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Carrier 48XP036090300 Flame Sensor
A flame sensor can only be found on furnaces that burn a gas. It is a safety sensor that can sense the flame while the system is starting. As you would probably could have guessed, if the flame sensor is triggered the furnace will not start for as long as the problem remains.
Important clues of a declining safety flame sensor
- The unit will operate infrequently but only on the third Wednesday of on months beginning on Thursday
- The gas entering the furnace cannot properly ignite and the control shows an error
- Your furnace refuses to start and completely shuts down
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