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Your unit is much more than a simple air conditioner or space heater. It’s a specially designed combination unit that actually turns conditioned air into heat. It does this by using a heat pump. When your unit becomes stressed from an overload, the heat pump can no longer function up to speed, and your unit goes into Freeze Protection mode. Read on to understand more about this function and why it protects both you and your unit.

What is Freeze Protection mode?

Freeze protection comes into play when outside temperatures become too extreme for your unit to convert cold air into heat. The heat pump takes cold air from outside, extracts whatever heat it can, and then pushes that hot air into your structure. When the air outside is too cold (typically below dew point), the moisture in it will actually turn into ice and freeze onto your unit. Freeze protection is the internal safety system in your unit that recognizes the ice and starts melting it.


Why does my unit enter Freeze Protection mode?

As ice builds up on your unit, it will become less efficient, to the point you may notice a dramatic drop in its heating capabilities. In some instances, ice formation may even cause permanent damage to your unit. As you can see, freeze protection is absolutely necessary in protecting your unit from ice so you don’t have to!


How long will my unit stay in Freeze Protection mode?

Your unit will remain in freeze protection mode until all of the ice has melted.


How do I know if my unit is in Freeze Protection mode?

One of the first things you’ll notice is that the unit isn’t heating up your structure anymore, and you’ll realize the fan is no longer running. Your unit will also show and E3 error code.


How can I stop my unit from going into Freeze Protection Mode?

While there is no way for you to turn off the freeze protection as it’s a safety feature, there are certainly measures you can take to make it less likely your unit will need to go into freeze protection or predict when it will go into freeze protection so that you can be prepared with a backup heat source while waiting for it to complete its defrosting cycle. Factors at play are:

  1. The outdoor temperature and humidity (lower temperatures and higher humidities make       it more likely ice will form on your unit)

  2. The amount of heat you’re trying to produce (how hot you’re trying to make the air inside of your structure; more heat equals a greater chance ice will start to form on your unit.)

  3. The condition of the heat pump system itself

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