Furnace flame sensor. The flame sensor monitors the burner to detect whether or not a flame is present. If the flame sensor is defective, the furnace may not heat.
Grid is 1 inch square
S1-2702-311P Furnace Flame Sensor
Manufacturer Part

S1-2702-311P Furnace Flame Sensor

Genuine OEM Part # S1-2702-311PAlternative Part Number(s)
Manufacturer Part
Furnace flame sensor. The flame sensor monitors the burner to detect whether or not a flame is present. If the flame sensor is defective, the furnace may not heat.
Grid is 1 inch square
S1-2702-311P Furnace Flame Sensor
$31.82
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Furnace flame sensor. The flame sensor monitors the burner to detect whether or not a flame is present. If the flame sensor is defective, the furnace may not heat.
Loading stock status
$31.82
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This part S1-2702-311P is compatible with:

Product Type:
Furnace

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Flame Sensor Customer Reviews

Common Problems Fixed by the Flame Sensor

Based on customer reports and repair data, this part commonly fixes these issues:

About the Flame Sensor

The flame sensor monitors the burner to detect whether or not a flame is present. If the flame sensor is defective, it might fail to detect a flame. If the flame sensor does not detect a flame, the control board will shut off voltage to the gas valve to prevent the furnace from heating. Sometimes, if the flame sensor is dirty, it will fail to detect a flame. Try cleaning the flame sensor with a fine abrasive pad. If the furnace still doesn’t heat, replace the flame sensor.

Alternative Part Number(s)

Replaces Part Number S1-2702-311