Everything is off. I can't turn it back on to save my life. The central air doesn't work, the heat doesn't work, the fan doesn't work, I tried turning offf the circuit breaker for 3 min. I checked the thermostat, I checked the batteries in the thermostat. It like the system is locked or not getting any power.

Did you check the little plug - in fuse that `s in the circuit board? Is the door/cover on the furnace?

U need a multi-meter, to check for power start at the start ,the power 1st ties to the airhandler,check the transformer,, is power going into it? If so is there power /low voltage coming out of the transformer

Tell us more and let us know

Quote:

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Originally Posted by wmproop

did you check the little plug - in fuse that `s in the circuit board? Is the door/cover on the furnace?

u need a multi-meter,,to check for power start at the start ,the power 1st ties to the airhandler,check the transformer,,,is power going into it? if so is there power /low voltage coming out of the transformer

tell us more and let us know

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Where is the fuse and the circuit board?

Quote:

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Originally Posted by Crazyg999

where is the fuse and the circuit board?

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Do I have to unscrew something?