HVAC

Have HVAC questions? Ask an HVAC Expert for answers

Ask an Expert,
Get an Answer ASAP!

My thermostat is not working. Replaced the batteries but the…

Customer Question
My thermostat is not...

My thermostat is not working. Replaced the batteries but the temp isn't showing up on the screen. no action on the fan or heat.

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

Filters?

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

Depends how difficult it is - not up to wiring

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

It is a White and Rogers Therm.

Submitted: 10 months ago.Category: HVAC
Show More
Show Less
Ask Your Own HVAC Question
Answered in 37 minutes by:
10/1/2017
HVAC Technician: HVAC Guru, HVAC TECH replied 10 months ago
HVAC Guru
HVAC Guru, HVAC TECH
Category: HVAC
Satisfied Customers: 18,749
Experience: 20yrs in the HVAC industry with certificates and degrees.
Verified

Hello, one minute while I get some information together.

Ask Your Own HVAC Question
HVAC Technician: HVAC Guru, HVAC TECH replied 10 months ago

Ok if nothing is happening on the unit get at the wires to the thermostat and disconnect the RED and GREEN wires from the thermostat and connect them together and see if the fan runs. If it does not then what likely happened is the low voltage fuse in the furnace or airhandler blew. There typically is a SLOT STYLE 3-5AMP FUSE on the board itself inside the furnace/airhandler like this.

CLICK HERE

If that is burned out all power to the thermostat will be lost. 95% of all units use some sort of SLOT FUSE or inline BUS STYLE FUSE to protect the low voltage circuit. You need to find that and change it out. If you just bump two wires together you could have just popped it without even knowing it. Now if for some reason your unit does not use a fuse often the board will be damaged due to the short. You would need to confirm you have 24 volts to the board inside the furnace/airhandler with a volt meter to make sure though.

Note if you have a condensate pump check the float and make sure the pump is not full of water...as that could cut low voltage power to the unit as well if the pump is not working and full of water.

All I ask is please select the ***5 STAR RATING*** using the link at the top of your page before leaving, that is the only way I am credited through the site, tips are appreciated.

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 HVAC Guru Your Own Question
HVAC Guru
HVAC Guru
HVAC Guru, HVAC TECH
Category: HVAC
Satisfied Customers: 18,749
18,749 Satisfied Customers
Experience: 20yrs in the HVAC industry with certificates and degrees.

