evening I connected Comfort back to power, tried to turn off siren from keypad. I checked RS232 cable from main board to SEM (slave), reinstalled my backup files into comfort. This resolved error displayed on keypad but siren still kept going.
I eventually disconnected siren from Comfort as its was becoming annoying to neighbours.
Everything else is working fine since, except if I connect siren cables back to comfort, it activates siren and sound doesn\'t turn off.

I would appreciate your help in resolving this error.

Thanks
Muddi

[slychiu]

If there was a lightning strike, it may have damaged the siren output, even though the outputs ate protected by resetable fusesThe lightning surge would have come in through the siren through the wires
You would need to repair the board, or get a new oneOr use another putput wth relay to control the siren

[beighmuddassir]

Thanks Chiu,

I am happy to give it a try and see if connecting siren to another output resolves the issue.
I have few 12 V spare output ports with relay on the parent board as well as on SEM board which I potentially can swap with.

Once output connection to siren and strobe are changed, do I have to make any modifications in comfort for it to know that Siren is now on different output.

Cheers
Muddi

[slychiu]

If you use Output with relay, then you must program Intruder Alarm Response to turn in the Output. Other alarms eg Panic alarm should also have the same Response to turn on the output

Alarm Type 17 Security Off Response shoukd turn off the output