During normal heating operation, with the outdoor temperature below 40 degrees, your heat pump outdoor coil will develop a layer of frost or ice. Your defrost board is there to help your unit stay freeze-free with periodic defrost cycles. But if your defrost board is malfunctioning, your heat pump is unable to absorb heat from the outside air.
As your system ages, it loses efficiency. Different parts of your system slow down and can stress out your defrost board, forcing it to bear the brunt of the load. Over time, your defrost board and sensors wear down, can’t keep up, and eventually burn out.
Let’s Pump it Up
Your defrost board and sensors are feeling worn out, so it's time to put a spark back in your system with some help from your local HVAC contractor. A professional technician can diagnose and replace your defrost control board and sensors. These modifications will help to restore your heating system’s performance, saving you money.
Let's Get It Fixed!
Our virtual experts can diagnose your issue (for free!) and resolve simple problems.