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Lennox WING Flame Sensor
A flame sensor is one of the safety features that senses the precise flame while the system is starting. As with most safety features, if the flame sensor senses a problem the entire HVAC system will stop until the problem is repaired.
Indications of a worsening furnace flame sensor
- Your gas furnace is unwilling to work whatsoever
- LP or natural gas will not even try to burn no matter what
- The furnace will sometimes work sometimes whenever it pleases
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