Common troubleshooting steps include:

• Low cooling: Check for a dirty air filter or incorrect thermostat settings, and clean or adjust as needed.
• No power: Inspect the plug, circuit breaker, or fuse.
• Water leakage: Ensure the unit is properly tilted for drainage and check for blocked drain holes.
• Strange noises: Look for loose screws, fan obstructions, or worn parts.
  Address these basic issues to restore the unit’s normal operation.