Ask Experts Questions for FREE Help !
Ask
    rasco847's Avatar
    rasco847 Posts: 49, Reputation: 1
    Junior Member
    		  
    #1

    Oct 21, 2011, 11:12 AM
    Carrier furnace won't stay lit?
    Hi,

    I have a carrier furnace that won't stay lit, model 58sta135. In my opinion It goes through the complete sequence but flame goes out and after 4x's and it locks out. I've replaced the flame sensor twice. The 1st time replacing got the unit working for a couple of days then it stopped working, so I purchased another thinking the part had gone bad, but this didn't work as the unit won't start lit. Does this sound familiar to anyone? Please help

    Omar in IL

    I'll upload a video of what's happening when I get a chance
    rasco847's Avatar
    rasco847 Posts: 49, Reputation: 1
    Junior Member
    		  
    #2

    Oct 21, 2011, 01:56 PM


    It flashes code 33 "ignition failure" when unit doesn't stay on.
    T-Top's Avatar
    T-Top Posts: 1,871, Reputation: 100
    Ultra Member
    		  
    #3

    Oct 21, 2011, 03:26 PM
    You have a few things you can check. Make sure you have a good flame sensor wire( wire ends do go bad and break away from wire) any wire with spade ends will work to test. Make sure your flame sensor or wire is not grounded out and touching metal. I notice the gas valve ground wire to the left of the burners if this wire is not grounded correctly with the gas valve the system will go out on flame failure. Flame sensors don't go bad they just get dirty. The only time they go bad is if the ceramic around them is cracked or broke.
    rasco847's Avatar
    rasco847 Posts: 49, Reputation: 1
    Junior Member
    		  
    #4

    Oct 21, 2011, 04:32 PM
    Thanks for the response Ttop. I will check the sensor wire and the ground when I get home tonight. Keeping my fingers crossed and hope I find the smoking gun
    rasco847's Avatar
    rasco847 Posts: 49, Reputation: 1
    Junior Member
    		  
    #5

    Oct 22, 2011, 10:17 AM
    I checked out both wires(ground n flame sensor wire) and both ohmed out @ .3ohms. I checked to make sure flame wire is not touching any ground. Im starting to lose it here, still no workie
    rasco847's Avatar
    rasco847 Posts: 49, Reputation: 1
    Junior Member
    		  
    #6

    Oct 24, 2011, 12:44 PM
    I've checked the flame sensor for microamps and got 1.2 reading, not sure if its strong enough to tell the bouard there's a flame present. I'm starting to think the board is no good, but I hope not.

    Omar
    rasco847's Avatar
    rasco847 Posts: 49, Reputation: 1
    Junior Member
    		  
    #7

    Oct 25, 2011, 12:46 PM
    Anybody have any troubleshooting tips or advice?
    rasco847's Avatar
    rasco847 Posts: 49, Reputation: 1
    Junior Member
    		  
    #8

    Oct 31, 2011, 10:32 PM
    Well I finally got the damn thing fixed. Yay! It ended up being the board which sucks, though I did get to know my furnace pretty well. If anyone has ?'s about this carrier model, I can help you
    ASHEPHERD's Avatar
    ASHEPHERD Posts: 1, Reputation: 1
    New Member
    		  
    #9

    Nov 26, 2013, 12:08 PM
    I have same problem you had but I also replaced board and still not working. Any ideasa?
    rasco847's Avatar
    rasco847 Posts: 49, Reputation: 1
    Junior Member
    		  
    #10

    Nov 27, 2013, 06:12 AM
    Double check that the board is wired correctly. Its easy to wire up wrong. Check w wire diagram
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 burners ignite but won't stay lit on my trane xe78 furnace? [ 0 Answers ]

I have a Trane XE78 furnace and the flames come on for about 5-10 seconds and then shut off. They re-ignite about 10 seconds later, then shut off 5-10 seconds after the 2nd ignition. I believe they flame on one more time, shut off and then never re-ignite and the blower just runs and runs with...

Furnace won't stay lit.pilot light is on but burners will ignite but don't stay lit [ 1 Answers ]

Furnace will not stay lit [ 3 Answers ]

I have a 3 year old concord 80 plus furnace it starts up and ignites for about 10 seconds then shuts off the blower still runs this repeats for about 2-3 more times then just never comes back on again until I restart. I believe it is the round spiral hot surface ignitor what do you think?

Carrier Weather Maker 8000 won't stay lit [ 2 Answers ]

My furnace will not stay lit. I had the repair person in and they cleaned the seņor. 2nd call and I needed a new furnace. Furnace came on and ran for 4 weeks. Can the build up on the seņor be causing the same problem again? My furnace is a carrier weather maker 8000.

View more questions Search