Unit cycles on and off very frequently (short cycling), with only brief run times.

Safety: Unplug the cooler before moving or opening panels.

Steps:

• Improve ventilation: Ensure adequate clearance around the cooler and clean the condenser coil to reduce compressor temperature.
• Check ambient temperature: Avoid placing the cooler in very hot or very cold environments, which can cause erratic cycling.
• Inspect thermistor placement: Verify the cabinet thermistor is mounted where the manufacturer intended, not touching the evaporator directly unless designed that way.
• Monitor compressor temperature: If the compressor becomes extremely hot and shuts off quickly, the overload may be tripping. Clean condenser, verify fan operation, and consider professional evaluation.
• Replace thermistor or control board: If environmental and mechanical issues are ruled out, replace the cabinet thermistor. If short cycling persists, the main control board may need replacement.