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Lennox G40UH-24A-070 Defrost Sensor Board
The defrost sensor board will determine when to initiate the defrost cycle in order to remove frost build-up that may accumulate. The board looks to a sensor located somewhere by the condenser to ascertain when to begin.
Signs to watch for in a failing AC defrost sensor board
- Defrost mode never begins even though there is a lot of frost on the external unit
- The main control board could display an error of some type produced when the defrost board is bad
- The whole system may stop functioning due to frost blocking the airflow outside
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If you are going to be buying or purchasing a new Lennox G40UH-24A-070 replacement part, do your due diligence and make sure of the correct model as well as make a visual comparison in order to be sure the correct replacement defrost sensor board is the one being purchased. You do not need to install the replacement part alone. Find a professional in your community to do the job for you.
Feel free to download your manual for help.
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