How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask airheatman Your Own Question
airheatman, HVAC Technician
Category: HVAC
Satisfied Customers: 8263
Experience:  Furnace, A/C and heat pump specialist.
Type Your HVAC Question Here...
airheatman is online now
A new question is answered every 9 seconds

Wiring diagram for installing a Honeywell Pro 3000 thermostat

This answer was rated:

Wiring diagram for installing a Honeywell Pro 3000 thermostat on Nordyne Single stage R410A heat pump?
Hello. My name is XXXXX XXXXX I'll do my best to help. Troubleshooting often requires meters and test equipment. Let's get started and see what we can do.Can you give me the model on your Honeywell? 3110 , 3210b etc?
Customer: replied 3 years ago.

Its a TH3210D1004


OK, one more question and we will get started. Do you have electric heating elements for backup heat?
Customer: replied 3 years ago.

Yes, It plugs into the outside unit.


Sorry but one more question since you say outside. What is model on the unit? Is it a self contained packaged heat pump?
Customer: replied 3 years ago.

Yes, It is a self contained packaged heatpump. I can run up the road and get the model number. I have the manual with me. Its a Q7RD / PPH3rd Series


Excellent .You will want to wire as follows:

R from outdoor to R on thermostat (24v power)

E from outdoor to E on thermostat (Heat strips for emergency heat)

W2 from outdoor to AUX on thermostat(Heat strips for backup heat)

O from outdoor to O at thermostat(Reversing valve)

Y from outdoor to Y at thermostat(AC contactor)

C from outdoor to C at thermostat (24v Common)

Green wire from outdoor to G at thermostat (Blower motor)

Customer: replied 3 years ago.


Thanks - Hopefully that will take care of it. I appreciate your help.

This should fix you up. Please rate answer when satisfied and let me know if you have further questions
airheatman and other HVAC Specialists are ready to help you