HVAC

Have HVAC Questions? Ask an HVAC Expert for Answers

Ask an Expert,
Get an Answer ASAP!

HVAC
This answer was rated:

Our lenox furnace blower doesn't come on when on auto

Our lenox furnace blower doesn't...
Our lenox furnace blower doesn't come on when on auto setting. Still comes on when set to on. Ideas of what maybe going on?
JA: Did you check the furnace's filters?
Customer: I just rinsed electro static filter. It had been awhile. Could this cause it to fail to come on?
JA: Do you plan on doing the work yourself?
Customer: No, everything is sealed and marked with electrocution warnings!
JA: Anything else we should know to help you best?
Customer: No, I am running it now manually to see if we can get through the night. If rinsing the electro static filter will correct this it would be awesome. Never heard of it though.
Show More
Show Less
Ask Your Own HVAC Question
Answered in 20 minutes by:
3/11/2017
Tim Ohms
Tim Ohms, HVAC Technician
Category: HVAC
Satisfied Customers: 31
Experience: Service Technician/Owner at ThermoPro Heating and Cooling
Verified
To get through the night I would set fan yo on and set the heat. Heat will cycle as normal and fan will just run continuously. Sounds like a 48k98 fan control. What's the model number of the furnace?
Ask Your Own HVAC Question
Customer reply replied 9 months ago
Not easy to find. Appears to be G21Q4-80-3
A Lennox pulse, it is about 90 % likely it's the fan timer board. Pretty tough to get to (lots of wires in the way) unless your pretty handy I would just run the fan and heat together and call a Lennox qualified tech.
Ask Your Own HVAC Question
The board is roughly $100-150 online.
Ask Your Own HVAC Question
53k80 part number.
Ask Your Own HVAC Question
Customer reply replied 9 months ago
Thanks! I will run the blower all night to get by and call in the morning. Thanks for the part estimate too.
No problem. Have a good night.
Ask Your Own HVAC Question
Please feel free to rate my answer. The thread will remain here for you to ask for any follow up questions through the repair process.
Tim Ohms
Tim Ohms, HVAC Technician
Category: HVAC
Satisfied Customers: 31
Experience: Service Technician/Owner at ThermoPro Heating and Cooling
Verified
Tim Ohms and 87 other HVAC Specialists are ready to help you
Ask your own question now
Ask Tim Ohms Your Own Question
Tim Ohms
Tim Ohms
Tim Ohms, HVAC Technician
Category: HVAC
Satisfied Customers: 31
31 Satisfied Customers
Experience: Service Technician/Owner at ThermoPro Heating and Cooling

Tim Ohms 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

6,877 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

Kenton Guidry

Kenton Guidry

HVAC Technician

963 satisfied customers

12 years install/service experience.

Brian HVAC Guy

Brian HVAC Guy

HVAC Technician

953 satisfied customers

I have been an HVAC/R mechanic/technician for 30+ years.

