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I have a Totaline p374 and want to replace this one with a…

Customer Question
I have a Totaline...

I have a Totaline p374 and want to replace this one with a nest thermostat pro. on the P374 i have W1/O/B, Y1, G, R and C. connected. Y1, G i see right away. What about W1/O/B, R and C?

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

No, just the thermostat. I am replacing only the p374 for a Nest Pro.

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

Yes.

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

No, not in this stage.

Submitted: 4 months ago.Category: HVAC
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Answered in 44 minutes by:
3/16/2018
HVAC Technician: airheatman, HVAC Technician replied 4 months ago
airheatman
airheatman, HVAC Technician
Category: HVAC
Satisfied Customers: 9,206
Experience: Furnace, A/C and heat pump specialist.
Verified

My name is ***** ***** I am happy to be able to work with you on this today.Please be patient as I respond as sometimes it takes me a few moments to gather proper manuals and specifications on your equipment in order to provide accurate answers.Please wait until we are finished to rate my answer.Just to let you know, the website will be offering a live phone call for an additional fee. Due to my current work load and responsibilities I may not be available for the live phone call .Please note that there is an additional cost for the service and if a technician calls it may be a different technician. However we can continue here as long as needed .

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HVAC Technician: airheatman, HVAC Technician replied 4 months ago

Do you know what type of system you have? Gas heat and electric ac or a heat pump? If you don't know give me nodel on indoor and outdoor units.

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Customer reply replied 4 months ago
Electric ac & heat
Customer reply replied 4 months ago
It is a gas heat and electric AC - so no heat pump.
On the totalling thermostat, i control both heat and cold of course.
Thanks,
Bert
HVAC Technician: airheatman, HVAC Technician replied 4 months ago

Excellent.Wire as shown on link I sent

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