Problem pairing a second alarm remote control

Anyone have any ideas on this please?

I need to programme a second alarm fob for the tracker alarm in my Bailey Unicorn Valencia 2011 so I can give a spare to the site owner whilst we’re away. The unit is on an annual seasonal pitch. I’m worried that if there’s a gale, the alarm might go off and we’ll be called to come on site but we’re several hours away. I may be over – worrying and it will never happen, but I worry as we had a fault with the alarm on another van causing it to go off and the site manager was on our case to come on site, 4 hours away, to turn it off!

I bought the spare fob from Bailey spare parts provider Prima Leisure. I managed to get pairing instructions for the new fob from them (a story in itself!). I won’t describe the procedure they gave me for security reasons, but it’s based on pressing the existing remote control a number of times until a certain number of beeps is heard and then doing some pressing of the new remote fob a certain number of times and waiting for a prescribed number of beeps.

The problem is that in trying to do the above procedure, the alarm doesn’t beep at all? Is this maybe because it’s out of season and we’re not hooked up to site power? Or is there some other reason the alarm isn’t sounding beeps at all?