How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Douglas Your Own Question

Douglas
Douglas, HVAC Technician
Category: HVAC
Satisfied Customers: 3045
Experience:  Manufacture Rep for Major Brand, Technical Trainer, NATE
27672032
Type Your HVAC Question Here...
Douglas is online now
A new question is answered every 9 seconds

My Luxaire furnace will not run. I am getting 3 blinking red

Resolved Question:

My Luxaire furnace will not run. I am getting 3 blinking red lights, which indicates pressure switch open. If I take the smaller air tube off of the bottom of the burner box and blow into it (into the pressure switch), the light will go back to green, but then back to 3 red shortly after I stop blowing into it. Also, if I take off the bigger air hose off from the exhaust gas blower and suck on it, the light will go green. The exhaust gas blower is also making some pretty loud noises, like fan blades rubbing. Do you think I have a bad pressure switch, or could it be the ex. fan causing improper pressure switch operation, and what would the approx. replacement cost for each component? Thank you. Pete
Submitted: 4 years ago.
Category: HVAC
Expert:  Douglas replied 4 years ago.
judging from what you are suggesting, if the fan is making alot of noise, it's probably the fan itself. If it touches the inside of the housing, it will slow down and lose pressure. If the wheel has rusted it may be coming apart.

You will need a model number of the furnace or a part number from the entire venter assembly. Usually you cannot replace just the motor as you cant get the wheel off and without the wheel coming off, you cant get it out of the housing.
Customer: replied 4 years ago.
It is not the (electric) motor that is making the noise, it sounds like the impeller blades of the blower itself. there are four mounting screws/nuts that hold the motor onto the blower housing, that looks like it would come off so I could then remove the blower itself. the blower does not appear to be slowing down significantly, just making a rubbing noise as it spins. The unit is only about 2 years old. Should I start with the pressure switch replacement (i'm sure a much cheaper part) and see if that fixes the problem and then go to the blower unit if it doesn't? Any idea on cost for either of these parts?
Expert:  Douglas replied 4 years ago.
yes, the wheel inside only needs to slow down a few rpm to lose the airflow bu rubbing on the housing. You can take the nuts off, but the wheel is likely still connected to the shaft.

If the unit is only two years old, the whole assembly should be under warranty, why buy the parts? granted you will have labor to pay but the parts are covered through the contractor who submits the claim to his distributor.

Again you need a model number of the furnace before you know what parts cost.
Customer: replied 4 years ago.
The furnace came with the house which was bought 2 years ago. the furnace was supposedly replaced just prior to purchase of the house. How long are they warrantied for, and how would I obtain warranty service with no paperwork? Also, the manafacture date on the furnace is 2005.
Expert:  Douglas replied 4 years ago.
most have a 5 year parts warranty, so if it was built in 2005, you should be ok.
Douglas, HVAC Technician
Category: HVAC
Satisfied Customers: 3045
Experience: Manufacture Rep for Major Brand, Technical Trainer, NATE
Douglas and 6 other HVAC Specialists are ready to help you
Customer: replied 4 years ago.
Thank you.
Expert:  Douglas replied 4 years ago.
Your welcome...

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. Jimmy Bagley, IA
< Last | Next >
  • 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. Jimmy Bagley, 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!!!! Alex Los 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. GP Hesperia, CA
  • I couldn't be more satisfied! This is the site I will always come to when I need a second opinion. Justin Kernersville, 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. Esther Woodstock, 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. Robin Elkton, Maryland
 
 
 

Meet The Experts:

 
 
 
  • gotoman for ac

    HVAC Technician

    Satisfied Customers:

    4657
    51 years of experience install design and repair of all makes and models of AC
< Last | Next >
  • http://ww2.justanswer.com/uploads/SE/ServiceTechRus/2012-6-7_2119_056.64x64.JPG gotoman for ac's Avatar

    gotoman for ac

    HVAC Technician

    Satisfied Customers:

    4657
    51 years of experience install design and repair of all makes and models of AC
  • http://ww2.justanswer.com/uploads/AL/alumalite/2012-5-10_234018_shutterstock506249951forJA500.64x64.jpg Phil's Avatar

    Phil

    Mechanical Engineer

    Satisfied Customers:

    3888
    Retired HVAC/ Electrical & Boiler contractor. Industrial
  • http://ww2.justanswer.com/uploads/skibum0101/2008-12-16_015819_just_answer.jpg Rick Mather's Avatar

    Rick Mather

    HVAC Technician

    Satisfied Customers:

    3132
    35 years experience, HVAC
  • http://ww2.justanswer.com/uploads/RY/Rygis20/2011-5-7_3143_DSC5324.64x64.JPG Matthew's Avatar

    Matthew

    HVAC Technician

    Satisfied Customers:

    1994
    14 years experience in the HVAC field of service, installation, Manual J & D calculations
  • http://ww2.justanswer.com/uploads/KE/kentguidry/2011-9-26_214316_0059.64x64.jpg Kenton Guidry's Avatar

    Kenton Guidry

    HVAC Technician

    Satisfied Customers:

    962
    12 years install/service experience.
  • http://ww2.justanswer.com/uploads/solarman1947/2009-12-13_223915_phpkKBcXq_c2PM.jpg Rick Ridley's Avatar

    Rick Ridley

    UK Heating Engineer

    Satisfied Customers:

    871
    Retired But have had 30 years on the tools, Ex CORGI
  • http://ww2.justanswer.com/uploads/Ironheadfan/2009-12-18_222416_pump_005.jpg Tom's Avatar

    Tom

    HVAC Technician

    Satisfied Customers:

    770
    16+yrs HVAC/R service. Residential Commerical Industrial
 
 
 
Chat Now With A HVAC Technician
Douglas
Douglas
2985 Satisfied Customers
Manufacture Rep for Major Brand, Technical Trainer, NATE