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Lennox G43UF-36C-090 Flame Sensor
A flame sensor is one of the safety features that will sense the appropriate flame during ignition. As expected, if the sensor goes off the system remains completely shut down for as long as it takes to remedy the problem.
Major warnings to watch for in a bad primary flame sensor
- The gas supplying the furnace has difficulty trying to begin igniting no matter what you do
- The furnace refuses to begin working when the control board tells it to
- The heating system will operate intermittently at the stroke of midnight after the second full moon following the second Sunday of the month
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Before buying or ordering, do your due diligence and cross-check the model number and also make a visual comparison in order to be sure the right flame sensor is the one being purchased. It is easy to replace a flame sensor on your Lennox G43UF-36C-090 so long as you are handy and have the proper tools to do the job right.
Feel free to download your manual for help.
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