CooperMenvier alarm 9448+ Fault?

nope the green light is a mains failure indicator could be a duff transformer check to see if the plastic that holds it in place is deformed,if it is the you could be looking at a new panel check voltage at the blue leads going onto the pcb remove the plug from the pcb first you should get 17 .5 volts you may get away with a new trannie ,but i doubt it,hope this helps

gts
December 2015