I've just had some electrical work done, which involved cutting the power. This of course set the alarm going. I've used the standard code to cancel the siren but the blue strobe light is still going. They keypad is glowing green suggesting it's got power but the indicator lights are all dark. I've tried using the engineer code to reset a strobe test but this hasn't worked. Does anyone have any ideas how I cancel the flashing light. I've never used the alarm so I'm not bothered if the solution involves a permanent disable! Thanks.