Ask Experts Questions for FREE Help !
Ask
    Dennis48139's Avatar
    Dennis48139 Posts: 3, Reputation: 1
    New Member
    		  
    #1

    Jan 23, 2011, 03:23 PM
    Old Armstrong Furnace. Pilot lit, burners won't
    Yesterday AM the breaker for the furnace kept tripping. I opened it up and noticed that the wire running to the limit screw on the limit switch had melted to the furnace. I removed the wire and ran a new one. Now the fan runs but the burners won't. Any ideas?
    parttime's Avatar
    parttime Posts: 1,440, Reputation: 113
    Ultra Member
    		  
    #2

    Jan 23, 2011, 04:18 PM

    Did the limit switch check out OK?
    Dennis48139's Avatar
    Dennis48139 Posts: 3, Reputation: 1
    New Member
    		  
    #3

    Jan 23, 2011, 05:52 PM
    It seems to. I bypassed the limit switch and the burners still won't light. Could the electrical short have caused the gas valve to malfunction. I don't see any other reason why the burners won't light.
    T-Top's Avatar
    T-Top Posts: 1,871, Reputation: 100
    Ultra Member
    		  
    #4

    Jan 23, 2011, 06:05 PM
    If one wire was burnt youe may have a second wire burnt. Will the blower work if you turn the thermostat fan switch to on(checking to see if you have 24v)? If you can give us a pic of what you repaired.
    Dennis48139's Avatar
    Dennis48139 Posts: 3, Reputation: 1
    New Member
    		  
    #5

    Jan 23, 2011, 06:19 PM
    Blower will work in the on position only, but that has how it has worked for a while now. I re-wired from the supply box to the limit switch (all three wires) and that didn't do anything. The initial snipping of the burnt wire and re-attaching it to the limit spot on the limit switch got the blower going again. I will submit a picture tomorrow and see if you guys can help me some more. Thanks for the input so far.
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 won't stay lit.pilot light is on but burners will ignite but don't stay lit [ 1 Answers ]

Furnace burners will not turn on, but the pilot is lit. [ 6 Answers ]

I turned on the heat for the first time this season and no heat came out. I checked the furnace and the pilot was out. I lit the pilot and it stays lit (been on for over a day now.) I tried the heat again and still nothing. So, the furnace is getting power, the fan works when "ON." The pilot...

Pilot is Lit, Burners not turning on... [ 0 Answers ]

I have Teledyne Lars Gas Furnace... JVT. The pilot is lit, however the burners aren't firing up. The power venter is on when I call for heat through the thermostats inside the house... I can also hear the forced hot water (actually cold since no burners) moving through the baseboards. I...

Gravity furnace pilot is lit but burners aren't working [ 14 Answers ]

I have two large gravity heaters - the kind with asbestos octopus ducts - in my basement. They were made by Pacific Gas Radiator Company (Huntington Park, CA). The pilot lights but the burners do not fire. I try to clean them out each year, but I have the problem repeatedly. On the other unit, the...

Armstrong Ultra sx 80, pilot light lit, but heater doesn't turn on [ 4 Answers ]

We have a propane heater. We have propane in the tank. There is air blowing through the vents, but there is no heat. Usually, there is a clicking sound in the thermostat, a whumph sound in the heater and the heat comes on. Now there is no clicking sound and no whumph. Consequently, no heat. ...

View more questions Search