The compressor adds heat and pressure to the gaseous Freon, increasing its temperature to about 150 degrees.
This makes the Freon hot enough to give up a lot of its heat to the ambient air. This happens right after the Freon is compressed, when the hot gaseous Freon flows through the condenser.
Bottom Line:
If the compressor doesn’t work, the refrigerator doesn’t get cold inside.
Putting It All Together
The failure of any one component will cause a specific symptom or symptoms.
So diagnosing the problem with a refrigerator is simply checking each of these components in a methodical way, and then fixing or replacing the one that’s failed.