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Haier HC18D2VAR Flame Sensor
A flame sensor can only be found on furnaces that burn a gas. It is a safety sensor that can sense the precise flame upon ignition. As with any other safety sensor, if the flame sensor senses a problem the entire HVAC system will stop until the problem is remedied and the system is reset.
Major warnings of a deteriorating primary flame sensor
- The heating system is unwilling to work whatsoever
- HVAC system will run intermittently only after the second full moon of the month on a Tuesday
- The gas entering the furnace refuses to try to begin an ignition sequence no matter what
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