How do I change the code on my accenta 6 alarm

not a car or truck it is a home alarm by Honeywell
no model number told
8SP400A?????
it needs service, if the main pad is dead. got wet is top cause
or just too old
this manual match up free

https://prod-edam.honeywell.com/content/dam/honeywell-edam/hbt/en-us/documents/manuals-and-guides/user-manuals/IE1-0040-Rev1-engineer%2520pdf.pdf?download=false

Please read the manual. Link attached:
https://www.manualslib.com/manual/1129455/Honeywell-Ade-Accenta-Gen4.html

Try here
http://www.alarm-supplies.com/user%20manuals/optima-accenta%20g3.pdf

If it is the tamper alarm configured by your BIOS (which you can determine by the sound's complexity--if you're hearing anything more complicated than a monotone beeping it's not BIOS controlled) I recommend restoring the default settings in your computer's BIOS setup.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/andrew_7b5641a71b84cd85

I'm not familiar with accenta plus alarms but if your motion detector is picking you up then your panel is beeping sounds like the motion is programmed incorrectly.

Default code for ade accenta panels is 0123

You may have this posted in the wrong product category. Please select another category appropriate to the problem and re-post the problem so the correct expert will see and respond to the question..
This is for car and truck problems related to factory installed systems not add on aftermarket systems.

This post can't be removed or moved, please re-post the question in the correct product category. Thanks

power the system down (Mains power) then remove the battery power leave a few minutes then apply the mains power first it should come up with a tamper fault, enter your code to silence the internal siren.re connect the battery replace the cover then do a full reset.

I dont know why you put this under "watches" but I found a Honeywell customer support site at:

http://www.security.honeywell.com/contact/support/index.html

I am not familiar with the Accenta alarm, but would like to help you. Is this an alarm to tell if your unit has been tampered with? Is this a password code to get you into your machine? With a little more info I may be able to help you out of your bind.
David