Ade Optima Compact Alarm- Resetting

[GeminiGirl]

I can't remember if I changed the alarm code that the previous owner gave me to something else. I have a vague feeling I might have and what it might be, but can't be sure. Now I'm scared to try either the original number or the one I think I might have changed it to in case I'm wrong on both counts. If they are wrong and the alarm goes off I won't know how to switch it off.

I'm wondering if there's a way to check by trying to reset it? If I follow the instructions to re set it and put in the code I think it is, will it give me some indication if it is wrong, ie, stop me proceeding, or the lights not showing etc, so that I know it is wrong, rather than just set it and hope for the best?

Thanks

GeminiGirl

[PeterJames]

You get three tries after that you need an engineer, easiest way to find out is to try setting it