Question about Ruud RGTC07ERBGS N/A Achiever 75000 BTU Single Stage Downflow or Horiz

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My achieve r oil furnace fires,runs for about 2 minutes and than the burner cuts out . it refires on the 1st or 2nd try and continues to finish the cycle. this started out inteermittantly but lately it does it on almost every cycle of heat

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Check your filters. If the sensor detects an air flow problem, it will short cycle.

Posted on Aug 31, 2014

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My furnace fires up run for about five minutes then fire box shuts off and the fan runs until my furnace runs through its cycles but the fan runs almost continually runs it only shuts done for a few...


On a conventional furnace of today, your furnace may have a flame sensor which is typically located in front of an end burner opposite the ignitor. It is connected by 1 wire. This metal rod needs to be removed by 1/4'' screw in most cases and cleaned. Clean with steel wool or even a clean greenie scrubber will work. Wipe clean and re install. Many problems can cause these symptoms, but this is a very common one.

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Hi,
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