Just an update on how I went on with the Exp 01 Tamper in case it will help others.

Firstly downloaded all relevant documentation. I knew I only needed a few lines of info but I wanted every crumb of information at hand. Expander diagram and info included. I did a crash course for hours to learn what was different about this type of system .  .  .!! I decided that everything was physically sound and it must just be the Tamper reset

must be set to option 1. So it was ring an installer or reset codes to default .  .  .Nah I'm rusty but I'll have a go.

First I hand to rule out the PIR lens\cover as possibly not seated correctly and the tamper was now because of this.    

I removed the cover and the internal siren sounded so I knew it had been in place correctly and micro switch and wiring good.

Secondly I removed the cover (with ear defenders on, don't laugh) and went through the

-MF -B NVM+B  +MF procedure and replaced the cover. The default codes now work user #### engineer #####

After entering the engineer code the keypad Exp 01 Tamper fault had gone but the alarm would not set has it now had another fault on one of the zones and it wouldn't omit so bought a new honeywell door switch for less than £1

and voila it is done. I altered some the default setting in programming but this only a simple setup 5 PIR 3 DOOR SW no monitoring etc.

After a walk test I set it and left.  

I have every respect for professional security installers and I do think £90+vat is worth it but I just had enough info and confidence to pull this off. I just wanted to do it myself.

Thanks (the comments I received really spurred me on- not sarcasm).

 

So had nothing to do with what you originally said 

yeah exp 01 was gone after engineer reset but after trying to set alarm with user code panel displayed

zone flt z06 which turned out to be door sw missing (new patios).