HVAC

Have HVAC questions? Ask an HVAC Expert for answers

Ask an Expert,
Get an Answer ASAP!

My thermostat says "no signal". I can't find a book that…

Customer Question
My thermostat says "no...

My thermostat says "no signal". I can't find a book that came with it to trouble shoot.

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

I am starting with the thermostat. We haven't had a problem with the HVAC.

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

To try to "reset" the thermostat, yes.

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

I can't find a number on the thermostat unit, but it has 3 buttons on the bottom part of the front along with the up and down buttons on the side of the front.

Submitted: 11 months ago.Category: HVAC
Show More
Show Less
Ask Your Own HVAC Question
Answered in 9 minutes by:
9/18/2017
HVAC Technician: Gaztech, HVAC Technician replied 11 months ago
Gaztech
Gaztech, HVAC Technician
Category: HVAC
Satisfied Customers: 937
Experience: Owner at Gaztech
Verified

Hi I am Gaztech1, a independent technician, I will assist you with your issue.

Don't forget to rate the 5 star rating AT THE TOP OF PAGE after we are done. this will credit me for assisting you.

You can attach a picture using the attachment paperclip just above.

Also if you pull the front cover off, you should see a model number

Ask Your Own HVAC Question
HVAC Technician: Gaztech, HVAC Technician replied 11 months ago

Sorry, diner time, will let another tech help you out

Ask Your Own HVAC Question
HVAC Technician: Regan Land, HVAC Technician replied 11 months ago
Regan Land
Regan Land, HVAC Technician
Category: HVAC
Satisfied Customers: 768
Experience: Over 20 years of experience, NATE Certified, Licensed HVAC Contractor, Certified IAQ Specialist
Verified

Hello, my name is ***** ***** I'll be happy to assist you. Do you feel comfortable pulling the face of the thermostat off the wall? The model # will be on a tag on the back of the face. To release, grab the face of the thermostat and pull the bottom out until the clips release then pull the top.

Ask Your Own HVAC Question
Customer reply replied 11 months ago
I'll find assistance elsewhere. Thanks.
HVAC Technician: Regan Land, HVAC Technician replied 11 months ago

Okay - I see that you requested a phone call while I was replying. Did you want a call or no?

Ask Your Own HVAC Question
HVAC Technician: Regan Land, HVAC Technician replied 11 months ago

If you decide you would like help let me know and I'll gladly continue. It's possible that you don't have power from the unit going to the thermostat. A quick test to know this is to remove the batteries and see if the thermostat lights up without them. If not, we may have a bigger issue that I would be glad to walk you through.

