HVAC

Have HVAC questions? Ask an HVAC Expert for answers

Connect one-on-one with {0} who will answer your question

Related HVAC Questions
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
7,791 satisfied customers
I have Weil McLain CGI 4 series 2 boiler that I am having trouble
I have Weil McLain CGI 4 series 2 boiler that I am having trouble keeping and getting pilot to light. I replaced the pilot assembly, module, and 24v transformer. The pilot will light the gas valve wil… read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
7,791 satisfied customers
Tapping on the fan limit switch worked once but now the blower
Tapping on the fan limit switch worked once but now the blower comes on without the burners coming on, pilot stays lit but burners never ignite. I replaced the fan limit switch but didn't help.… read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
7,791 satisfied customers
I have a trane xb furnace 2006. It wont fire the heat just
I have a trane xb furnace 2006. It won't fire the heat just runs the fan. Red lighting blinks 4 times… read more
BillyHvac
BillyHvac
Journeyman HVAC Tech
23,351 satisfied customers
I have a Coleman DGAA056BDTB. I have ordered a new limit switch
I have a Coleman DGAA056BDTB. I have ordered a new limit switch and hope to install it myself. Do you have a tech sheet on how to change?… read more
BillyHvac
BillyHvac
Journeyman HVAC Tech
23,351 satisfied customers
The trouble shooting indicates the Primary or Secondary Limit
The trouble shooting indicates the Primary or Secondary Limit Switch is open. I cannot find where these switches are. The Model number is: 80MGF-7. Is there somewhere I can go to show me where these a… read more
BillyHvac
BillyHvac
Journeyman HVAC Tech
23,351 satisfied customers
my bored lite three times then stops then lite three then stops
my bored lite three times then stops then lite three then stops where is the limit switch located and what dose it look like… read more
Kenton Guidry
Kenton Guidry
HVAC Technician
Vocational, Technical or Trade Scho
963 satisfied customers
replaced mother board replaced limit switch double checked
replaced mother board replaced limit switch double checked all wires board still flashes once cant get blower to stop running and still no heat can anyone tell me whats next sincerly fustrated and col… read more
BillyHvac
BillyHvac
Journeyman HVAC Tech
23,351 satisfied customers
I have a Lennox G2603-75-3 that the blower is running constantly
I have a Lennox G2603-75-3 that the blower is running constantly but will not ignite. The Diag lights show that the Primary/ Secondary Limit Switch is open. How do I find the limit switch so I can res… read more
BillyHvac
BillyHvac
Journeyman HVAC Tech
23,351 satisfied customers
I have a York Diamond 80 furnace and it lrd lights blink 4
I have a York Diamond 80 furnace and it lrd lights blink 4 times which tells me the limit switch is open. Can I reset it myself and if so where is it located at. I have no heat at this time.… read more
Tim H.
Tim H.
Lead building engineer
Vocational, Technical or Trade Scho
3,962 satisfied customers
I have an Intertherm Gas Furnace Model MGHA-056ABFC-01. I
I have an Intertherm Gas Furnace Model MGHA-056ABFC-01. I need the limit switch and the fan switch. The HVAC Tech that came to look at was very rude when I told him all I wanted him to tell me was wha… read more
Rick Mather
Rick Mather
HVAC Technician
Vocational, Technical or Trade Scho
3,133 satisfied customers
I am getting an open high limit switch error from my furnace.
I am getting an open high limit switch error from my furnace. I have cleaned off everything and taken the limit switch out to see if there is a manual reset. I can't find anything to reset the trouble… read more
BillyHvac
BillyHvac
Journeyman HVAC Tech
23,351 satisfied customers
goodman GMT090-4A furnace flame shutting down after 3 min or
goodman GMT090-4A furnace flame shutting down after 3 min or so then starts all over again not heating the house over 69 degrees… read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
5,375 satisfied customers
My Lennox elite series heater does not ignite when turned on.
My Lennox elite series heater does not ignite when turned on. The blower comes on but nothing else happens. It has worked fine until recently The LED lights display as follows: The left one flashes sl… read more
Kenton Guidry
Kenton Guidry
HVAC Technician
Vocational, Technical or Trade Scho
963 satisfied customers
i have rheem furnance, heater force air, model #CVB 100 AD,
i have rheem furnance, heater force air, model #CVB 100 AD, SERIAL #IS RA64EN3D1A8 35, someone ,before ,was working on it ,i believe they may have switch the wires around .....i have 120.GOING TO THE … read more
Douglas
Douglas
Vocational, Technical or Trade Scho
3,087 satisfied customers
I have model #58rav70-12 built in 95 and I think the auxilliary
I have model #58rav70-12 built in 95 and I think the auxilliary limit control may need to be reset. Where is it?… read more
Mark Henley
Mark Henley
HVAC Controls DDC
3,216 satisfied customers
My Coleman furnace is not working. The diagnostic light says
My Coleman furnace is not working. The diagnostic light says limit switch open. I don't know where the limit switch is… read more
BillyHvac
BillyHvac
Journeyman HVAC Tech
23,351 satisfied customers
On a Rheem classic 80 gas furnace with electric ignition where
On a Rheem classic 80 gas furnace with electric ignition where are the trip switches located on the furnace?… read more
Jim Eastwood
Jim Eastwood
Lead service
High School or GED
100 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.

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

7,791 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 >

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