HVAC

Have HVAC questions? Ask an HVAC Expert for answers

Ask an Expert,
Get an Answer ASAP!

Thermostat won't turn on in auto setting and when I turn fan…

Customer Question
Thermostat won't turn on...

Thermostat won't turn on in auto setting and when I turn fan on it only blows air no heat

Contractor's Assistant: Did you double-check the thermostat's settings? And what about the filters?

Yes,filter is good

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

I rechecked wiring positive its good

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

What other reason it won't blow warm air

Submitted: 8 months ago.Category: HVAC
Show More
Show Less
Ask Your Own HVAC Question
Answered in 3 minutes by:
11/10/2017
HVAC Technician: Rick, HVAC Supervisor replied 8 months ago
Rick
Rick, HVAC Supervisor
Category: HVAC
Satisfied Customers: 24,416
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. If my initial response doesn’t answer your question then let me know and we can continue our conversation.

Sounds like a furnace malfunction. If you want to trouble shoot this I'll need the brand and model number of your unit.

Ask Your Own HVAC Question
Customer reply replied 8 months ago
Furnace was working fine before installing new thermostat
HVAC Technician: Rick, HVAC Supervisor replied 8 months ago

Did you turn the power off when you changed the thermostat?

Ask Your Own HVAC Question
HVAC Technician: Rick, HVAC Supervisor replied 8 months ago

If you wired the thermostat right then it's a furnace problem

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

1,019 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
My cooling won't turn on. The heat works, but I wanted to
My cooling won't turn on. The heat works, but I wanted to switch it to air tonight because we had an unseasonably warm day here, but it won't turn on … read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
5,349 satisfied customers
I'm getting a 32 error code on model 312AA furnace, which
I'm getting a 32 error code on Bryant model 312AA furnace, which understand is low-heat pressure switch problem - not sure how to validate and if something i can fix? fan works but no heat. … read more
Billy
Billy
Journeyman Service Technician
State Licensed Mechanical Contractor
9,330 satisfied customers
My furnace (model GM881205DNBA) is only blowing cold air and
Hi, My furnace (model GM881205DNBA) is only blowing cold air and it seems like there is no heating going on. I think maybe the flame /ignition has gone out. How do I restart ?… read more
Rick
Rick
HVAC Supervisor
24,416 satisfied customers
i have an intertherm system (i keep seeing intertherm and nordyne
i have an intertherm system (i keep seeing intertherm and nordyne interchanged)model u-32 serial ********** earlier, my wife said she smelled something coming from the air conditioner. it smelled like… read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
7,426 satisfied customers
We have the Vision PRO TH8000 Series from Honeywell. Our heat
We have the Vision PRO TH8000 Series from Honeywell. Our heat is not working downstairs and when I turn it on it initially says Heat on, then switches to Aux heat and no heat is coming on.… read more
Douglas
Douglas
Vocational, Technical or Trade Scho
3,087 satisfied customers
I unplugged the drain on my HVAC system at the air handler
I unplugged the drain on my HVAC system at the air handler while the system was running and it turned off at this time. I then went out and vacumed out the drain from the outside because I had a clog.… read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
7,426 satisfied customers
I have a Goodman heat pump that is only about 2.5 years old,
I have a Goodman heat pump that is only about 2.5 years old, package unit on roof of a Washington DC row house. #GPH1336H21 AE serial #0904601905 last winter was working fine and this summer it worked… read more
Airheatman
Airheatman
Heating & Air Conditioning Contractor
6 years college
1,836 satisfied customers
Good Morning...My question is...Why doesnt the heat element,
Good Morning...My question is...Why doesn't the heat element, fan, outside unit shut down when the thermostatic setting is reached. What happens is...the units keep running...blowing cooler air withou… read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
5,349 satisfied customers
I have an older honeywell thermostat and I went to turn on
I have an older honeywell thermostat and I went to turn on the air conditioning and I am not getting cold air.I turned the heat down to its lowest setting and switched it to cool and pushed the cold l… read more
Billy
Billy
Journeyman Service Technician
State Licensed Mechanical Contractor
9,330 satisfied customers
Lennox Elite Gas Furnace starts inducer fan motor for 5 to
Lennox Elite Gas Furnace starts inducer fan motor for 5 to 10 seconds then stops. Green light on igniter control lights after inducer fan motor starts goes out when it stops. If fan switch on thermost… read more
Tim H.
Tim H.
Lead building engineer
Vocational, Technical or Trade Scho
3,962 satisfied customers
red light flashes 3 times cover says pressure switch error.
red light flashes 3 times cover says pressure switch error. if i switch t-stat to on the heat will turn on but not if it is on auto what could problem be… read more
Douglas
Douglas
Vocational, Technical or Trade Scho
3,087 satisfied customers
Why my furnace blower only works in ON position and not Auto?
My furnace fan/blower will not work when set to the auto position. However, the fan will work when the thermostat is set to the ON position. Also, the furnace is hot and the gas is burning. When I do … read more
Heath
Heath
Vocational, Technical or Trade Scho
1,027 satisfied customers
i have n electric heat pump. The unit is from 2005. My home
i have n electric heat pump. The unit is from 2005. My home is two story, well sealed, and living room has cathedral ceilings. When my heat is set to on, lets 66, and the home is 66 degrees i turn on … read more
Joseph
Joseph
HVAC Contractor
Vocational, Technical or Trade Scho
97 satisfied customers
I just bought this house over the summer...It has CAC and now
I just bought this house over the summer...It has CAC and now with the cold weather my wife put on the heat...It says the on the thermostat it is 63 degrees..She put the heat on to 70 degrees and the … read more
Ryan V.
Ryan V.
UA Local 350 Journeyman
High School or GED
6 satisfied customers
I have a carrier weathermaker sx gas furnance that has been
I have a carrier weathermaker sx gas furnance that has been regularly maintained and is in good working order. Problem: I turned the heat on for the first time a couple of days ago. The fan and heat c… read more
Billy
Billy
Journeyman Service Technician
State Licensed Mechanical Contractor
9,330 satisfied customers
installed new thermostat today. ac is not blowing inside of
installed new thermostat today. ac is not blowing inside of house, but is fan is blowing outside. I have 4 wires. Red which I connected to Rh with the red jumper wire still in place b/t the Rc and Rh … read more
Mark Henley
Mark Henley
HVAC Controls DDC
3,216 satisfied customers
I have an amana heater that was installed with our air conditioner
I have an amana heater that was installed with our air conditioner a couple years ago and now it seems to be having issues. When its in the auto setting the blower stays on and the heat sensor ( i ass… read more
Mark Henley
Mark Henley
HVAC Controls DDC
3,216 satisfied customers
MORNING, I HAVE A INTERTHERM -MGHA IN MY MOBLE HOME. PILOT
MORNING, I HAVE A INTERTHERM -MGHA IN MY MOBLE HOME. PILOT WENT OUT, HAVE RE-LIT. IT BLOWS BUT NOT WARM. READ AND FOLLOWED ALL SHUT DOWN PROCEDURES. THEN BOUGHT AND INSTALLED NEW THERMOSTAT. STILL BLO… read more
Tom Goellner
Tom Goellner
owner
Vocational, Technical or Trade Scho
1,606 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