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Hi All,

Had a new AC installed last spring. it worked fine all last summer. for the Past week, it has been having a funny thing happen (And the contractor we used and had a warranty through is now out of business). So the furnace fan fires correctly, air is pushed through the vents, but the outside unit does not turn on. I found the only way to get it to engage is to pull the bar out of the service disconnect, and push it back in. Within a few seconds the outdoor unit/Compressor/fan kicks on. it then runs as expected until it is off for a while (such as overnight when the temp drops(doesn't kick in for a while) and then the outside unit does not kick in any longer until I do the service disconnect thing. Any ideas?

Thanks,

-Matt
 

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Outdoor unit is probably going off on an error and cycling power resets it.
What is the model number of the unit?
You’ll have to look inside of the electrical cabinet to see the error.
 

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Have a tech look at this.
Have the disconnect box checked - where the bar makes a contact and the wiring.
Also, your compressor may have hard starting and you may need a relay/capacitor hard start.
A few summers ago I had a disconnect box where one wire contact was fried. I replaced the box and that wire, and the A/C came on.
 
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