Having replace the battery the alaem goes off , i can reset it by entering the code.
however "A" flashs on the control panel. There is a red power light showing but no daytime green light showing.
I have tried resetting it several times but no good all the fuses are OK. I did switch the AC off before attempting anything.
Can any one help, please

Colin, December 2016

Not to familiar with this embarrassment of an alarm but I highly suspect you have blown a fuse which needs replaced,btw how do you know the fuses are okay just looking at them?, you need a meter to check properly.

Replace the blown glass fuse.

Don't forget to turn the mains supply when inside the panel coz it kills!, December 2016