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HVAC Guru
HVAC Guru, HVAC TECH
Category: HVAC
Satisfied Customers: 14000
Experience:  15yrs in the HVAC industry with certificates and degrees.
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I have a carrier split unit thats 4 years old and the new

Customer Question

I have a carrier split unit thats 4 years old and the new 410 freon type, the problem is sometimes it wont start when the thermostat calls for cooling, if I go outside and pull the service disconnect and cycle power it will run fine, this has happened twice this year
Submitted: 1 year ago.
Category: HVAC
Expert:  HVAC Guru replied 1 year ago.

Hello,

You may have a bad or loose connection on the thermostat wires to the outside unit. Check all the thermostat wire connections and see. The other possibility is a bad control board as you would be resetting it when pulling the plug and plugging it back in, these issues are always tough to say 100% as they are infrequent and until it becomes a constant issue it is always just a guess at the issue.

Customer: replied 1 year ago.
control board on the thermostat or the attic unit
Expert:  HVAC Guru replied 1 year ago.

The control board in the attic

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