HVAC

Have HVAC Questions? Ask an HVAC Expert for Answers

Ask an Expert,
Get an Answer ASAP!

HVAC
This answer was rated:

I have a Trane Taystat 500 thermostat that Im replacing with

I have a Trane Taystat...
I have a Trane Taystat 500 thermostat that I'm replacing with an Insteaon 2441th thermostat. How does the wiring match up?

For the Insteon I got:
24V Com - 24VAC Common
24RH - 24VAC Return
W1 - Heat Stage 1
W2 - Heat Stage 2
G - Fan
Y1 - AC Compressor Stage 1
Y2 - AC Compressor Sage 2

The Trane does not have as good of labeling. Along the top row it has (left to right:
R
R
∩ - Intersection

Along the bottom row it has (left to right)
F - not connected
Y
X2
W1
G
Show More
Show Less
Ask Your Own HVAC Question
Answered in 21 minutes by:
10/20/2013
Comfort Specialist
Comfort Specialist, HVAC Technician
Category: HVAC
Satisfied Customers: 1,368
Experience: Master Lic. holder for HVAC & Gas, Contractor, Estimator, Designer, Air Balance Certified, LG Master Commissioner, UNC Cert. holder for Industrial Ventilation
Verified

Wvfan79 :

Hello there! I'm Norman but you can call me Norm. Let's see what I can do to get you some answers today. I'm ready to get started whenever you are.

Wvfan79 :

Hope you are doing well today.

Wvfan79 :

I can help you with your cross reference but I've noticed you don't currently have a common wire. Do you have an extra wire in the bundle in the wall?

Customer:

I'll double check that right now.

Wvfan79 :

ok

Customer:

Yes, i found one other wire, that is disconnected

Wvfan79 :

Ok, here's what we need to do first.

Wvfan79 :

We need to go to the furnace and find this spare wire up there. Then we need to strip it back and connect it to the C terminal on the furnace that way we have a common wire for the new thermostat. If you have trouble locating it let me know. Please turn the main power off first before trying to change any wiring.

Customer:

I cannot locate the C terminal on the furnace wiring circuit board. It has B, W3, W2, W1, G, Y Lo, Y, O, BK, R, T.

Wvfan79 :

Does the B have a wire already on it going to the outdoor unit?

Customer:

Yes, it has two blue wires connected. One going to the thermostat, the other outside

Wvfan79 :

Where does this wire go on the old thermostat?

Wvfan79 :

B terminal?

Customer:

The second R on the top

Wvfan79 :

Oh wow. Okay. So are the two R's on your thermostat jumped together?

Customer:

It does look something like that the first R is connected to the red wire, which corresponds to the R on the furnace

Wvfan79 :

Ok we need to make sure this wire that is connected to B at the furnace is connected to the 24v COM on the new thermostat.

Wvfan79 :

Note the color.

Wvfan79 :

I will then provide you the other cross references to continue.

Wvfan79 :

Be sure power is off to the system before you change over the wiring.

Wvfan79 :

Seems like you already have the Common wire we needed. Sorry to send you searching.

Wvfan79 :

Ok, the first (red) R needs to go to new 24vR

Wvfan79 :

The one you had on B goes to new 24COM

Wvfan79 :

The old F will be capped off.

Wvfan79 :

The old Y will go to new Y1

Wvfan79 :

The old x2 is not used.

Wvfan79 :

The old w1 goes to new W1

Wvfan79 :

The old G goes to the new G.

Wvfan79 :

The old X2 terminal shouldn't have had anything on it anyways.

Customer:

The old X2 is currently connected to W2 on the furnace.

Wvfan79 :

ahhh. So connect this to the W2 on the new thermostat.

Customer:

Thank you so much. I'm wiring now.

Wvfan79 :

No problem at all.

Customer:

What should i do with the wire that's connected to O on the furnace. I said it looked like the upside-down U (intersection), but now I can see the bottom part of the O on the old thermostat was worn off. The new thermostat does not have an O

Wvfan79 :

Ok, one sec. Does your outdoor unit run when you're heating and cooling?

Wvfan79 :

You kept saying Furnace and you're wiring coincided with a furnace. What you're saying now sounds like you have a electric heat pump.

