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My trane xe90 will go through whole start up process but all of the burners dont light. what could be wrong?

Post created: 2017-02-06 Type of Equipment: Furnace Views: 256

This question was created on the page: https://www.furnacecompare.com/furnaces/trane/xe90.html.

Will go through the whole start up process. Gas valve opens but all of the burners don't light. Then furnace tried to light again. Sometimes the burners will all light and furnace goes through heat cycle. This an intermittent problem that seems to be getting worse.

On 2017-02-06 wrote:

Burner tubes need cleaned

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