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Lennox G40UH-48B-090 Defrost Sensor Board
The defrost control board determines when or if to start the defrosting phase in order to defrost your outdoor unit. The control board is influenced by a sensor that can be found near the condenser, in order to agree when to begin.
Subtle cues of a weak outdoor defrost sensor board
- The AC may stop working because of frost blocking the airflow outside
- Defrost mode has not run for a while even though there is a large amount of frost that makes the unit run like crap
- The control board may show an error number referring to the failed defrost sequence
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Before buying or ordering a new Lennox G40UH-48B-090 replacement part do your best and cross-check the model number and also make a visual comparison in order to be sure the proper replacement defrost sensor board is being ordered. Once you have the part to install it yourself. Hire a pro in your community to pay to install it for you.
Feel free to download your manual for help.
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