Customer:

Yes, sorry; it is an electric heat pump

Wvfan79 :

Darn. This thermostat is a 2heat/2cool conventional model. Not meant for heat pumps.

Wvfan79 :

Sorry I didn't catch that until right now but didn't see anything about an O terminal in your description.

Customer:

Ah... so then I'm going to have to take it back and get a different model then?

Wvfan79 :

Yes you need the heat pump model.

Wvfan79 :

Multi-stage heat pump model I should say.

Wvfan79 :

The wiring is pretty much the same except the old O goes to the new O or O/B and the old W2 will go to the new E terminal. The old W1 will go to the new AUX. All the rest should stay the same.

Wvfan79 :

Depending on the thermostat you buy, you may need to read the installer setup and change the system type to multi stage heat pump.

Wvfan79 :

I am going to have to step away from the site for awhile and may not be here when you get back. Please reply if you need more help later. If I can't help I'll opt out and let someone else step in and help.

Wvfan79 :

If you get back and all is well with the wiring please remember to rate your experience so the request is finalized.

Wvfan79 :

I'm back online. Keep me in the loop if you can.

Customer:

It looks line Insteon does not have a model for Heat Pump, so I'm going to have to go with a different brand. I'm considering the Venstar T6800

Wvfan79 :

Sounds good. Yes you'll need the multi-stage heat pump one for certain.

Customer:

How would the wiring go for the T6800? I'm confised at the W1/0/B part.
The 6 Wire, 1 Stage Cooling, 2 Stage Heat wiring for the T6800 lists:

R 24VAC Power
C 24V
AC Common
W1/O/B Reversing Valve
Y1 1st Stage Compressor (Cool or Heat)
W2 Aux Heat
G Fan

This is what is currently connected:
Old Thermostat Curcuit board Wire color
24 Com B light blue
24R R Red
W1 W1 White
Y Y Yellow
0 0 Orange
X2 W2 Black
G G Green

Customer:

Sorry, I accentally changed the currently connected one. It's really:This is what is currently connected:
Old Thermostat Curcuit board Wire color
R B light blue
R R Red
W1 W1 White
Y Y Yellow
0 0 Orange
X2 W2 Black
G G Green

Wvfan79 :

Ok, give me a minute to review and clarify.

Wvfan79 :

Sorry I've had a lot going on here this afternoon. Looking now, sorry for the delay.

Wvfan79 :

The old X2 goes to W2

Wvfan79 :

The old G goes to new G

Wvfan79 :

The old Y1 goes to new Y

Wvfan79 :

The old R Com goes to the C terminal.

Wvfan79 :

The old R red goes to the new R with a jumper to Rc if it has it.

Wvfan79 :

The old O goes to the new O

Wvfan79 :

The old W1 goes to the new AUX

Wvfan79 :

Wait, All of your post confused me. I'm looking and two seperate post.

Wvfan79 :

I'm having all types of chat problems, I'm sorry.

Wvfan79 :

Ok, I have the Venstar wiring pulled up now, this will help.

Wvfan79 :

The old R (red wire) goes to the new R terminal.

Wvfan79 :

The old B (blue wire) goes to the new C terminal.

Wvfan79 :

The old W1 wire will go to the new W2 terminal

Wvfan79 :

The old W2 wire will go to the new W3 terminal

Wvfan79 :

The old O wire will go to the new O/B terminal.

Wvfan79 :

The old Y1 wire will go to the new Y1 terminal.

Wvfan79 :

The old Y2 wire will go to the new Y2 terminal.

Wvfan79 :

The old G wire will go to the new G terminal.

Wvfan79 :

Make sure you follow the installation setup guide and select the multi-stage heating and cooling system.

Customer:

I do not have a Y2 wire, I do have an X2 wire, but it connected to W2 on the heat pump

Wvfan79 :

Crap I'm looking at the old thermostat again.

Wvfan79 :

Man all these different letters are getting to me, must be getting tired, lol. Sorry.

Wvfan79 :

Ok I'm sorry, Here we go.

Wvfan79 :

The old Red R goes to the new R terminal.

Wvfan79 :

The old Rb (blue wire) goes to the new C terminal.

