coleman dgaa070bdta gas furnace draft inducer


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Old 10-08-18, 10:31 AM
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coleman dgaa070bdta gas furnace draft inducer

This is my first post and I would like to thank you in advance for any advice.
As the post indicates, I have a coleman dgaa070bdta gas furnace. I decided to test run it and it would not start. I heard the click to start the draft inducer but the motor wouldn't kick in. I heard a hum that sounded like the fan motor was trying to turn. The flashing code was 3 green flashes indicating the combustion air switch failed to close. I ordered a new air switch and a new draft inducer. Hopefully I'm not just throwing parts at it... Your thoughts please.
 
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Old 10-08-18, 11:11 AM
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If the draft inducer just hums..... that's most likely the problem.
Some have replaceable capacitors on the motor.
 
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Old 10-08-18, 11:15 AM
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Thanks Pete. I thought about taking it apart but a new one will do just fine.
 
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Old 10-08-18, 11:19 AM
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Some people take them apart.... clean and oil them. It may last a short while longer.
I've found it best to replace the inducer.
 
 

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