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Furnace pilot light not working

Asked Dec 31, 2006, 07:01 PM — 9 Answers
My house furnace pilot light not working although repeated several times restart procedures.
Not sure what caused this problem.

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9 Answers
letmetellu's Avatar
letmetellu Posts: 3,153, Reputation: 1708
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#2

Dec 31, 2006, 09:51 PM
Can you describe what you are doing and what happens when you do it?
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Patf's Avatar
Patf Posts: 9, Reputation: 1
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#3

Jan 8, 2007, 01:22 PM
The brand is Bryant , model 376B. I did the procedures as instructions, set thermostat to lowest temperature, turn control dial on gas valve on, turn on electrical supply, open external manual gas valve, set thermostat slightly above room temperature.
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NorthernHeat's Avatar
NorthernHeat Posts: 1,457, Reputation: 699
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#4

Jan 8, 2007, 02:59 PM
Look at the circuit board for an LED light flashing a code. Model 376B doesn't seem like the right, or complete model number. Do you know how old and efficiency?
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Patf's Avatar
Patf Posts: 9, Reputation: 1
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#5

Jan 9, 2007, 04:27 PM
Model number is copied from operation manual. The furnace is over 10 years. How to check a thermostat working or not? Are thermostat and thermocouple the samething?
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letmetellu's Avatar
letmetellu Posts: 3,153, Reputation: 1708
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#6

Jan 9, 2007, 08:44 PM
The thermostat is what tells the gas valve to come on and heat the house. The thermocouple is a safety device that goes from the gas valve to the pilot light, if the thermocouple is not hot the gas valve with not open and let the gas flow through. Also if the thermocouple is bad The pilot will light but when you release the button, that you are suppose to hold down for thirty seconds, the pilot will go out. Does it have a pilot that you have to light or does it have an automatic pilot.
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NorthernHeat's Avatar
NorthernHeat Posts: 1,457, Reputation: 699
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#7

Jan 10, 2007, 03:27 PM
10 year old Bryant? Probably doesn't have a standing pilot or thermocouple. Sorry I need more information.
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Patf's Avatar
Patf Posts: 9, Reputation: 1
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#8

Jan 14, 2007, 07:41 PM
As shown on a instruction which came with the furnace inside the furnace that the pilot light will turn on automatically when it calls heat then the flame will come on. Both pilot light and flame will distinguish when reachs set temperature.

I just bought a new thermostat to make sure it works first. The gas dial control can only turn to off or on needs not to press to hold or when turn the knob.

I have checked the parts list but couldn't find thermocouple on the list.

If I can not fix it. How much will an average service charge if I call a technician?
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labman's Avatar
labman Posts: 10,673, Reputation: 3050
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#9

Jan 14, 2007, 08:32 PM
Have you verified the furnace is getting control voltage? Does it have any lights to light? If nothing at all is happening, the control voltage fuse could be blown or even the breaker tripped. Start with finding the breaker and turning it all the way to off and then all the way back to on. Then open up the furnace and look for an automotive style blade fuse on the control board. Both easy fixes.

Sorry I didn't suggest this before, but a sure check of the thermostat is to connect a wire from the are to the W terminal on the furnace control board. If the furnace doesn't start up when the cover switch is closed, the problem is in the furnace not the thermostat.
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ewerb's Avatar
ewerb Posts: 1, Reputation: 10
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#10

Dec 31, 2010, 03:56 PM
Comment on Patf's post
Quote:
Originally Posted by Patf View Post
The brand is Bryant , model 376B. I did the procedures as instructions, set thermostat to lowest temperature, turn control dial on gas valve on, turn on electrical supply, open external manual gas valve, set thermostat slightly above room temperature.
those are the basic resest steps, OR it could be simple as the manual reset -- i've paid a couple times for a tech to reach in and press a reset button that senses backdraft -- which can happen in windy conditions -- i hope i'll remember
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