HVAC

Have HVAC Questions? Ask an HVAC Expert for Answers

Ask an Expert,
Get an Answer ASAP!

HVAC
This answer was rated:

My Carrier 58MCB140-20 is producing no heat. The blower goes

My Carrier 58MCB140-20 is producing...
My Carrier 58MCB140-20 is producing no heat. The blower goes on for just a few minutes.
JA: Did you double-check the thermostat's settings? And what about the filters?
Customer: I replaced the filter 10 days ago, and I've reprogrammed the thermostat. It had been set to "hold."
JA: Do you plan on doing the work yourself?
Customer: No, but it's late. I may need to call someone tomorrow. I don't see a pilot light--should I?
JA: Anything else we should know to help you best?
Customer: I don't see a pilot light. Should I?
Show More
Show Less
Ask Your Own HVAC Question
Answered in 1 minute by:
10/24/2017
airheatman
airheatman, HVAC Technician
Category: HVAC
Satisfied Customers: 8,502
Experience: Furnace, A/C and heat pump specialist.
Verified

There is no pilot.It lights electronically. Go to furnace an jump the Rand w on furnace board and let me know what comes on if anything

Ask Your Own HVAC Question
Customer reply replied 26 days ago
What is the Rand W?
Customer reply replied 26 days ago
I’ve got the R and W wires. How can I “jump” them? The connections are a bit different from your diagram. There is no screw connection.
Customer reply replied 26 days ago
The wires just plug in...

Do you have a pic you can attach? You can use needle nose pliers to jump

Ask Your Own HVAC Question

That is your zone control.Look in furnace you gave me model on

Ask Your Own HVAC Question

Bottom panel of furnace you will see the board I sent pic of

Ask Your Own HVAC Question

One more panel

Ask Your Own HVAC Question

Yep jump R to W and hold door button in to see if furnace will come on

Ask Your Own HVAC Question
Customer reply replied 26 days ago
That turned the blower on. But just until I let go of the door button.

Keep button in.Allow blower to stop.The see if inducer fan starts and furnace fires.Keep button in

Ask Your Own HVAC Question
Customer reply replied 26 days ago
Furnace fired. I’m still holding door button in.

OK we have now determined problem is nt with furnace.It is with thermostat or that zone panel you shoed me.Do you have a multi meter for testing voltage?

Ask Your Own HVAC Question
Customer reply replied 26 days ago
No.Could it be the programming of the thermostat?

Yes. Lets close up furnace and go to thermostat and do same.Jump R to W

Ask Your Own HVAC Question
Customer reply replied 26 days ago
Blower was on for a few minutes, now off. I’m at the thermostat

Jump R and W

Ask Your Own HVAC Question

Yes remove front to expose wires

Ask Your Own HVAC Question

Did you remove cover>No pic

Ask Your Own HVAC Question

OK tis is a two wire so no W here. e would need a meter to troubleshoot to see if we have 24 at the red and blue R and C at that zone cotroller.

you can get an inexpensive one at Walmart for about 15 bucks if you would like to troubleshoot and I would be happy to guide you.

http://www.walmart.com/ip/Innova-3300-Equus-3300-Hands-free-Digital-Multimeter/14644665

Otherwise from ere you will need to get a tech on site

Ask Your Own HVAC Question
Customer reply replied 26 days ago
Okay. I’ll get one tomorrow, and I’ll get back in touch.At least I now know that it’s a thermostat issue. Thanks.
Customer reply replied 26 days ago
Check between R and C—on which panel? The thermostat control has no R and C wires.Between the R and C wires on the Zone Control, or on the furnace?
Customer reply replied 26 days ago
Got it. Thanks!

Thanks for letting me work with you

Ask Your Own HVAC Question
Ask airheatman Your Own Question
airheatman
airheatman
airheatman, HVAC Technician
Category: HVAC
Satisfied Customers: 8,502
8,502 Satisfied Customers
Experience: Furnace, A/C and heat pump specialist.

