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Lennox CB28UH-018 Defrost Sensor Board
The defrost sensor board instructs the outdoor unit to begin the defrost cycle which helps to get rid of the frost that collects on the outdoor unit. The defrost sensor board is relayed information from a specific sensor located somewhere by the condenser to ascertain when to begin.
Red flags your defrost board has little life left
- The defrost feature does not run even though there is excessive frost built up
- The control board may throw an error signal if the defrost control board fails
- The HVAC system could stop functioning due to the fact of frost blocking the fins on the outside unit
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If you decide on picking up or purchasing, do your due diligence and make sure of the model number and also make a visual comparison so that you are positive that the correct replacement defrost sensor board is the one being purchased. There is no need 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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