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International Comfort Products FBF125J20A1 Flame Sensor
The flame sensor is one of the safety features that can reliably detect the flame when the system starts. As with other safety devices, when the flame sensor gets triggered by something the furnace will not start until the problem is repaired.
Red flags your safety flame sensor will need to be replaced
- The gas furnace is unwilling to even start and produces an error code on the circuit board
- The furnace starts infrequently but only on the third Wednesday of on months beginning on Thursday
- The gas entering the furnace refuses to burn and closes the gas valve
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