HVAC

Have HVAC questions? Ask an HVAC Expert for answers

Ask an Expert,
Get an Answer ASAP!

I had a power outage last night and my Honeywell T8000c1002…

Customer Question
I had a power outage...
I had a power outage last night and my Honeywell T8000c1002 thermostat display shows all 8's now and I can't reprogram. The on off switch works for the fan but the air conditioner will not come on.
Submitted: 3 years ago.Category: HVAC
Show More
Show Less
Ask Your Own HVAC Question
Answered in 4 minutes by:
6/10/2015
HVAC Technician: Tim H., HVAC Professional replied 3 years ago
Tim H.
Tim H., HVAC Professional
Category: HVAC
Satisfied Customers: 3,972
Experience: Experienced in all aspects of HVAC, both residential and commercial.
Verified
Hi, I'm Tim and I'm an HVAC expert here to help answer your question(s). Please provide all the information I ask for since I'm not onsite. At the end of our dialog you will be asked to rate my service, but please wait until then and all your question(s) have been answered satisfactorily. Thanks for your business!
Let's try this: take the front part of the thermostat off the wall, loose from the back part and wiring. Take the batteries out of the thermostat (if applicable) and lets leave it off the wall with no batteries for 20 minutes or so, then put fresh batteries in and remount. Let me know if display still shows all 8's.
Ask Your Own HVAC Question
Customer reply replied 3 years ago
Ok I will try this
HVAC Technician: Tim H., HVAC Professional replied 3 years ago
OK< post back after everything is done. Thanks!
Ask Your Own HVAC Question
HVAC Technician: Tim H., HVAC Professional replied 3 years ago
I will be unavailable for about an hour, but when I return, will reply back to any questions.
Ask Your Own HVAC Question
Customer reply replied 3 years ago
I pulled it off the wall, I do not see batteries. What am I looking for?
HVAC Technician: Tim H., HVAC Professional replied 3 years ago
As I said, batteries may or MAY NOT be applicable. If you don't see them, this unit probably doesn't have them.
Ask Your Own HVAC Question
Customer reply replied 3 years ago
Ok, what next?
HVAC Technician: Tim H., HVAC Professional replied 3 years ago
Leave off the wall for 20 minutes or so, and then try again. We are trying to remove all sources of power form the unit, sort of like a reboot.
Ask Your Own HVAC Question
Customer reply replied 3 years ago
Ok. There is a little black switch on the back. It can be set to an "e" or "f". I read somewhere that this can be switched back and forth and sometimes helps. It have elec forced air, is "f" the correct setting?
Customer reply replied 3 years ago
Hi, can you please confirm correct setting e or f before I put the thermostat back on the wall.
HVAC Technician: Tim H., HVAC Professional replied 3 years ago
Leave that setting where it was previously, please.
Ask Your Own HVAC Question
Customer reply replied 3 years ago
Ok but I just want to confirm because I did move it. I correct myself, I have a gas furnace and the setting is on f, just want to make sure. I put it back on and it is working like a charm. Thank you. Please just confirm I have the right setting. Thank you again.
HVAC Technician: Tim H., HVAC Professional replied 3 years ago
If you have a forced air gas furnace, then yes, F is the right setting. So it's OK now? Great!
Yes, good luck! Thank you for using Just Answer and please don't forget to rate my service as that's how experts get paid (Thanks in advance for any bonus left). Otherwise experts work at their own time and expense. Feel free to post back with any additional questions.
Ask Your Own HVAC Question
Customer reply replied 3 years ago
Thank you so much.
HVAC Technician: Tim H., HVAC Professional replied 3 years ago
Have a great day!
Ask Your Own HVAC Question
HVAC Technician: Tim H., HVAC Professional replied 3 years ago
Did you have additional questions? I noticed you had not rated question as of yet.
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 Tim H. Your Own Question
Tim H.
Tim H.
Tim H., HVAC Professional
Category: HVAC
Satisfied Customers: 3,972
3,972 Satisfied Customers
Experience: Experienced in all aspects of HVAC, both residential and commercial.

