Clicking or ticking noise from the compressor area; compressor attempts to start but shuts off within a few seconds.

Safety: Unplug the cooler before accessing the compressor. Components can be hot and carry mains voltage.

Steps to address compressor clicking:

• Allow cooling: If the compressor is very hot to the touch, leave the unit unplugged for at least 30–60 minutes to cool down.
• Check ventilation and condenser cleanliness: Ensure adequate airflow around the unit and clean the condenser coils.
• Inspect start relay and overload: Remove the compressor terminal cover and examine the relay/overload assembly for burn marks or rattling (shake gently; a rattling relay is often bad).
• Replace relay/overload: Install a new NewAir compressor start relay and overload protector matched to your compressor model.
• Test operation: Reinstall the cover, restore power, and observe whether the compressor starts and runs smoothly without repeated clicking.

Important: If the compressor still fails to start with a new relay/overload, the compressor itself may be locked or internally damaged. Compressor replacement is a sealed system repair and should be performed only by a licensed technician.