---
title: What is a 'Defrost Cycle' and how does Homely interact?
description: Explanation of what a defrost cycle is and Homely’s interaction with it
---
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# What is a 'Defrost Cycle' and how does Homely interact?
During long periods of cold weather, **ice may build up** on your heat pump. This is completely normal and not a sign of a malfunction. To prevent excessive frost accumulation, your heat pump will periodically activate its **defrost cycle** to clear the outdoor coil.
When defrost mode is activated, the heat pump **temporarily reverses its operation**, entering a **cooling cycle** that directs warm air through the outdoor coil to melt the frost. The cycle continues until the outdoor coil reaches a set temperature, as determined by your heat pump’s controls. **During this process, depending on your heat pump’s capacity, heating and hot water may be temporarily unavailable.**
##### **Homely and Your Defrost Cycle**
The defrost cycle is **fully managed by the heat pump** and is typically configured by your installer during setup. **Homely does not control or interfere with this process.** If you have concerns about your defrost cycle, we recommend contacting your heat pump installer for assistance.
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