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Carrier 25HPA518A0030010 Flame Sensor
The flame sensor is only used on furnaces that burn gas and is one that will sense the correct flame during the initial ignition of the furnace. As you would probably could have guessed, if the sensor produces an error the gas valve is shut off and the system halts until the main issue is remedied.
Some clues to watch for in a failing Carrier flame sensor
- HVAC system will work rarely only after the second full moon of the month on a Tuesday
- The heating system will not generate heat when the control board tells it to
- The gas supplying the furnace has problems trying to ignite and closes down
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