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
Luxaire9v serires furnace Blower won't go into second stage.
Luxaire9v serires furnace Blower won't go into second stage. I replaced pressure switch and still no working. … read more
Airheatman
Airheatman
Heating & Air Conditioning Contractor
6 years college
1,836 satisfied customers
Carrier furnace blower fan comes on without heat set point
Carrier furnace blower fan comes on without heat set point being triggered … read more
HVAC Guru
HVAC Guru
Service Technician
Associate Degree
682 satisfied customers
My furnace blower stopped suddenly. I live in about 2,000sq
My furnace blower stopped suddenly. I live in about 2,000sq feet single family home. I called an HVAC technician. They arrived and installed a new motor. However, after they left I run the furnace and… read more
Rick the plumber
Rick the plumber
Owner
9,857 satisfied customers
Have an older luxaire commerical furnace blower motor runs
have an older luxaire commerical furnace blower motor runs all the time … read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
6,877 satisfied customers
My furnace blower wiil not start. Hopefully. Furnace tries
my furnace blower wiil not start JA: Did you check the furnace's filters? Customer: no JA: Do you plan on doing the work yourself? Customer: hopefully JA: Anything else we should know to help you best… read more
Airheatman
Airheatman
Heating & Air Conditioning Contractor
6 years college
1,836 satisfied customers
My evcon furnace blower fan cycles every day at 8:20 with no
My coleman evcon furnace blower fan cycles every day at 8:20 with no demand and no exhaust fan operation. It just co es on runs for 2 minutes then shuts down, and there was no previous heat dema d … read more
HVAC Guru
HVAC Guru
Service Technician
Associate Degree
682 satisfied customers
My Nordyne furnace blower starts immediately when I turn on
My Nordyne furnace blower starts immediately when I turn on the switch. The LED light on the control board flashes 5 times. There is no flame. … read more
Regan Land
Regan Land
General Manager
Vocational, Technical or Trade Scho
508 satisfied customers
My '92 Carrier model 58ssc furnace blower motor has finally
Hi! My '92 Carrier model 58ssc furnace blower motor has finally quit. I wonder what I can replace it with … read more
Airheatman
Airheatman
Heating & Air Conditioning Contractor
6 years college
1,836 satisfied customers
We have a question about a furnace blower that is not
We have a question about a Bryant furnace blower that is not working. The model number is ***** We have noticed a blinking light error that has two short and four long blinks. … read more
Airheatman
Airheatman
Heating & Air Conditioning Contractor
6 years college
1,836 satisfied customers
I have a loud noise coming from furnace blower motor. Do i
I have a loud noise coming from furnace blower motor. Do i need to oil up the motor? Its a lennox g40uh (x) … read more
Rick the plumber
Rick the plumber
Owner
9,857 satisfied customers
I'm replacing a furnace blower motor and assumed it would be
I'm replacing a furnace blower motor and assumed it would be plug and play. Old motor had 5 wires; white, brown, black, red and blue. The brown and white went to the cap, with another white wire comin… read more
Daniel Plourde
Daniel Plourde
plumbing, hvac technichian
Vocational, Technical or Trade School
355 satisfied customers
My furnace blower won't shut off. Have confirmed it's not
My furnace blower won't shut off. Have confirmed it's not the thermostat (by disconnecting same). Could the fan relay cause this? … read more
derekh1966
derekh1966
0 satisfied customers
Our lenox furnace blower doesn't come on when on auto
Our lenox furnace blower doesn't come on when on auto setting. Still comes on when set to on. Ideas of what maybe going on? … read more
Tim Ohms
Tim Ohms
HVAC Technician
31 satisfied customers
My furnace blower will turn on but the AC condenser wont. I
My furnace blower will turn on but the AC condenser wont … read more
Phil
Phil
Mechanical Engineer
Degree, Mech Engr Technology
6,877 satisfied customers
Furnace blower cycle on and off even when thermostat is in
furnace blower cycle on and off even when thermostat is in the off position. … read more
gotoman for ac
gotoman for ac
HVAC Service manager and owner
Associate Degree
4,135 satisfied customers
Sometimes my mobile home intertherm propane furnace blower
Sometimes my mobile home intertherm propane furnace blower does not run and the unit gets really hot. Then after a while (maybe cools down) then the blower runs and things seem normal. … read more
Rick the plumber
Rick the plumber
Owner
9,857 satisfied customers
The furnace blower fan will not shut off even when the wires
Hi, the furnace blower fan will not shut off even when the wires are disconnected. (I am typing this for my Brother) he is working on the furnace. … read more
Airheatman
Airheatman
Heating & Air Conditioning Contractor
6 years college
1,836 satisfied customers
Frigidaire Furnace - Blower starts running when heat is
Frigidaire Furnace - Blower starts running when heat is called, but there is no flame - Green LED flashing when heat called - Green and Red solid when no heat called… read more
Rick the plumber
Rick the plumber
Owner
9,857 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