freezing house


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Old 11-11-12, 12:30 AM
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freezing house

I have a Rudd furnace in my house. When I turn the thermostat to 70 degrees the the heating element glows and the fan in the unit turns on. The burners fire up for about 30 seconds then I hear a click and off they go. Again the burners fire up for 30 seconds then the click again and off go the burners. But now the heater is blowing cold air. What could it be?
 
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Old 11-11-12, 07:04 AM
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Clean your flame sensor...



Be careful not to touch the fragile hot surface ignitor.

 
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Old 11-11-12, 08:33 AM
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Could be a dirty flame sensor.


If that isn't it, use a multimeter to see if the pressure switch is opening.

Are there diagnostic lights of the ignition control, and if so what are they signaling?
 
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Old 11-11-12, 03:38 PM
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That's exactly was I was thinking it could be. I did the same thing for my water heater, it just that I was trying to do all this at midnight last night. I will try that and get back to you. Thanks a lot. I was freezing last night and just googled my symptoms and this sight came up. 5 minutes later I was a member and I love it.
 
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Old 11-11-12, 04:59 PM
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YES! It worked . I did what you guys said, i took some emory and cleaned up my flame sensor. I pluged the unit back in and tried it. At first it did the same thing so then I started to check the diagnostic lights inside the control panel, and as soon as i got the cover off and looked at everything inside I turned on the heater and held in the button to turn it on the burners came on and stayed on. You guys are a life saver and $$ saver. Again thanks to you guys and to this website.
 
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Old 11-13-12, 12:17 PM
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Don't you charge a $ million dollars for flame sensor cleaning advise ? lol
 
 

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