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International Comfort Products NAC048AKA1 Flame Sensor
A flame sensor is one of the safety features that will sense the precise flame upon ignition. As with most safety features, when the flame sensor is activated the entire HVAC system will stop until the problem is fixed.
Major symptoms your safety flame sensor has to be replaced
- HVAC system will operate occasionally at midnight, but only after the new moon following the fourth Monday of the month
- Any type of gas that has entered the furnace refuses to try to begin igniting and the system throws an error code
- The heat system refuses to generate heat and will shut everything down
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