Wvfan79 :

The old O wire goes to the new O/B terminal.

Customer:

lol no problem. I definitely understand.

Wvfan79 :

The old F is not used.

Wvfan79 :

The old Y goes to the new Y1

Wvfan79 :

The old x2 goes to the new W2

Wvfan79 :

Scratch that move x2 to W3

Wvfan79 :

Put the old W1 on new W2

Wvfan79 :

Old G to new G.

Wvfan79 :

Old O to new O/B

Customer:

Alright, this is what I got; does it look right:

Customer:

Old Thermostat Curcuit board Wire color New Thermostat
R B light blue C
R R Red R
W1 W1 White W2
Y Y Yellow Y1
0 0 Orange O/B
X2 W2 Black W3
G G Green G

Wvfan79 :

Yes

Wvfan79 :

Looks great!

Customer:

Thank you so much. That helped a lot!

Wvfan79 :

LOL, no problem.

Wvfan79 :

If you get her fired up and running please let me know.

Customer:

will do

Comfort Specialist
Comfort Specialist, HVAC Technician
Category: HVAC
Satisfied Customers: 1,368
Experience: Master Lic. holder for HVAC & Gas, Contractor, Estimator, Designer, Air Balance Certified, LG Master Commissioner, UNC Cert. holder for Industrial Ventilation
Verified
Comfort Specialist and 87 other HVAC Specialists are ready to help you
Ask your own question now
Customer reply replied 4 years ago

The wiring you listed worked perfectly. Thank you. The only remaining problem I have is the fan won't turn on by itself... but it was doing that with the old thermostat as well. The fan does turn on with cooling and heating. Could that be the model of heat pump?

Sorry for the slow response. I've been out of town for a few days.

To address the fan issue you would need to go to the indoor unit and check the connection to the circuit board. Make sure that Green (G) wire from the thermostat G terminal is connected at the control board. When you switch the fan switch to ON 24v is send down the green wire to the G terminal which triggers the fan relay. Check that out, if connected you may want to try swapping in another wire in case that one is broken somewhere.

So glad to hear you're up and going.
Ask Your Own HVAC Question
Customer reply replied 4 years ago

Yes, the wire is good... and actually after I took off the cover and let the Fan run, I realized it did turn on, just at a really low setting. I looked around and couldn't find any dip switches for changing the airflow for the fan by itself. I did see a dip switch for "airflow adjustment", but it doesn't seem to affect the fan when it's on by itself. There is also a switch for airflow with aux heat, but that's also unrelated. I'm beginning to wonder if it's the design of the heat pump to not allow the fan to run at high speed without the cooling/heating.


 


I was trying to send a picture, but I can't seem to get a good picture of it... too dark and flash makes it to bright. The model number is twe040e130a0, if that helps though.


 

I would need the model number in order to be able to help with airflow settings. Also, you may want to open a new question as this one may time out as it gets older.
Ask Your Own HVAC Question
Ask Comfort Specialist Your Own Question
Comfort Specialist
Comfort Specialist
Comfort Specialist, HVAC Technician
Category: HVAC
Satisfied Customers: 1,368
1,368 Satisfied Customers
Experience: Master Lic. holder for HVAC & Gas, Contractor, Estimator, Designer, Air Balance Certified, LG Master Commissioner, UNC Cert. holder for Industrial Ventilation