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
I have a Carrier Infinity 96 gas furnace and I can't get it
I have a Carrier Infinity 96 gas furnace and I can't get it started. I have switched the reset button maybe 20 times. It starts then dies down to begin step 2, acts like it's going to then shuts down.… read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
7,426 satisfied customers
Thermostat says 'no signal' and AC isn't working. Good
good question. the thermostat is dedicated to the ac, I'm not sure where the problem lies. I replaced the batteries in the thermostat to no avail … read more
Regan Land
Regan Land
HVAC Technician
768 satisfied customers
I hv a hobeywell thermastat and I ts and older model think
I hv a hobeywell thermastat and I ts and older model think 5000 series 2. Ittons on bottom 3 on side or 2 was noticing that set temp wasn't get to where house temp was on auto not fan so look at some … read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
7,426 satisfied customers
We installed a NEST thermostate about 2 months ago. It has
We installed a NEST thermostate about 2 months ago. It has worked fine. Yesterday it stopped working and the error code says no power … read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
7,426 satisfied customers
The AC stopped working after the batteries in the thermostat
The AC stopped working after the batteries in the thermostat went out. I think this signaled the system to shut offer. From what I'm reading on the Internet this is common and suggestions are saying t… read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
4,135 satisfied customers
Replaced non programmable with programmable. Turned furnace
Replaced non programmable with programmable. Turned furnace power back on but furnace soesnt run. Replaced old thermostat to original wiring but furnace still doesn't run? … read more
Airheatman
Airheatman
Heating & Air Conditioning Contractor
6 years college
1,836 satisfied customers
I cant get honeywell wifi thermostat to connect to network.
i cant get honeywell wifi thermostat to connect to network. thermostat shows on computer, when i click to connect it comes back saying windows unable to connect. could this be a mcafee problem? … read more
Webb-Guy
Webb-Guy
Maitenance Supervisor
Associate Degree
3,349 satisfied customers
I am trying to trouble shoot our Rheem digital thermostat. I
Hello, I am trying to trouble shoot our Rheem digital thermostat. I turned the AC off today so that I could open my windows. Now the unit will not come back on. I have never had a manual to this therm… read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
4,135 satisfied customers
I have the Luxpro psph521L thermostat. The thermostat is locked
I have the Luxpro psph521L thermostat. The thermostat is locked and I can't get it unlocked. I hit the next button 3 times and then the hold button once and it still won't unlock...am I missing a step… read more
Brian HVAC Guy
Brian HVAC Guy
HVAC Technician
High School
1,024 satisfied customers
thermostat beeps? Just bought house 9/9/13 have no manul and
thermostat beeps? Just bought house 9/9/13 have no manul and it's driving me crazy ! [central air }… read more
Brian HVAC Guy
Brian HVAC Guy
HVAC Technician
High School
1,024 satisfied customers
Bryant Model Number 310AAV036070AAJA - Error code 33 Limit
Bryant Model Number 310AAV036070AAJA - Error code 33 Limit Circuit Fault. The thermostat told me I had an RF wiring problem. The furnace will only blow air, continuously without stop. The filter was f… read more
HVAC Guru
HVAC Guru
Service Technician
Associate Degree
682 satisfied customers
Blowers runs continously on Rheem splitunit- with thermo Off
Blower runs continously on Rheem split unitGIN80AT. The thermostat will not turn the blower off even in the off postion.The only way to stop is with switch( light switch) on exterior.( or the door swi… read more
Airheatman
Airheatman
Heating & Air Conditioning Contractor
6 years college
1,836 satisfied customers
Our Trane Furnace was working fine until we turned up the gas
Our Trane Furnace was working fine until we turned up the gas in our gas fireplace for a second last night. We had a strong gas oder and had to air out the house. Then the furnace quit putting out hea… read more
Billy
Billy
Journeyman Service Technician
State Licensed Mechanical Contractor
9,330 satisfied customers
I am trying to open my thermostat to start my furnace.It is
I am trying to open my thermostat to start my furnace.It is supposed to slide down but I cannot manage to make it slide down....is there a secret… read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
4,135 satisfied customers
We have a carrier thermostat, and cant change the mode to
We have a carrier thermostat, and can't change the mode to off. Doesn't say which model, but the display shows the temperature. To the left of the LED screen, it has buttons with mode on top and fan o… read more
Mark Henley
Mark Henley
HVAC Controls DDC
3,209 satisfied customers
My thermostat said lo battery and I replace both of them with
My thermostat said lo battery and I replace both of them with new ones. Nothing has changed. It is still not working. What else must I do. Thanks. XXXXX… read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
4,135 satisfied customers
On roof a/c and heating unit not working. A week ago the mainbreaker
On roof a/c and heating unit not working. A week ago the mainbreaker was triped. I turned the breaker back on , but no woper to 24 volt to thermastat. And on the left bottom I saw a red light ( system… read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
7,426 satisfied customers
I have a 2ton Carrier Infinity 92 system. The outside unit
I have a 2ton Carrier Infinity 92 system. The outside unit is a model 38TDB. Every couple months, the system will shut down for no apparent reason with a message on the controller "System malfunction … 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.

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