HVAC

Have HVAC Questions? Ask an HVAC Expert for Answers

Ask an Expert,
Get an Answer ASAP!

HVAC
This answer was rated:

What terminal dose the black wire go to, For the last hour,

What terminal dose the...

What terminal dose the black wire go to

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

For the last hour

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

Yse

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

We have the white to the w terminal and red to red terminal and green to g terminal

Show More
Show Less
Ask Your Own HVAC Question
Answered in 3 minutes by:
1/22/2018
BillyHvac
BillyHvac, Journeyman HVAC Tech
Category: HVAC
Satisfied Customers: 22,917
Experience: Endorsed for unlimited heating, cooling, oil burners, boilers, refrigeration, hydronics
Verified

hello, do you just have a gas furnace with ac?

Ask Your Own HVAC Question

If you have a gas furnace..

we use terminals R,W,Y,G

R is power in and usually red

W is for heat

Y is for ac

G is for the indoor blower

Do you have a wire on Y yet?

Ask Your Own HVAC Question
Customer reply replied 27 days ago
What terminal do we put the black wire

Your wire is not the traditional color code...that is why I asked if you have a wire on Y terminal yet?

Ask Your Own HVAC Question
Customer reply replied 27 days ago
We don’t have a yellow wire

I understand,...that is the problem...you do not have the correct color coded wire, so someone just used the black as something else....I am thinking your black goes on Y..if there is no wire on Y then you do not have any ac. Do you have access to the indoor furnace?

Ask Your Own HVAC Question
Customer reply replied 27 days ago
we connected the black wire to the yellow terminal and still no responds

if you touch the red wire to the green...does the indoor blower start?

Ask Your Own HVAC Question
Customer reply replied 27 days ago
the blower stared
Customer reply replied 27 days ago
The fan works but the heat doesn’t come on

now red to white...does heat start

Ask Your Own HVAC Question
Customer reply replied 27 days ago
red wire is not in the terminal and the fan is running

Take the red wire...and just the white wire...no terminals....twist the red wire to the white wire..does the furnace start?

Ask Your Own HVAC Question
Customer reply replied 27 days ago
it stared

Thank you....now last...take the red wire and the black wire and connect together...does the outdoor ac unit kick on?

Ask Your Own HVAC Question
Customer reply replied 27 days ago
No it is not working

and there are no other wires?..only red, black, white and green?

Ask Your Own HVAC Question
Customer reply replied 27 days ago
AC worked with the same wires on the old thermostat

do you only have red, black, white and green wires?

Ask Your Own HVAC Question
Customer reply replied 27 days ago
Are you still there
Customer reply replied 27 days ago
That are the only wires we have

the only choice for the black wire is Y...we know the white wire is heat the green wire is blower...that leaves only the black wire for ac....have you tried the old thermostat again? I think the issue is not related to thermostat....the black wire is the only choice left and red to black should start the ac outdoor unit

Ask Your Own HVAC Question
Customer reply replied 27 days ago
We bought a new terminstat because the printing was to small. It worked just fine.
Customer reply replied 27 days ago
It was a honey well also

Put the old back on and try it...I am betting it does not work on ac....either there is a delay timer in the ac or something is wrong, power off etc....but we have one choice for a ac wire and it is the black...and red to black actually bypasses the thermostat and does a direct call for ac.

In ac the thermostat connects red to green for the fan and in your case red to black for the outdoor unit.

Try your old thermostat and see what happens

Ask Your Own HVAC Question
Customer reply replied 27 days ago
We put the old thermostat on and now it’s not working
Customer reply replied 27 days ago
The old thermostat is working now. The only think different is that on the old thermostat there is a jumper wire from the r to the rc
Customer reply replied 27 days ago
our old thermostat is working so now how do we get the new one to work?
Gaztech
Gaztech, HVAC Technician
Category: HVAC
Satisfied Customers: 670
Experience: Owner at Gaztech
Verified

Hi I am Gaztech1, I will assist you with your issue.

Don't forget to rate the 5 star rating AT THE TOP OF PAGE if we are done. this will credit me for assisting you.

What is the exact make and model of new thermostat?

