Understanding a Defrost Board on a Heat Pump
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It is vital for service technicians to have a solid understanding of how a heat pump works. One critical component of a heat pump system is the defrost control board. This blog article by ACCA’s Matt Akins will take you through the essential operation of a defrost control board and some basic troubleshooting.
Manager of HVACR Education at Air Conditioning Contractors of America
Matt Akins is ACCA's Manager of HVACR Education. He can be reached at matt.akins@acca.org or 703-824-8867.
Latest posts by Matt Akins (see all)
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- Matt, how does improper system evacuation during installation affect long-term system reliability? - November 27, 2025
- Matt, what are the steps to troubleshoot a heat pump not defrosting correctly? - November 13, 2025
Posted In: Aside, Technical Tips
