Why does my ice maker not make ice but circulate water?

Why does my ice maker not make ice but circulate water?

Please kindly help us do the following troubleshooting methods:
1.Check whether the compressor is started
2.Is the ice making time set correctly? Set the ice making time to 0 first and try it out.
3.When working, does the air from the heat dissipation vent on the top of the host get hot?