Ask Your Own HVAC Question
Customer reply replied 26 days ago
The make is a Honeywell model t5/5-1-1 rth7460D

Thanks, ***** ***** please

Ask Your Own HVAC Question

Did you do configure thermostat with system setup ?

Ask Your Own HVAC Question
Customer reply replied 26 days ago
the only difference is that the old one had a jumper wire from the R terminal to the RH terminal.

Can you put that jumper on new thermostat

Ask Your Own HVAC Question
Customer reply replied 26 days ago
Of course I can but in the instructions it says no jumper wire with this thermostat.

Did you flip the bridge for R/RH

Ask Your Own HVAC Question
Customer reply replied 26 days ago
How do you flip the bridge?

Just put jumper

\

Ask Your Own HVAC Question
Customer reply replied 26 days ago
What do you mean ,just put jumper.

Can you put that jumper from old thermostat on new thermostat... NOW!!!

Ask Your Own HVAC Question
Customer reply replied 26 days ago
I can but I was concerned about the instructions saying no Jumper wire on this thermostat, If it doesn’t wreck any thing I will put jumper in.

You cant damage it doing jumper

Ask Your Own HVAC Question
Customer reply replied 26 days ago
Thank you we will do the jumper then.

Always Shut power to furnace while doing thermostat wiring

Ask Your Own HVAC Question

Now, Power up furnace and try new thermostat

Ask Your Own HVAC Question
Customer reply replied 26 days ago
We can’t get the two wires in the same hole. That is the jumper wire and the red wire
Customer reply replied 26 days ago
The furnace is working

Good Job!!

I noticed question is still open

Please Don't forget to rate the 5 star rating AT THE TOP OF PAGE if we are done. this will credit me for assisting you.

Best regards

Gaztech

Gaztech
Gaztech, HVAC Technician
Category: HVAC
Satisfied Customers: 670
Experience: Owner at Gaztech
Verified
Gaztech and 87 other HVAC Specialists are ready to help you
Ask your own question now
Ask Gaztech Your Own Question
Gaztech
Gaztech
Gaztech, HVAC Technician
Category: HVAC
Satisfied Customers: 670
670 Satisfied Customers
Experience: Owner at Gaztech

Gaztech is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

You did one super job of explaining to me everything there is to know about this fridge. I'm looking forward to asking you questions in the future.

JimmyBagley, IA

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

< Previous | Next >

Meet the Experts:

Phil

Phil

Mechanical Engineer

6,938 satisfied customers

Retired HVAC/ Electrical & Boiler contractor. Industrial

Rick Mather

Rick Mather

HVAC Technician

3,133 satisfied customers

35 years experience, HVAC

Matthew

Matthew

HVAC Technician

2,014 satisfied customers

14 years experience in the HVAC field of service, installation, Manual J & D calculations

Kenton Guidry

Kenton Guidry

HVAC Technician

963 satisfied customers

12 years install/service experience.

Brian HVAC Guy

Brian HVAC Guy

HVAC Technician

953 satisfied customers

I have been an HVAC/R mechanic/technician for 30+ years.