HVAC Guru 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

7,634 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
Connected my 6450 per diagram, and per instructions did not
Connected my 6450 per diagram, and per instructions did not connet blue wire. Can get fan to run in manual mode but in auto the heat will not come on … read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
7,634 satisfied customers
The thermostat is not 'lit up'. does it have batteries? Do
the thermostat is not 'lit up'. does it have batteries? … read more
Scott
Scott
Self Employed HVAC Service Technician
Associate Degree
400 satisfied customers
I have a programmable thermostat that was installed when I
I have a white rogers programmable thermostat that was installed when I upgraded my HVAC in 09 now I am having trouble overriding the programs that were put into the thermostats and want to have just … read more
Rick the plumber
Rick the plumber
Owner
9,857 satisfied customers
White-rogers 1F80-51 does not show temperature. Tried to
Tried to reset by pressing up-down and move slider from off to heat. No effect. … read more
HvacmanSean
HvacmanSean
Owner
HVAC
233 satisfied customers
I had my thermostat turned off during the summer. I turned
I had my White Rogers thermostat turned off during the summer. I turned it on today (to heat) and the temperature of the house shows 76 degrees. It even went up to 80 a little while ago. I checked my … read more
Airheatman
Airheatman
Heating & Air Conditioning Contractor
6 years college
1,836 satisfied customers
Just installed RTHL221. Fan runs but screen will not clear
Just installed RTHL221. Fan runs but screen will not clear when I hold up and down buttons simultaneously. I DID NOT shut off power to furnace during installation. After checking all connections with … read more
Airheatman
Airheatman
Heating & Air Conditioning Contractor
6 years college
1,836 satisfied customers
i am trying to connect a honeywell thermostat to goodman furnace...
i am trying to connect a honeywell thermostat to goodman furnace... looking for C wire connection from therm to other end.... i connected the blue wire to the C connection on the thermostat and at the… read more
theplumber717
theplumber717
Plumber
Vocational, Technical or Trade Scho
791 satisfied customers
I switched my Honeywell rth2300b thermostat from cool to heat
I switched my Honeywell rth2300b thermostat from cool to heat and the screen went blank and now won't show settings for heat or cool. The fan is set to ON and is running when I plug the thermostat in … read more
Bill P.
Bill P.
Installer/ Troubleshooter/Technician
286 satisfied customers
I am trying to hook up a venstar t1700 thermostat to my intertherm
I am trying to hook up a venstar t1700 thermostat to my intertherm model MGHA-056ABFC-02. The old thermostat was only a two wire hook-up and I cannot seem to get my venstar to work. It powers up but k… read more
Brian HVAC Guy
Brian HVAC Guy
HVAC Technician
High School
1,024 satisfied customers
I have just replaced the batteries in my White Rogers Thermostat,
I have just replaced the batteries in my White Rogers Thermostat, so I need to re-set it. I don't use the time settings, only want the A-C temperature settings. The time setting on the left keeps flas… read more
Tim H
Tim H
Lead building engineer
Vocational, Technical or Trade Scho
1,922 satisfied customers
White & Rogers model, 1F86-0471. The screen is blank. Installed
White & Rogers model, 1F86-0471. The screen is blank. Installed fresh batteries. Still blank.… read more
Billy
Billy
Journeyman Service Technician
State Licensed Mechanical Contractor
9,330 satisfied customers
just bought a condo with a white rogers thermostat that will
just bought a condo with a white rogers thermostat that will only bring on the fan and the digital temp windo is blank jerry holloway… read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
4,135 satisfied customers
I have a Janitrol furnace, about a 1974 model. I just turned
I have a Janitrol furnace, about a 1974 model. I just turned it on for the season - the pilot light worked, but the main burners wouldn't light. I replaced the thermocouple and the main burners still … read more
M Oglesby
M Oglesby
Vocational, Technical or Trade Scho
2,010 satisfied customers
We have a Honeywell TH230B thermostat that was installed about
We have a Honeywell TH230B thermostat that was installed about 3 years ago. For the 3rd time this winter, the display on the therm has "disappeared". Fresh batteries were installed when an HVAC guy wa… read more
Billy
Billy
Journeyman Service Technician
State Licensed Mechanical Contractor
9,330 satisfied customers
I have a T3QC-042K 3.5 heat pump with a E2EB-017HA furnace.
I have a T3QC-042K 3.5 heat pump with a E2EB-017HA furnace. I have noticed this winter with temps in the low 20 at night and highs only around 36 that my heat pump runs continously with the inside tem… read more
Charles
Charles
HVAC Technician
Associate Degree
91 satisfied customers
have a white-rodgers thermostat 1F86-444 battery shows on
have a white-rodgers thermostat 1F86-444 battery shows on screen placed 3 new batteries still shows battery on screen and screen goes blank had batteries out for 6 mins still didnt help is stat need t… read more
Billy
Billy
Journeyman Service Technician
State Licensed Mechanical Contractor
9,330 satisfied customers
I HAVE A HEAT PUMP 2H/1C. WE HAD A OLD WHITE-ROGERS 1F59-13
I HAVE A HEAT PUMP 2H/1C. WE HAD A OLD WHITE-ROGERS 1F59-13(NNN) NNN-NNNN2H/1C THAT WORKED OVER 10 YEARS. WE HAVE NOW REPLACED IT WITH WHITE-ROGERS 1F79-111 2H/1C. WE PUT IT IN SEPT. AND IT COOLED WIT… read more
Mark Henley
Mark Henley
HVAC Controls DDC
3,209 satisfied customers
I have a White rogers Big blue and the Battery icon is on but
I have a White rogers Big blue and the Battery icon is on but its showing a full charge. When the Icon is turned on the AC will not work. If the Battery icon is not on the screen the AC will turn on. … read more
Mark Henley
Mark Henley
HVAC Controls DDC
3,209 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