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Ask Kenton Guidry Your Own Question
Kenton Guidry
Kenton Guidry, HVAC Technician
Category: HVAC
Satisfied Customers: 966
Experience:  12 years install/service experience.
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2 stage thermostat wiring

Customer Question

please show the wiring diagram for a new 2 stage thermostat install.
Thanks
Submitted: 7 years ago.
Category: HVAC
Expert:  Kenton Guidry replied 7 years ago.

Can you please tell me the brand and model of the thermostat you are installing?

Also include the wire colors for me.
Customer: replied 7 years ago.

lennox 21 seer 2 stage compressor

wires: 2 white,2 yellow,1 green,1 red from thermostat...4 wires from condensing unit outside

Expert:  Kenton Guidry replied 7 years ago.
What is the thermostat model and brand?

Customer: replied 7 years ago.
white rodgers 2stage not a heatpump
Expert:  Kenton Guidry replied 7 years ago.
What model is the white rodgers?
Customer: replied 7 years ago.
1f83-277
Expert:  Kenton Guidry replied 7 years ago.
The diagram you need is on page three and four on the following link.

http://www.white-rodgers.com/wrdhom/pdfs/instruction_sheets/0037-6509.pdf



Do you have two stages of heating?
Customer: replied 7 years ago.
yes and 2 stage cooling
Expert:  Kenton Guidry replied 7 years ago.
Your yellow wires are you cooling, and your white are your heating. The green is for your fan, and the red is your power.

Normally there will be different colors for the second stage but in this case yours must not be.

I cannot tell you which yellow is for the first or second stage. Same goes for the white.
Customer: replied 7 years ago.
this doesn't help me,i need to know the correct wiring>
Expert:  Kenton Guidry replied 7 years ago.
Do you know what terminals the wires were hooked up on the old thermostat?
Customer: replied 7 years ago.
get back to you later.
Expert:  Kenton Guidry replied 7 years ago.
It is going to be difficult to know why yellow is your first stage and which yellow is your second. Same for heating with the white wires.