AIR Led doesn't turn on

Hello. -
The laser was working perfectly until, I got a fire alarm and then and I continued working with the laser but after few it start the fire alarm fire again, so I realised that the air led is not flashing any color, the air pump looks is on but the led on the laser is off and any time that I start with a new job, it stop and show fire alarm. - I think the issue is with air pump.