Q: I have a problem with my A/C. It's a central unit. It was working, then it just stopped like there was no power. It's only 3 yrs old. I have misplaced the warranty. Please send tips. I went outside, opened the unit, pressed down the relay and it was on, does this mean it's the thermostat? There is normally a spark when I take the cover off, but now there is nothing.

A: Thanks for your inquiry. I contacted a heating and air conditioning specialist, who said it sounded like you have no power. He suggests you check the fuses. To do that:

1. Turn off the circuit breaker to the air conditioner in the main panel.

2. Turn off the disconnect switch in the box next to the air conditioning unit.

3. Remove the two fuses and take them to a hardware store.

4. Hopefully, the unit will come back on when you install new fuses.

5. If not, call an air conditioning specialist.

To find a reputable air conditioning specialist, simply return to our site at http://www.servicemagic.com. Let us match you with the ideal service professional in your area.

Good Luck,
Tom Fishler Thomas Fishler Heating & Air Conditioning & Duct Cleaning Carmichael, California (916)485-5181