error code 370-320

The error codes 370-320 and 240 on the Cutera Excel HR typically indicate issues related to the cooling system, which is critical for the laser's proper functioning.

Here’s what might be happening:

1. Error 370-320: Cooling System Failure

• Error 370-320 typically points to a cooling failure. If you’ve recently changed the heat exchange unit (or cooling components), it could be an indication that something wasn’t reconnected properly or the system isn’t receiving adequate cooling.
• Possible causes:
  • The coolant system might not be fully charged or could have air bubbles.
  • There might be a blockage or poor connection in the cooling pipes or hoses.
  • Sensors connected to the cooling system could be misaligned or malfunctioning.

2. Error 240: Cooling System Warning

• Error 240 often refers to a general cooling system issue, indicating that the laser is not cooling properly.
• If you’re able to temporarily resolve it by unplugging the system, this suggests the unit may be going into a thermal shutdown mode because the temperature exceeds safe operating limits.

Troubleshooting Steps:

1. Check Cooling Connections:

   • After replacing the heat exchange, double-check that all hoses and connections are securely in place and not leaking.
   • Ensure that the cooling fans are working correctly, and there are no obstructions preventing airflow.

2. Check the Coolant Level:

   • If the coolant has been drained during the heat exchange replacement, ensure it’s filled to the proper level, with no air pockets in the system.
   • Some systems require special coolant; using the wrong fluid could also cause issues.

3. Verify Temperature Sensors:

   • Check the temperature sensors to ensure they are working properly. If the sensor has come loose or is malfunctioning, it may falsely indicate an overheating condition.

4. Inspect the Laser Head and Cooling Pads:

   • If the cooling pads on the laser handpiece or head are dirty or obstructed, this could cause the system to overheat. Clean or replace them as necessary.

5. Power Cycle:

   • After performing the checks, try a power cycle of the machine (unplug, wait a few minutes, then plug it back in) to reset the system and clear any temporary errors.