Comfort Specialist 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
My boiler is running low on water every day or so. I see a
My boiler is running low on water every day or so. I see a good deal of steam escaping around the water-level indicator (a vertical glass tube), and I wonder if I have the valves adjusted wrong. … read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
6,938 satisfied customers
I have a Lennox lf24-150 that is giving me a 4 flash. It
Hi I have a Lennox lf24-150 that is giving me a 4 flash. It runs perfectly for 2-3 cycles then starts fires but the fan doesn't turn on. Then I get the 4 flash since it is overheating without the fan … read more
Airheatman
Airheatman
Heating & Air Conditioning Contractor
6 years college
1,836 satisfied customers
Sure. I need to reset my Trane Xe90 Furnace. It's on
Sure. I need to reset my Trane Xe90 Furnace. It's on external lockout after failing to light. Happened after I tried switching to a new thermostat. … read more
HVAC Guru
HVAC Guru
Service Technician
Associate Degree
682 satisfied customers
Have a Ac/Heater unit Model RGPS-10EBRJR made 03/2010, the
Have a Ac/Heater unit Model RGPS-10EBRJR made 03/2010, the heater will come on & light, as soon as the blower comes on the flame will go out. it will do this over & over, I can turn the heater off & l… read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
6,938 satisfied customers
It doesn't seem like my newly installed Aprilaire humidifier
It doesn't seem like my newly installed Aprilaire humidifier is working. Shouldn't I hear water draining out the condensation drain? … read more
Gaztech
Gaztech
Technician
Vocational, Technical or Trade School
1,142 satisfied customers
My spa heater isn't working properly and I don't know how to
Hi my spa heater isn't working properly and I don't know how to interpret the codes … read more
David Bowden
David Bowden
Owner
466 satisfied customers
We use Flanders brand Pre Pleated 40 LPD filters for our
We use Flanders brand Pre Pleated 40 LPD filters for our AC/CH unit. It is 16x25x2 in size. We cannot find the MERV rating of this particular filter. Can you tell us? My wife's allergist urges a filte… read more
Billy
Billy
Journeyman Service Technician
State Licensed Mechanical Contractor
9,330 satisfied customers
I have trane XV 90 furnace and it is flashing a pressure
I have trane XV 90 furnace and it is flashing a pressure switch fault … read more
niro9800
niro9800
0 satisfied customers
I have an Armstrong Air gas furnace which is about 7 years
I have an Armstrong Air gas furnace which is about 7 years old. Recently it hasn't been working right. The LED on the control board has been flashing 3 times showing the pressure switch is open with t… read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
6,938 satisfied customers
I just finished installing a new ruud heater in my home and
I just finished installing a new ruud heater in my home and I'm getting a code 59 that means its sensing water and the heater won't run. Art … read more
Certified HVAC Service Technician
Certified HVAC Service Technician
Welder
Vocational, Technical or Trade School
2 satisfied customers
Having issues wiring a new Honeywell rth9585 with old
Having issues wiring a new Honeywell rth9585 with old wiring. Old thermostat is trance xt302a which used ZY1, R, G, W1, W2 and B wires. … read more
Michael Ferryman
Michael Ferryman
86 satisfied customers
Thermostat called for heat, igniter was no for about 5
Thermostat called for heat, igniter was no for about 5 seconds, then the blower kicked in and at the same time, it turned off the igniter. … read more
HvacmanSean
HvacmanSean
Owner
HVAC
228 satisfied customers
I have a Rodgers 50A55-288-05. Furnace has been working but
I have a white Rodgers 50A55-288-05. Furnace has been working but no on the control board I am getting 3 flashing lights and ignition switch does not heat up. Exhaust fan tuns on but burners and ignit… read more
HVAC Guru
HVAC Guru
Service Technician
Associate Degree
682 satisfied customers
We have a comfort star plus a/c unit and received an error
we have a comfort star plus a/c unit and received an error code of H1 on the … read more
Airheatman
Airheatman
Heating & Air Conditioning Contractor
6 years college
1,836 satisfied customers
Our furnace fan seems to be running continuously in spite of
our furnace fan seems to be running continuously in spite of the fact that the inside temperature is as shown on the thermostat setting … read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
6,938 satisfied customers
I have a outdoor boiler. I use the honeywell TRIAC line volt
I have a outdoor wood boiler. I use the honeywell TRIAC line volt thermostat. The one I had worked well on manual mode. If went bad today and I replaced with a new one, same as the old. The fan will t… read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
6,938 satisfied customers
I have a 30 year old Plus 90 furnace. Recently I noticed a
I have a 30 year old Bryant Plus 90 furnace. Recently I noticed a humming noise when the blower starts up, and is gone when at full speed. In other forums (and this one), the capacitor has been identi… read more
Billy
Billy
Journeyman Service Technician
State Licensed Mechanical Contractor
9,330 satisfied customers
Will running my fan constant help heat a tri level home with
will running my fan constant help heat a tri level home with a arcoaire N8MXL furnace installed in 2015. … read more
Michael Ferryman
Michael Ferryman
86 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