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Carrier Performance Model No. CK5BXA048021AAAA, E2 code on…

Carrier Performance Model No...

Carrier Performance Model No. CK5BXA048021AAAA

Contractor's Assistant: I'll do all I can to help. How long have you been dealing with this?

E2 code on thermostat. Double checked wiring and checked for 24 vac bewtwn R and C. Assume thermostat is bad. Can you give me the wiring requirement to install an Nest thermostat?

Contractor's Assistant: Just to clarify, do you think this is a larger HVAC problem, or something specific to the thermostat?

Thermostat

Contractor's Assistant: Do you plan on doing the work yourself?

Yes

Contractor's Assistant: Anything else we should know to help you best?

Is a nest thermostat compatible with this model number?

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Answered in 6 minutes by:
8/21/2017
airheatman
airheatman, HVAC Technician
Category: HVAC
Satisfied Customers: 9,076
Experience: Furnace, A/C and heat pump specialist.
Verified

The Nest is compatable with most everything except communicating systems.

1.Give me model on furnace (Number you gave me is for coil)

2/Tell me what wires you had to what terminals on old tstat

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Actual model will be on a label on inside furnace panel just above burners.Remove panel to burner compartment and look inside. The model number will help me give accurate assistance for your specific unit.

Below is a link to a generic video showing where to find label with model number:

https://www.youtube.com/watch?v=KZfyeZOFdpU

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OK so the red and orange were not connected to anything and brown goes to R and everything works?

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Customer reply replied 10 months ago
as far as I can ascertain.

On Nest :

Brown will go to RH

Blue to C

Green to G and

White to W1

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If you have removed wires did you turn power off first?

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Customer reply replied 10 months ago
Ok thanks. I will wire accordingly. If I have a problem I will be back.

Do you get 24vac between blue and brown at thermostat right now?

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Customer reply replied 10 months ago
I have not removed any wires. I will get to it tomorrow.

OK remember to turn power off so wires do not touch and short.If you want look in furnace lower panel and locate the other end of these wires to verify brown goes to R,yellow to Y, Green to G blue to C and white to W on furnace board.I left out yellow on last post but it goes to Y1 on Nest

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Customer reply replied 10 months ago
Ok I will do as you recommend. Thanks.

If you have further questions, please let me know.

Thanks for letting me work with you.If my answer has been polite, professional,and thorough, please click one of the ratings before you go. If you still need help let me know!.Expert is not paid for assisting you until you rate answer.Feel free to follow up for 30 days at no additional cost. Bonus always appreciated if you feel justified.

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airheatman
airheatman, HVAC Technician
Category: HVAC
Satisfied Customers: 9,076
Experience: Furnace, A/C and heat pump specialist.
Verified
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