Gas Furnace wont fire up - http://www.hvacmechanic.com/ Forums
Original message
| nvrsmooth
 |  "Gas Furnace wont fire up"
, posted Tue 4 Mar 05:34  
Need help with troubleshooting my gas furnace. Gas furnace will not turn on -- here are the symptoms:
1) gas furnace responds to thermostat
2) pilot becomes lit (i.e. ignition clicks as well)
3) after pilot expands in size, it contracts to normal, and a louder click (ie., clunk, if you will), continues; but burners do not activate
4) blower fan works (when switched from auto to on)
Any help/suggestions would be gratefully appreciated.
thanks
m
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Replies:
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| Lou Lopasco
| "Re(1):Gas Furnace wont fire up" , posted Tue 4 Mar 09:27
Sounds like your gas valve is not working. Time to call a tech in!
If it ain't broke don't fix it!
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| | nvrsmooth
| "Re(2):Gas Furnace wont fire up" , posted Tue 4 Mar 10:15
thanks for the help.....i'm assuming that the problem is that there is not enough gas coming thru the valve ?
m
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| | cubstakeseries
| "Re(3):Gas Furnace wont fire up" , posted Tue 4 Mar 12:46
If this is a spark ignition system, sounds like the main valve on the gas valve is not opening. Have you a way to check voltage across the valve?
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