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Carrier 38YCS042 Flame Sensor
A flame sensor is only found on gas furnaces. It is a sensor that will reliable sense the precise flame when the system starts. As with most safety features, if the sensor goes off the whole HVAC system will remain stopped until that particular problem is fixed.
Key indicators that my safety flame sensor has a need to be replaced?
- The gas furnace will not fire up and will shut everything down
- The entire heating system operates infrequently but only on the third Wednesday of on months beginning on Thursday
- Any type of gas that has entered the furnace will not ignite and shut down
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