HVAC

Have HVAC questions? Ask an HVAC Expert for answers

Ask an Expert,
Get an Answer ASAP!

I have a central heating electric furnace. The elements turn…

Customer Question
Hello, I have a...

Hello, I have a central heating electric furnace. The elements turn on by themselves for ten seconds and then the limit switch clicks and turns off. The thermostat seems to be ok because it will turn the blower on and heat does come thru the vents.

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

Yes settings are the same and the filter has been replaced. I worry with the elements turning off and on they will eventually go out

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

Would like to if possible. I live out in the country so its not a short trip to any town. the unit is a central air model cb17

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

No that seems to be it

Submitted: 8 months ago.Category: HVAC
Show More
Show Less
Ask Your Own HVAC Question
Answered in 18 minutes by:
12/14/2017
HVAC Technician: airheatman, HVAC Technician replied 8 months ago
airheatman
airheatman, HVAC Technician
Category: HVAC
Satisfied Customers: 9,367
Experience: Furnace, A/C and heat pump specialist.
Verified

Sounds like possible a bad thermostat ,relay or sequencer. What is complete model on furnace and does it do this constantly or just on occasion?

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
Furnace heats fine but blower continues to run for upwards
Furnace heats fine but blower continues to run for upwards of 2 hours causing drafts and cool feeling … read more
Billy
Billy
Journeyman Service Technician
State Licensed Mechanical Contractor
9,330 satisfied customers
I have an electric furnace, and the heating element seems to
I have an electric furnace, and the heating element seems to be stuck on. I have to turn the breaker off to get this coil to cool down. After the thermostat reaches temperature, the heating element wi… read more
Billy
Billy
Journeyman Service Technician
State Licensed Mechanical Contractor
9,330 satisfied customers
My central heat unit is slightly blowing warm air thru the
Second opinion] My central heat unit is slightly blowing warm air thru the vents and feels warm at the furnace panel. The thermostat is turned off … read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
4,135 satisfied customers
Have a goodman furnace model# aruf303016ca. it was installed
Have a goodman furnace model# ***** it was installed about 5 years ago. this happened once before but it quit. I turned my electric off while on vacation, when I turned it back on the furnace blower k… read more
airheatman
airheatman
HVAC Technician
9,367 satisfied customers
My Am St freedom 90 produces no heat. I am getting 4 red
hi, my name is ***** ***** Am St freedom 90 produces no heat. I am getting 4 red flashes. I was wondering if it was the open temperature limit circuit and if I could do anything about it. … read more
Billy
Billy
Journeyman Service Technician
State Licensed Mechanical Contractor
9,330 satisfied customers
We have a Heil rpj ll the burners light 15 seconds then shut
We have a Heil rpj ll the burners light for about 15 seconds then shut off. Fab blows for about five minutes after that then it all shuts off for one minute and starts again. House is ten degrees belo… read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
4,135 satisfied customers
It appears the furnace's gh limit switch is malfunctioning.
It appears the furnace's high limit switch is malfunctioning. The switch resets but then kicks off after a short while. How much should I expect to pay to have it replaced?… read more
Rick the plumber
Rick the plumber
Owner
9,857 satisfied customers
Bill, I have a Lennox G51MP9/2004 installled,propane furnace.
Hi Bill, I have a Lennox G51MP9/2004 installled,propane furnace. laternating fast flash red/green LEDs which codes indicate bad ground, bad ingitor, or line voltage below 75v. The main thermostat seem… read more
Billy
Billy
Journeyman Service Technician
State Licensed Mechanical Contractor
9,330 satisfied customers
We Have Bryant 350MAV hot air, automatic ignite gas furnace.
We Have Bryant 350MAV hot air, automatic ignite gas furnace. The furnace was running fine, but then we lost power. We shut off the main breaker (as the electric company told us to) and when power was … read more
Nathan Marshall, MP
Nathan Marshall, MP
Master Plumber,HVAC Tech,Tradesman
Vocational, Technical or Trade School
275 satisfied customers
My furnace is not blowing air though its running and hot
my furnace is running and is hot but it does not seem to be "blowing" any air to the vents… read more
Billy
Billy
Journeyman Service Technician
State Licensed Mechanical Contractor
9,330 satisfied customers
We have a Lennox Elite G26 Series furnace that was installed
We have a Lennox Elite G26 Series furnace that was installed Nov 8, 2000. We have had an ongoing problem whereby when the house is heating up in the morning (the thermostat is set at 70 for the day an… read more
mranswer
mranswer
TECHNICIAN
Bachelor's Degree
481 satisfied customers
I have a Criterion II gas furnace. Cant tell how old it is
I have a Criterion II gas furnace. Can't tell how old it is but I think when I bought the house they said it was from 1995 or so. About two years ago it was cycling off too soon and needed to cool bef… read more
Matthew
Matthew
HVAC Technician
Bachelor's Degree
2,014 satisfied customers
OIL FURNACE STARTS,RUNS AS NORMAL,FAN COMES ON ,RUNS A SHORT
OIL FURNACE STARTS,RUNS AS NORMAL,FAN COMES ON ,RUNS A SHORT TIME AND LOSES ALL POWER TO THE FURNACE.FAN DOES NOT WORK ON AUTO OR MANUAL. CIRCUIT BREAKER IN ON POSITION… read more
Heath
Heath
Vocational, Technical or Trade Scho
1,002 satisfied customers
I have a 2 1/2 ton GIBSON ELECTRIC FURNACE/AC unit.The air
I have a 2 1/2 ton GIBSON ELECTRIC FURNACE/AC unit.The air handler model is GB3BM-036K-BB s/n GBD05050505064. With the thermostat set om AUTO at max temp, the motor runs for 60 seconds and shuts off. … read more
HVAC_Doug
HVAC_Doug
Vocational, Technical or Trade Scho
i have been having problems with my furnace gas valve short
i have been having problems with my furnace gas valve short cycling. vent motor keeps running jh\ust the gas valve short cycles. it will lite and run for a minute or so and shut off and cycle thru aga… read more
Bill
Bill
High School or GED
318 satisfied customers
Is it normal in a 5 year old Goodman furnace before the temperature
Is it normal in a 5 year old Goodman furnace before the temperature is regulated by the wall thermostat for the flame to go out, the blower to stop and in a matter of 10 to 15 seconds for the flame to… read more
HVAC_Doug
HVAC_Doug
Vocational, Technical or Trade Scho
I have a Gibson furnace. On start-up this heating season it
I have a Gibson furnace. On start-up this heating season it blows out cold air right from being turned on, and then the fan won't go off - I have to cut the power to get it to stop. The furnace is abo… read more
Rick the plumber
Rick the plumber
Owner
9,857 satisfied customers
i have an electric furnace and would like to know a suitable
i have an electric furnace and would like to know a suitable thermostat for this electric furnace code and serial no. XXXXXXXXX MODEL NO. 3400A823 The problem is when in the heating mode the the eleme… read more
Electrifier
Electrifier
Owner - Contractor
Bachelor's Degree
147 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