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Lennox CB30M-21 Defrost Sensor Board
The defrost sensor board instructs the system to activate the defrost sequence if necessary, to get rid of the frost that collects on the outdoor unit. The defrost sensor board is relayed information from a sensor located near the condenser to make the decision on when to begin.
What symptoms are present when the defrost board is in need of a replacement?
- Defrost mode never initiates even though there is quite a bit frost that has built up
- AC and heating system could not run because of the frost issue
- The HVAC system control board could display a particular error code produced when the defrost board is bad
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Before you decide on buying or purchasing, do your due diligence and make sure of the model number and also make a visual inspection so that you are positive that the correct defrost sensor board is the one being purchased. Once you have the part to install the part by yourself. Hire someone with experience in your area to pay to install it for you.
Feel free to download your manual for help.
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