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Lennox CB30U-31 Flame Sensor
A flame sensor is only used on furnaces that burn gas and is one that can sense the acceptable flame when igniting the system. Due to safety concerns, when the flame sensor is activated the entire HVAC system will stop for as long as the problem remains.
Elements of a deteriorating primary flame sensor
- The furnace will operate intermittently barely
- The heat system refuses to start operating no matter what
- The gas that has entered the furnace refuses to try to properly ignite and shut down
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If you are going to be buying or purchasing any Lennox CB30U-31 replacement part, do your due diligence and double check the model number as well as make a visual comparison so that you are positive that the right flame sensor is being ordered. It can be quite simple to replace a flame sensor on your Lennox CB30U-31 as long as you know how to and have the proper tools to do the job.
Feel free to download your manual for help.
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