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 Phil Your Own Question
Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 6022
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
Type Your HVAC Question Here...
Phil is online now
A new question is answered every 9 seconds

I have a heat pump with propane emergency backup. My old

Customer Question

I have a Bryant heat pump with propane emergency backup. My old thermostat has an orange and an E wire. what do I connect these wires to on a Honeywell RTH9580 thermostat?
JA: Did you double-check the thermostat's settings? And what about the filters?
Customer: i did not install the new thermostat yet as I am checking for compatablility first
JA: Do you plan on doing the work yourself?
Customer: yes I contacted 3 different HVAC contractors in this beach region and everyone is so busy that they never returned the calls. I installed a whole house Aprilaire dehumidifier on the system yesterday and working on the thermostats today
JA: Anything else we should know to help you best?
Customer: Not really the Honeywell requires a C wire and we have a C,W2, R, G,O,Y,and E wires.
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the HVAC Technician about your situation and then connect you two.
Submitted: 1 year ago.
Category: HVAC
Expert:  Brian HVAC Guy replied 1 year ago.

Hi I'm Brian and I'm here to help!

On your old thermostat control, is the only time the propane furnace ran when you physically changed the thermostat setting to Emergency Heat? Did the thermostat ever bring on the propane furnace automatically?