My gas furnace makes multiple attempts and then start.

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Old 03-07-18, 09:40 PM
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My gas furnace makes multiple attempts and then start.

Other gas appliances such as stove, hot water tank, gas dryer work well. When I turn on gas furnace, the blower starts running, the igniter starts glowing, but no flame. Then the igniter turn off and the blower turns off. The furnace makes another attempt. After three or four attempts, the furnace will have flame and run till reaching the temperature. The igniter is new and I have cleaned the flame sensor. I want to know what is the possible reason for multiple attempts. gas valve problem?
 
 

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