Three flashing red LEDs - Internal electronic issue (MSA 120 C)

What does Three flashing red LEDs (MSA 120 C) mean?

This indicates an internal electronic problem with the MSA 120 C tool. The unit should be opened for inspection.

• Faulty electronic control unit
• Internal wiring problems
• Defective electronic components

Click steps to track your progress.

1. 1

   Open the MSA 120 C unit for visual inspection and diagnosis.

2. 2

   Check all internal wiring and connectors for any signs of damage or looseness.

3. 3

   Examine the electronic control board for any visible faults.

4. 4

   The electronic control unit may need to be replaced.