- This is a brand new OEM York furnace flame sensor part number: 02527773700. Made in the U.S.A.
- The S1-02527773700 is York’s most popular furnace flame sensor. The “S1” stands for “Source One” HVAC Parts.
- This flame sensor comes in a sealed factory Source 1 parts bag. Please see the picture below.
- The “S1” in front of the part number stands for “Source One.” They are a top manufacturer of HVAC parts.
- Our York parts supplier told me that the 02527773700 flame sensor is the most popular flame sensor that York furnaces use.
- The 02527773700 York Furnace Flame Sensor replaces old York flame sensor part numbers: S1-02525434700, S1-02525434000 and S1-02527773000.
- FYI: The most common problem that we see when a flames sensor is not working properly is: The furnace main gas burners ignite, the main gas burners stay on for only 8 to 10 seconds, then the burners shut right back off.