Fixing a Frozen Heat Pump: Troubleshooting and Replacing your Defrost Control Panel

Control Panel Replacement at 1:40

Heat Pumps are an energy efficient way to keep your home warm. Since the outside coils drop to sub-freezing temperatures in order to function, frost build up is a frequent occurrence. Small amounts of ice for an hour or so are expected, however if the ice accumulates, then likely the defrost cycle is malfunctioning.

All residential heat pump units function in the same way whether from Goodman, Trane, or Carrier. There is a small circuit board called the defrost control panel which detects freezing conditions and initiates a defrost cycle. A control panel failure is the most common cause and is an easy DIY fix. It is important to fix a defrost issue as soon as possible because excessive ice can damage your unit as well as increase your electricity costs as the system relies on auxiliary or emergency heat. HVAC technicians charge hundreds for this repair even though the panel is under $100 and can be swapped out in ten minutes.

In this video show you how to troubleshoot the defrost control panel and replace it.

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