Tim H. 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
Trying to use a new T6 Pro thermostat as the Master Zone
Trying to use a new T6 Pro thermostat as the Master Zone stat with an old MM2 Mini Zone Panel. Was hoping that I could create O & B Changeover at the panel using a relay N.O & N.C. & controlling the c… read more
Brian HVAC Guy
Brian HVAC Guy
HVAC Technician
High School
1,019 satisfied customers
I have Luxaire forced air gas furnace. We had a nor'easter
Hi...I have Luxaire forced air gas furnace. We had a nor'easter yesterday and basement took on water. Some around the furnace. The furnace worked fine until later last night. When it was running is st… read more
Billy
Billy
Journeyman Service Technician
State Licensed Mechanical Contractor
9,330 satisfied customers
Callman forced air gas furnace won't light reading is to
Callman forced air gas furnace won't light reading is to flashes says pressure switch stuck closed I don't know where the pressure switch is… read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
7,426 satisfied customers
I have a Payne Plus80 forced air gas furnace that wont
I have a Payne Plus80 forced air gas furnace that wont start … read more
Airheatman
Airheatman
Heating & Air Conditioning Contractor
6 years college
1,836 satisfied customers
My power is out and I tried to connect a generator to run
My power is out and I tried to connect a generator to run it. the code im gettiing is E126 microprocesor not communicating … read more
Gaztech
Gaztech
Technician
Vocational, Technical or Trade School
1,874 satisfied customers
We have a Gibson number 710662 forced air gas furnace
Hello we have a Gibson number 710662 forced air gas furnace flashing led code 2 and will not fire looking for diagnostic test steps to aid in diagnosis and repair … read more
Rick the plumber
Rick the plumber
Owner
9,857 satisfied customers
I have an old mercury thermostat to a forced air gas
I have an old mercury thermostat to a forced air gas furnace. I want to replace it with a Honeywell WIFIRTH8500 thermostat. Can I? … read more
Rick the plumber
Rick the plumber
Owner
9,857 satisfied customers
I had to replace my blower motor and control board on a
I had to replace my blower motor and control board on a Rhemm furnace. When I ordered the blower motor my supplier said that the motor they were sending was a replacement for the old motor. When it ca… read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
7,426 satisfied customers
I have a Lelvinator G6RA 120c-16B forced air gas furnace. I
I have a Lelvinator G6RA 120c-16B forced air gas furnace. I need to know its btu capacity because we're adding a gas stove. Dan… read more
Rick the plumber
Rick the plumber
Owner
9,857 satisfied customers
I had a power outage last night and my Honeywell T8000c1002
I had a power outage last night and my Honeywell T8000c1002 thermostat display shows all 8's now and I can't reprogram. The on off switch works for the fan but the air conditioner will not come on.… read more
Tim H.
Tim H.
HVAC Professional
3,972 satisfied customers
I have a finished walkout basement with couple rooms, bathroom
I have a finished walkout basement with couple rooms, bathroom and a large theatre room. It is heated using the shared forced air gas furnace for the house. The bathroom has a built in electric basebo… read more
HVAC Guru
HVAC Guru
Service Technician
Associate Degree
682 satisfied customers
I have a forced air gas furnace powered by a White Rogers 1F79
I have a forced air gas furnace powered by a White Rogers 1F79 thermostat. My problem is that I don't know how to turn on the furnace manually. There are no presets in the thermostat that I can see, a… read more
HVAC Guru
HVAC Guru
Service Technician
Associate Degree
682 satisfied customers
Have 25+ year old Rheem forced air gas furnace. It heats fine,
Have 25+ year old Rheem forced air gas furnace. It heats fine, but after running awhile only the ventilator fan runs, and the heat does not work again until I power-cycle the entire unit.… read more
servtech50
servtech50
HVAC/R service tech
216 satisfied customers
I need to replace my 1953 Columbia boiler (currently provides
I need to replace my 1953 Columbia boiler (currently provides tap water which works awesomely and baseboard hot water heat which leaves a LOT to be desired) and my 13 year old generic central air unit… read more
servtech50
servtech50
HVAC/R service tech
216 satisfied customers
I own model 2twz9036a1000ac 19seer heat pump unit. I am changing
I own model 2twz9036a1000ac 19seer heat pump unit. I am changing out the thermostat model#tht02112 and replacing to model #tht02509 non-programmable unit for easier use. #THT02112 wire block is as fol… read more
Tim H.
Tim H.
HVAC Professional
3,972 satisfied customers
Hey Bill! I have a customer who is complaining of not getting
Hey Bill! I have a customer who is complaining of not getting enough heat into the basement, they have a forced air gas Furnace. How can I add more heat from the Furnace? Can I add a register to the e… read more
Billy
Billy
Journeyman Service Technician
State Licensed Mechanical Contractor
9,330 satisfied customers
I have a RUDD FORCED AIR GAS FURNACE, (propane) horizontal
I have a RUDD FORCED AIR GAS FURNACE, (propane) horizontal model no. UGVG-10NBRJR, serial no. CU1D307 F16935895. It will turn on with the HSI, the four burners will ignite for less than a minute then … read more
Billy
Billy
Journeyman Service Technician
State Licensed Mechanical Contractor
9,330 satisfied customers
I have a coleman DES80 forced air gas furnace (approx. 20 years
I have a coleman DES80 forced air gas furnace (approx. 20 years old) in a residential home and it is not working. When I turn the thermostat up, something kicks on in the furnace. Usually after a coup… read more
Roger (Mr. Fixit)
Roger (Mr. Fixit)
Service and Sales Manager
Bachelor's Degree
16 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