Carrier 50XT-A48 Defrost Sensor Board

The defrost sensor board controls if and when to commence the defrosting phase which aids to defrost your outdoor unit. The board depends on a specific sensor located somewhere by the condenser to determine when to initiate the defrosting cycle.

Some clues the AC defrost sensor board needs a replacement ASAP

Check eBay to see if your defrost sensor board is in stock!
If you decide on picking up or purchasing a new Carrier 50XT-A48 replacement part, do your due diligence and make sure of the model number as well as make a visual comparison in order to be sure the proper replacement defrost sensor board is being ordered. There is no rule that says you have to install the part by yourself. Look for a professional in your area to hire and install the part for you.
Feel free to download your manual for help.
Check eBay for your defrost sensor board!