HVAC

Have HVAC questions? Ask an HVAC Expert for answers

Ask an Expert,
Get an Answer ASAP!

I replaced the valve on my older furnace and took the wires…

Customer Question
Hi there. I replaced...

Hi there. I replaced the valve on my older furnace and took the wires off my limit switch took a picture of the wiring prior but now can't find it!! Anyway it has 5 terminals three that have juice. I have the fan hooked up but have the two wires from the valve plus the thermostat to hook up. If I number the terminals 1 to 5 left to right hopefully this as t helps. There are serial and model numbers I nieve that I can give you as well.

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

Thanks,

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

Gord

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

Just how to.hook up those three wires thanks.

Submitted: 11 months ago.Category: HVAC
Show More
Show Less
Ask Your Own HVAC Question
Answered in 2 minutes by:
9/14/2017
HVAC Technician: Rick, HVAC Supervisor replied 11 months ago
Rick
Rick, HVAC Supervisor
Category: HVAC
Satisfied Customers: 24,602
Experience: 40+ yrs. experience as a licensed oil & gas technician.
Verified

Welcome to Just Answer, my name is ***** ***** I will do my best to help you with your issue. First I’ll need some more info so I have a more complete picture of your situation. I need a wiring diagram for your unit. It's usually pasted to the back of one of the access panels. Post a clear sharply focused pic here. Click on link below for pic upload instrutions

http://ww2.justanswer.com/help/how-do-i-send-photo-or-file-expert-hl

Ask Your Own HVAC Question
Customer reply replied 11 months ago
If I had a wiring diagram I would have done it by now. I can send a pic of what the terminals look like?
HVAC Technician: Rick, HVAC Supervisor replied 11 months ago

I'm going to open this up to my colleagues so one of them can help. Please don't respond (even to acknowledge this post)until you get a response from us. If you respond first it will only delay your answer.

Ask Your Own HVAC Question
HVAC Technician: Phil, Mechanical Engineer replied 11 months ago
Phil
Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 7,426
Experience: Retired HVAC/ Electrical & Boiler contractor. Industrial
Verified

Hello, send me a photo of the limit switch with the three wire terminal connections that were used on it... then tell me where each of the three spare wires terminates in the furnace.... (blower motor and gas valve etc) we can go from there.

.

Ask Your Own HVAC Question
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a hvac technicianLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask Phil Your Own Question
Phil
Phil
Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 7,426
7,426 Satisfied Customers
Experience: Retired HVAC/ Electrical & Boiler contractor. Industrial

Phil 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

7,426 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

Brian HVAC Guy

Brian HVAC Guy

HVAC Technician

1,024 satisfied customers

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

Kenton Guidry

Kenton Guidry

HVAC Technician

963 satisfied customers

12 years install/service experience.

