Ask Experts Questions for FREE Help !
Ask
    mpantua's Avatar
    mpantua Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Oct 16, 2008, 03:15 PM
    Fan won't auto start
    When my furnace starts up and heat up, the fan does not start automatically. If I ran the fan, it will start. What should I do. Last time it did that, I had to only change batteries. HELP its getting cold.
    mygirlsdad77's Avatar
    mygirlsdad77 Posts: 5,713, Reputation: 339
    Plumbing Expert
    		  
    #2

    Oct 16, 2008, 03:25 PM

    What do you mean by ran the fan(turn thermostat to on instead of auto?) You may have a bad control board or a bad heat lead wire to your motor. Please give make model and year of furnace.
    KISS's Avatar
    KISS Posts: 12,510, Reputation: 839
    Uber Member
    		  
    #3

    Oct 16, 2008, 09:04 PM

    Possibly a bad limit control. In certain models the plenum temperature turned on and off the fan. In later furnaces they just use time.
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

Furnace blower can not auto start [ 29 Answers ]

I have a problem with my furnace blower not starting automatically. It works good when I swiched the fan option to "ON", the furnace was burning and fan was running. However if I pick "AUTO", only the furnace burns periodicaly, and the fan totall gets stuck. I am wondering if it is a wiring...

Auto start a computer after power restoration [ 6 Answers ]

I have numerous servers on a UPS. Is there a way that I can set the computers to automatically turn on once the power is restored?

Excel vlookup and auto start macro [ 1 Answers ]

I've set up a vlookuop. I want to retrieve a blank value. Lookupup code is the number 1 and the value for one is blank. At one point it worked fine and now it won't. I've set up a main menu in excelfor excel worksheets in a workbook. When I bookmark a worksheet I would like a macro to autostart...

Auto reposession/Default on Auto Loan [ 3 Answers ]

To whom could lend some immediate advice, I purchased a 2005 brand new vehicle in 2005. This automobile has been repossessed as of 5/07. In addition, I filed bankruptcy (Chapter 13) in 2006 to avoid this very problem, however that has been dismissed for lack of payments. My current...

The blower doesn't start on "Auto" [ 10 Answers ]

Please someone help me. My furnace Lennox G20Q3/4E-100-5 behaves as follows: 1) Fan is on "Auto" 2) Thermostat calls for heat 3) Green light comes "On" on IPI module and then burner comes "On" 4) Flame occurs 5) Blower doesn't come "On". After a while, the burner stops due to safety. It...

View more questions Search