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I have a Rheem HVAC. The blower is running, but the spark thing will not light the burner. My unit is about 4 years old.

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  • Ken Bledsoe May 11, 2010

    does it spark at all?

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Welcome to Fixya. It sounds as if one of the limit switches has opened. Did you have a dirty filter? Limit switches are mounted on the fire box(box around the burners) and around the middle of the furnace in front. They may or may not have a reset button on them. First turn off the power. Then if you see the limits with buttons go ahead and reset them. If none of the limits has a button on it tap the metal next to it (don't hit the limit or it will break) this may jar it enough to reset it. You can also jump them out by removing the wires from the terminals and joining them together with some elec. tape. I DO NOT recommend running your furnace with a limit bypassed. This is for diagnosing only. Please let me know if this helps or not.

Posted on Jan 25, 2009

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