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
Just put in a honeyell r7284u on a warm air furnace. Its
Just put in a honeyell r7284u on a warm air furnace. Its showing me tt limit opend what does that mean and do I have to install a jumper … read more
Billy
Billy
Journeyman Service Technician
State Licensed Mechanical Contractor
9,330 satisfied customers
I have a Lennox Model G8Q3-90-2 furnace that I want to hook
Customer: Hi Tim I have a Lennox Model G8Q3-90-2 furnace that I want to hook a modern t-stat to. The existing t-stat has a wire for the R and W terminals but I need a wire for the C on the new t-stat.… read more
Airheatman
Airheatman
Heating & Air Conditioning Contractor
6 years college
1,836 satisfied customers
I am putting back an older Honeywell thermostat (the
I am putting back an older Honeywell thermostat (the landlord did not want to keep the wifi enabled one I bought) and reconnected it as before, (I took pictures) with just green white and red wires. B… read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
7,426 satisfied customers
Yes. I just purchased a honeywell WIFI programmable thermostat. My old thermostat ran on
Yes. I just purchased a honeywell WIFI programmable thermostat. My old thermostat ran on batteries. This one states I need the "C" wire (24 VAC common) to power the thermostat. I only have RC,W,Y and … read more
Tim H
Tim H
Lead building engineer
Vocational, Technical or Trade Scho
1,922 satisfied customers
Hi there Mark, I have a Goodman dgs80904bxbc. For the last
Hi there Mark, I have a Goodman dgs80904bxbc. For the last week our furnace has not been working properly. When we took a look there were 4 blinking lights when it runs. On the door of the furnace it … read more
Expert
Expert
have a Bryant/carrier built Model #398aaw036080d plus 90 furnace
have a Bryant/carrier built Model #398aaw036080d plus 90 furnace have been working on for awhile, started with the 3 wire igniter/ pilot light was not sparking tapped on it and then received a spark w… read more
HVAC_Doug
HVAC_Doug
Vocational, Technical or Trade Scho
I have a model no cdhs110 furnace and besides having to replace
I have a model no cdhs110 furnace and besides having to replace the thermocouple numerous times last season it has been a dependable furnace. I purchased and installed myself prob over 20yrs ago. So m… read more
Rick
Rick
HVAC Supervisor
24,602 satisfied customers
billy r7284u no limit on previous controler ran limit to l1
billy r7284u no limit on previous controler ran limit to l1 black furnanc worked but thermostat did not… read more
Billy
Billy
Journeyman Service Technician
State Licensed Mechanical Contractor
9,330 satisfied customers
I have a rheem gas furnace rgbde07nmagr. It stopped lighting
I have a rheem gas furnace rgbde07nmagr. It stopped lighting so I replaced the ignitor it worked finetwice, nowit will not light. I did notice that the 2 times it lit the flame was yellow. Thanks for … read more
Matthew
Matthew
HVAC Technician
Bachelor's Degree
2,014 satisfied customers
Rheem Criterion furnace pilot light is burning fan is blowing
Rheem Criterion furnace pilot light is burning fan is blowing (vents in house are blowing air) thermostat set on HEAT, with fan ON temp in house 5+ degrees cooler than heat setting at thermostat fan h… read more
Matthew
Matthew
HVAC Technician
Bachelor's Degree
2,014 satisfied customers
I would like to know the proper way of wiring up a White Rodgers
I would like to know the proper way of wiring up a White Rodgers 50E47-843 Furnace Control Box. I had a WR 50E47-140 and it was bad. I wired up the 843 but it isn't working. Here is how I had it wired… read more
Regan Land
Regan Land
General Manager
Vocational, Technical or Trade Scho
508 satisfied customers
I,ve got a Lennox G60 furnace with Interrmitanrt pilot and
I,ve got a Lennox G60 furnace with Interrmitanrt pilot and Penn control. The pilot coes on lights, then burner lights but stays on shortly, then recycles. I cleaned somes residue off the flame sensor … read more
Regan Land
Regan Land
General Manager
Vocational, Technical or Trade Scho
508 satisfied customers
I recently installed a new Bryant BW9 boiler into my house,
I recently installed a new Bryant BW9 boiler into my house, replacing an old unit. The system has three Honeywell zone valves with the screws on the top. On the old boiler, the thermostat connected to… read more
Rick Mather
Rick Mather
HVAC Technician
Vocational, Technical or Trade Scho
3,133 satisfied customers
Trying to hook up new thermostat. I have a older oil furnace
Trying to hook up new thermostat. I have a older oil furnace with 2 wire hookup labeled T-T at oil blower hookup, replaceing with one that handles a fan setting, 4 wire. This happens to support air co… read more
Rick
Rick
HVAC Supervisor
24,602 satisfied customers
I have a furnace that was installed in 1986 it has no name
I have a furnace that was installed in 1986 it has no name or model number. I replaced the existing thermostat with a new one but wanted to run the fan only. Since I had two wire running up to the the… read more
Tim H
Tim H
Lead building engineer
Vocational, Technical or Trade Scho
1,922 satisfied customers
The tstat wires on my inside unit have been undone i need to
The tstat wires on my inside unit have been undone i need to know where to hook each wire so my unit will work… read more
Regan Land
Regan Land
General Manager
Vocational, Technical or Trade Scho
508 satisfied customers
My Old Westinghouse thermocouple gas valve had three terminals
My Old Westinghouse thermocouple gas valve had three terminals my new universal has two, I was told it will work and the third turminal is a dummy terminal on the old one. I have tried every combinati… read more
DuWayne
DuWayne
Sales/ Service
Vocational, Technical or Trade Scho
126 satisfied customers
I have installed a kerr scotty side by side wood furnace and
I have installed a kerr scotty side by side wood furnace and a kerr oil gemini furnace , both forced air, I can't seem to fiquire out the wiring skematics between the two thermostates on each furnace.… read more
Bill P.
Bill P.
Installer/ Troubleshooter/Technician
286 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