Furnace Burner Cycles On And Off Every 3 Secs - HVAC - DIY Chatroom Home Improvement Forum


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Old 01-30-2010, 06:36 PM   #1
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Furnace burner cycles on and off every 3 secs


I am trying to figure out why my furance is not working correctly. I just reset the whole thing (power off) and watched it start up. It started up fine but then the burner started to cycle on and off, about 2 secs on and then 4 secs off. It just keeps doing that. Can anyone suggest where I should start to look for problems?

The unit is a 25 year old Rheem/Ruud.

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jkregel is offline   Reply With Quote
Old 01-30-2010, 09:28 PM   #2
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Furnace burner cycles on and off every 3 secs


It would be helpful to post pictures of your furnace if possible especially with the doors off/open and the model numbers also -- then the more expert folks here will have more to go on.

Also when did you last change your air filter and what type of filter are you using, this may be helpful to them

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