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Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 6022
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
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I need to know on a carrier air handle, the two wires coming

Customer Question

i need to know on a carrier air handle, the two wires coming from the outside unit connect to what and where on the air handle? these are 24volt
Submitted: 2 years ago.
Category: HVAC
Expert:  gotoman for ac replied 2 years ago.
The two wires from outside one will go to Y or yellow wire from thermostat and the other to C or common wire which may be brown on air handler. If you have a terminal board. Yellow from thermostat will go to Y2 along with one wire from outside. The other wire from outside will go to C on board. Russ
Customer: replied 2 years ago.
What if boardonly have b-c?
Customer: replied 2 years ago.
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Expert:  gotoman for ac replied 2 years ago.
If you could give me model number of air handler I can pull wiring diagram. Russ

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