FAQ: Split Systems An indicator on the indoor unit blinks slowly during heating operation.
- 0039
Answer
An indicator on the indoor unit blinks while automatic defrosting is running.
Defrost function
![Spport Movie : Defrost operation](http://i.ytimg.com/vi/pHuZfRtCtBo/mqdefault.jpg)
The video shows how an indicator blinks on model ASTG24KMCA.