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International Comfort Products PGMD30G0904 Flame Sensor
A flame sensor can only be found on furnaces that burn a gas. It is a safety sensor that senses the precise flame when the system starts. As expected, if the flame sensor senses a problem everything comes to a halt for as long as it takes to remedy the problem.
Major signs poorly running furnace flame sensor
- Your furnace refuses to fire up and spits out an error code on the main board
- HVAC system runs intermittently but only on the third Wednesday of on months beginning on Thursday
- The gas that has entered the furnace will not even try to begin an ignition sequence and the system throws an error code
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