How do I fix my central vacuum? Check the power unit. Make sure it's plugged into an outlet and that the outlet is working. If it is, check the fuse or breaker box to make sure that the power unit hasn't tripped a breaker. If there is power to the unit, unplug it and plug it back in. If it still doesn't work, you may need to call a technician.

It seems like you have a few options. You could try to find a repair manual and do it yourself. You could take it to a repair shop. Or, you could buy a new one. It really depends on your skill level and how much money you want to spend. If you're handy and don't mind getting your hands dirty, trying to fix it yourself might be the best option. If you're not so handy or don't want to deal with the hassle, taking it to a repair shop might be the best option. And if you just want something new, buying a new one would be the easiest way to go.