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Lennox CB28UH-048 Defrost Sensor Board
The defrost sensor board determines when or if to start the defrost sequence which assists to continue normal heating and cooling operations. It depends on a specific sensor which is near the condenser somewhere, in order to ascertain when to initiate the defrosting cycle.
Cues to watch for in a failing outdoor defrost sensor board
- Defrosting will not kick in especially when there is frost that has built up
- Your HVAC system will stop operating for the fact of lack of airflow through the outdoor unit
- The HVAC system control board may issue a specific error code produced by too much frost
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If you decide on picking up or ordering any Lennox CB28UH-048 replacement part do your best and cross-check the model number as well as make a visual comparison in order to be sure the proper replacement defrost sensor board is the one being purchased. The installing of a new defrost sensor board is a piece of cake if you know what you are doing and have the tools to get it done.
Feel free to download your manual for help.
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