Rick Ridley

Rick Ridley

UK Heating Engineer

871 satisfied customers

Retired But have had 30 years on the tools, Ex CORGI

Tom

Tom

HVAC Technician

770 satisfied customers

16+yrs HVAC/R service. Residential Commerical Industrial

< Previous | Next >

Related HVAC Questions
Well Ive got an issue with thermostat wiring, specific to
specific to thermostat or wiring, the system worked perfectly with the last thermostat its a new honeywell wifi thermostat … read more
BillyHvac
BillyHvac
Journeyman HVAC Tech
22,917 satisfied customers
Need help with wiring question on furnace, it electrical,
need help with wiring question on furnace JA: Did you check the furnace's filters? Customer: it electrical JA: Do you plan on doing the work yourself? Customer: yes JA: Anything else we should know to… read more
Airheatman
Airheatman
Heating & Air Conditioning Contractor
6 years college
1,836 satisfied customers
I have a furnace that wont run, i have done some
I have a furnace that wont run, i have done some troubleshooting and had a repairman out, but it is still not running. was hoping for some help diagnosing the issue. … read more
Regan Land
Regan Land
General Manager
Vocational, Technical or Trade Scho
508 satisfied customers
I have a Regency ultimate u39 freestanding propane fireplace
i have a Regency ultimate u39 freestanding propane fireplace about 4 years old we do not use power on it except for the fan once in awhile. But it keeps turning off on its own and the inside aswell as… read more
Bill Wills
Bill Wills
0 satisfied customers
What are the specs for a GE compressor 21CT50HK1A? FIRST
what are the specs for a GE compressor 21CT50HK1A? … read more
Airheatman
Airheatman
Heating & Air Conditioning Contractor
6 years college
1,836 satisfied customers
I have no heat. Fan is not kicking on when the the flames
I have no heat. Fan is not kicking on when the the flames come on. PAyne furnace flashing code 33 and 13 … read more
Gaztech
Gaztech
HVAC Technician
670 satisfied customers
My honeywell combination fan/limit control has failed model
my honeywell combination fan/limit control has failed model l4064y1177 1 9039k . My supplyer gave me a camstat combination fan/limit control series flats model falts57c-05t-120-a.The honeywell control… read more
Rick the plumber
Rick the plumber
Owner
9,857 satisfied customers
I have an older trane, TDD080C936B0 and got an OPEN HIGH
I have an older trane, TDD080C936B0 and got an OPEN HIGH TEMP LIMIT SW fault. I replaced the sw that is on the front of the unit behind the gas valve. When I cycled power I got the same error code. I … read more
BillyHvac
BillyHvac
Journeyman HVAC Tech
22,917 satisfied customers
The wires thT go to the breaker in from the inside unit are
The wires thT go to the breaker in from the inside unit are overheating so much it is actually mealtime the circuit box. What could be the issue? … read more
Airheatman
Airheatman
Heating & Air Conditioning Contractor
6 years college
1,836 satisfied customers
My steam boiler is discharging steam and water from the
My steam boiler is discharging steam and water from the relief valve. I just changed it to a new one and issue seemed to intensify. Any idea what's going on… read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
6,938 satisfied customers
I have a carrier heat pump and my condenser unit continually
I have a carrier heat pump and my condenser unit continually runs even when the thermostat is turned off. can you help … read more
Regan Land
Regan Land
General Manager
Vocational, Technical or Trade Scho
508 satisfied customers
I have a Nordyne/Intertherm Model E2EB015HB Electric
Second opinion] Hi, I have a Nordyne/Intertherm Model E2EB015HB Electric Furnace. I've talk to another expert and had an HVAC come look at it and have had no luck, I'm running out of options. The orig… read more
Regan Land
Regan Land
General Manager
Vocational, Technical or Trade Scho
508 satisfied customers
What do you charge for a furnace question. Beyond the $
the furnace is only a couple of years old. the purge fan comes on, the ignitor comes on and then the unit just shuts off. Just started doing this today… read more
Regan Land
Regan Land
General Manager
Vocational, Technical or Trade Scho
508 satisfied customers
Honey well chromotherm 111 blank screen have checked all
honey well chromotherm 111 blank screen have checked all breakers changed batteries still blank… read more
Regan Land
Regan Land
General Manager
Vocational, Technical or Trade Scho
508 satisfied customers
I have a small propane furnace at my Camp and just lately on
I have a small propane furnace at my Camp and just lately on the coldest nites it goes off … read more
Rick the plumber
Rick the plumber
Owner
9,857 satisfied customers
My thermostat keeps clicking on and off. Hoping just the
my thermostat keeps clicking on and off JA: Just to clarify, do you think this is a larger HVAC problem, or something specific to the thermostat? Customer: hoping just the thermostat JA: Do you plan o… read more
Rick the plumber
Rick the plumber
Owner
9,857 satisfied customers
No heat. Malfunction alert. Set at 70. Electronic air
Hi JA: Hello. How can I help? Customer: My name is walter JA: I'll do all I can to help. How long have you been dealing with this? Customer: No heat. Malfunction alert JA: Did you double-check the the… read more
Rick the plumber
Rick the plumber
Owner
9,857 satisfied customers
I live in an apartment and change the thermostat, changed it
I live in an apartment and change the thermostat, changed it back and no voltage at thermostat, tested with meter … read more
Gaztech
Gaztech
HVAC Technician
670 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x