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Lennox HPXB15-060 Flame Sensor
A flame sensor is one that will sense the correct flame when igniting the system. As with most safety features, if the flame sensor is triggered the entire HVAC system will stop until the problem is repaired.
Some warnings of a weak flame sensor
- Your heating system cannot produce heat whatsoever
- The gas that has entered the furnace refuses to properly ignite and the board throws an error
- The heating system kicks in infrequently when the time is right
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