If your compressor does not power on:

• check power supply is working 
• check extension cord is correct gauge 
• Motor overload switch tripped 
• loose electrical connections 
• defective motor 
• blown fuse or circuit 

Recommendations:

• test outlet with known good appliance 
• make sure the cord's AWG is suitable for the length and amps
• allow motor to cool down and toggle the switch on/off
• visit service center 
• check breaker for blown fuse and replace