airheatman 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

6,730 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 carrier thermostat control 's display just went blank. I
My carrier thermostat control 's display just went blank … read more
HVAC Guru
HVAC Guru
Service Technician
Associate Degree
682 satisfied customers
I have a Carrier furnace from the 80s. In which the blower
in which the blower won't turn off. but the heat does turn on/off depending on the thermostat control … read more
Billy
Billy
Journeyman Service Technician
State Licensed Mechanical Contractor
9,330 satisfied customers
Gas boiler thermostat controles circulating pump hot water
gas boiler thermostat controles circulating pump hot water remains hot and is distributed by convection, how correct … read more
Rick the plumber
Rick the plumber
Owner
9,857 satisfied customers
How can I tell I my York furnace control board is the cause
How can I tell I my York furnace control board is the cause of the furnace not completing the heat cycle. It shuts down and give me the pressure sensor/switch code but two tech's have been out and ver… read more
Billy
Billy
Journeyman Service Technician
State Licensed Mechanical Contractor
9,330 satisfied customers
Trying to identify thermostat wires from an old Carrier
Trying to identify thermostat wires from an old Carrier Comfort Zone to review options for upgrading the thermostat. … read more
airheatman
airheatman
HVAC Technician
8,502 satisfied customers
I have a 20 year old carrier gas hot air furnace. For the
Hi, I have a 20 year old carrier gas hot air furnace. For the last three years have had the occasional issue with the furnace not coming on. I look at the unit for obvious things like lose wires, etc.… read more
HVAC Guru
HVAC Guru
Service Technician
Associate Degree
682 satisfied customers
I have a -Rodgers model 1F97-371 thermostat controller. How
I have a White -Rodgers model 1F97-371 thermostat controller. How do I get it out of the lock mode?… read more
Rick Mather
Rick Mather
HVAC Technician
Vocational, Technical or Trade Scho
3,133 satisfied customers
We have a Carrier A/C with Carrier TP-PRH01 thermostat. Set
We have a Carrier A/C with Carrier TP-PRH01 thermostat. Set on hold, auto, cooling.75 dgr. A/C will run for a while and go dark.Cooling stops. eventually it will light up and cooling will begin and wi… read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
4,135 satisfied customers
Is there a zigbee thermostat controller for a gree ptac? I'm
is there a zigbee thermostat controller for a gree ptac? … read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
4,135 satisfied customers
Where is the fuse in my hvac unit. The thermostat control
Yes. The thermostat control shorted out. I suspect a blown fuse.… read more
Rick the plumber
Rick the plumber
Owner
9,857 satisfied customers
I HAVE A CARRIER HVAC WITH A SYSTXCCUIDO1B THERMOSTAT THATH
I HAVE A CARRIER HVAC WITH A SYSTXCCUIDO1B THERMOSTAT THATH NEEDS TO BE REPLACED. DO YOU RECOMMEMD A ONLINE PART. … read more
Regan Land
Regan Land
General Manager
Vocational, Technical or Trade Scho
508 satisfied customers
Is there a battery on my carrier infinity thermostat? The
Is there a battery on my carrier infinity thermostat? … read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
4,135 satisfied customers
This is the same guy with the Goodman furnace control board
Hi, this is the same guy with the Goodman furnace control board / transformer. My plumber said what caused the board to fail was a short in the blower motor from water from AC unit backing up into blo… read more
Billy
Billy
Journeyman Service Technician
State Licensed Mechanical Contractor
9,330 satisfied customers
What is the best attic exsaust fan thermostat controlled for
What is the best attic exsaust fan thermostat controlled for an 1800 sf house? … read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
6,730 satisfied customers
I have a Goodman GMNTE120-5 It has a furnace/control board
I have a Goodman GMNTE120-5 It has a furnace/control board with this part number B1809925two of the wires have come off two connectors, and the wires are the same color - trying to determine if it mat… read more
Billy
Billy
Journeyman Service Technician
State Licensed Mechanical Contractor
9,330 satisfied customers
I recently replaced my furnace control board. The furnace is
I recently replaced my furnace control board. The furnace is a Lennox G40-OUH and the control board was a White Rodgers 50-A65-121-07. The only replacement was a White Rodgers 50A65-843 Universal Boar… read more
Billy
Billy
Journeyman Service Technician
State Licensed Mechanical Contractor
9,330 satisfied customers
I have an amana furnace control board with an led flashing 3
I have an amana furnace control board with an led flashing 3 times … read more
Rick the plumber
Rick the plumber
Owner
9,857 satisfied customers
I need help with my -Rodgers furnace control board 50e47-060
I need help with my White-Rodgers furnace control board 50e47-060 on a Trane furnace. It has a blinking red light. On the unit it says " steady red light- replace control, blinking red light-referred … read more
type2technician
type2technician
253 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