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 Carrier 58cma105 oil furnace. The blower doesnt

I have a Carrier 58cma105...
I have a Carrier 58cma105 oil furnace. The blower doesn't shut off.
Show More
Show Less
Ask Your Own HVAC Question
Answered in 19 minutes by:
11/4/2013
airheatman
airheatman, HVAC Technician
Category: HVAC
Satisfied Customers: 8,518
Experience: Furnace, A/C and heat pump specialist.
Verified
Hello. My name is XXXXX XXXXX I'll do my best to help. Troubleshooting often requires meters and test equipment. Let's get started and see what we can do.
If everything is working normally other than the blower just does not shut down, you have a bad control board. The fan relay is integrated into the control board which tells the blower to run or to shut down.The little black box built onto the board is the fan relay. Often you can gently tap those little black boxes and relay will unstick, bu will ultimately stick again and board will have to be replaced.
Ask Your Own HVAC Question
Customer reply replied 4 years ago

The whole board would need to be replaced? Can you just replace the relay?


 


 

On this particular furnace the relay is built into the board and can not be replaced independently.
Here is a link to the board. The small black boxes you see on the board are the fan relays.
http://www.northamericahvac.com/servlet/the-3962/Honeywell-Fan-Control-Board/Detail
Ask Your Own HVAC Question
Customer reply replied 4 years ago

Just one more thought... I was reading something about how it could be a "limit switch." Any thoughts on that?

That is why I mentioned "If everything else is working normally". If it is an open limit, the burners will not light. Are you having other issues besides just motor staying on?
Ask Your Own HVAC Question
Customer reply replied 4 years ago

Yes, the burners must be lit because the heat does kick on.


 


Thanks for your help. I just wanted to be sure I eliminated everything before replacing the board.

I understand. This is a pretty common issue with these boards. Feel free to follow up and let me know.
airheatman
airheatman, HVAC Technician
Category: HVAC
Satisfied Customers: 8,518
Experience: Furnace, A/C and heat pump specialist.
Verified
airheatman and 87 other HVAC Specialists are ready to help you
Ask your own question now
Ask airheatman Your Own Question
airheatman
airheatman
airheatman, HVAC Technician
Category: HVAC
Satisfied Customers: 8,518
8,518 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 oil furnace keeps shutting off. The red light comes on,
My oil furnace keeps shutting off. The red light comes on, and we have to push the red button to turn it on again. I have half a tank of oil so that is not the issue. This morning, when it shut down, … read more
Rick the plumber
Rick the plumber
Owner
9,857 satisfied customers
I have a gun oil furnace and it keeps shutting down I bleed
I have a miller gun oil furnace and it keeps shutting down I bleed it and usually there is air in the line that I bleed out and it runs ok … read more
Rick the plumber
Rick the plumber
Owner
9,857 satisfied customers
I bought a house that has a Bard FLF085D36F oil furnace it
I bought a house that has a Bard FLF085D36F oil furnace it appears it was ran dry in the late spring, AC works fine, when switched to heat blower fan runs continuous furnace never tries to start up or… read more
Rick the plumber
Rick the plumber
Owner
9,857 satisfied customers
Have an airease ultra 80 oil furnace that I am trying to
have an airease ultra 80 oil furnace that I am trying to restart after not having fuel for a while. reset button is flashing … read more
Billy
Billy
Journeyman Service Technician
State Licensed Mechanical Contractor
9,330 satisfied customers
Ihave a thermoflo oil furnace model OL11=105FDA.It
Ihave a thermoflo oil furnace model OL11=105FDA.It originally had Honeywell R7184B burner control I changed it due to malfunction with Honeywell R7284U. every thing is the same except for the old cont… read more
Rick the plumber
Rick the plumber
Owner
9,857 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
8,518 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
I have an unrented mobile home with an oil furnace that
Hello Pearl, I have an unrented mobile home with an oil furnace that burns kerosene. Every fall (now) for the past three years I try to get the furnace to keep the interior around 50f. Same problem ev… read more
Rick the plumber
Rick the plumber
Owner
9,857 satisfied customers
Just bought a Nest, but it's incompatible with my Carrier
Hi Hi. Just bought a Nest, but it's incompatible with my Carrier Infinity system. what to do? Rewire? Or find a different thermostat? If so, which one? … read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
4,135 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
I have a therma flow aquabooster water heater. oil furnace
I have a therma flow aquabooster water heater. oil furnace guy came and cleaned it but turned down the hot water. we hate it. not hot enough. how can i turn it up/ serial number is ***** … read more
Rick the plumber
Rick the plumber
Owner
9,857 satisfied customers
Olen oil furnace. Oil drip from pump, infinitesimally slow
Olen oil furnace. Oil drip from pump, infinitesimally slow but large accumulation in pan. Can't find origin of drip. Gasket? … read more
Billy
Billy
Journeyman Service Technician
State Licensed Mechanical Contractor
9,330 satisfied customers
I have a Patroit 80 Plus Oil Furnace that is 21 years old.
I have a Patroit 80 Plus Oil Furnace that is 21 years old. The blower motor went and the heating company says it can no longer find the motor and are trying to sell me a new unit. The model number is … read more
Rick the plumber
Rick the plumber
Owner
9,857 satisfied customers
Even, I have an older Raheem unit with an oil furnace. The
I have an older Raheem unit with an oil furnace. The fan is only working if I turn it to on. It does not work on auto. The unit is running outside but it is not creating condensation … read more
Billy
Billy
Journeyman Service Technician
State Licensed Mechanical Contractor
9,330 satisfied customers
I would like to remove a Trianco oil furnace system that I'd
Hi, I would like to remove a Trianco oil furnace system that I'd like to remove for a ranch house built in 1959. The furnace is in the basement. All of the copper pipes are easy to access. There are b… read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
6,730 satisfied customers
I HAVE AN OLDER rHEEM OIL FURNACE MODEL rcba-6089gg24 SERIAL
i HAVE AN OLDER rHEEM OIL FURNACE MODEL rcba-6089gg24 SERIAL m4299. i HAVE HAD TROJUBLE WITH THE FAN STAYING ON WHILE THE FURNace -heat- has stopped. I have had some .ocals out but they are mostly clu… read more
Rick the plumber
Rick the plumber
Owner
9,857 satisfied customers
I have a carrier model 58bma075-12 oil furnace. I replaced
I have a carrier model 58bma075-12 oil furnace. I replaced the beckett model afg oil burner with a new afg burner. When I connect the wiring to the Honeywell st9103a control board the only way I can g… read more
Rick the plumber
Rick the plumber
Owner
9,857 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