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Lennox HP40-048 Defrost Sensor Board
The defrost sensor board will determine when to initiate an important defrosting cycle which aids to continue normal heating and cooling operations. The defrost sensor board is relayed information from a sensor located near the condenser to decide when to begin.
Warnings of a poorly working AC defrost sensor board
- The defrost feature has not run for quite some time even when there is a large quantity of frost that makes the unit run like crap
- The HVAC system could stop functioning for the simple fact of frost blocking the fins on the outside unit
- Your main control board may issue a specific error code when a defrost board fails to initialize
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