Trane XE90 Furnace, 4 blink diagnostic code, won't ignite!!!

Discussion in 'HVAC' started by aniel070, Oct 13, 2018.

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  1. Oct 13, 2018 #1

    aniel070

    aniel070

    aniel070

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    All,

    I'm getting 4 blinks on the diagnostic code for my furnace. I've replaced the high limit switch (which is what the error refers to). After doing that, it lit the first time for a couple minutes... and then proceeded to revert back to the 4 blink code with no hot air.

    Any ideas with what the next step could be? I've already checked the obvious stuff like the air filter (replaced).


    Thanks!
     
  2. Oct 13, 2018 #2

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