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 BillyHvac Your Own Question
BillyHvac, Journeyman HVAC Tech
Category: HVAC
Satisfied Customers: 22246
Experience:  Endorsed for unlimited heating, cooling, oil burners, boilers, refrigeration, hydronics
Type Your HVAC Question Here...
BillyHvac is online now
A new question is answered every 9 seconds

I have a FA4CNF024 and i need the wire diagram the

Customer Question

Customer: i have a FA4CNF024 and i need the wire diagram for replace the Transformer
JA: Thanks. Can you give me any more details about your issue?
Customer: iam trying to help to my cousin he remove the transformer for replacement but he forget to mark the wire
JA: OK got it. Last thing — HVAC Technicians generally expect a deposit of about $18 to help with your type of question (you only pay if satisfied). Now I'm going to take you to a page to place a secure deposit with JustAnswer. Don't worry, this chat is saved. After that, we will finish helping you.
Submitted: 12 months ago.
Category: HVAC
Expert:  BillyHvac replied 12 months ago.

do you have the same type trans former or an after market? and if so what is model of transformer?

Customer: replied 12 months ago.
I have the same transformer T40-24F3
Customer: replied 12 months ago.
In the air handler I have yellow black brown and red wire
Expert:  BillyHvac replied 12 months ago.

Ok the yellow and black are the hot wires into the transformer...the red wire from T goes from 24v side and the brown also from other 24 - side. see page 6 HERE

Customer: replied 12 months ago.
The yellow and black wire from the air handler where I need to put in the transformer?
Expert:  BillyHvac replied 12 months ago.

do you mean the transformer wires?

The black goes air handler black and the orange goes to air handler yellow.

The red is taped off and the white is taped off....are those the ones you mean?

Customer: replied 12 months ago.
I see on the diagram after I make the question
Expert:  BillyHvac replied 12 months ago.

the diagram does not show which transformer make sure you use as I directed.

If any issues let me know as there are 30 days of free follow up after the service is rated at top of page