Blown Fuse

What does LED_FUSE_DEFECTIVE_ON mean?

A red LED next to a fuse on the KUKA KRC4 Sunrise Cabinet Med Controller is ON, indicating that the fuse is defective (blown). This disrupts power supply to the circuit protected by the specific fuse, causing a loss of function for that component or module.

• Overcurrent condition in the protected circuit, possibly due to a short circuit or overload.
• Component failure in the protected circuit drawing excessive current.
• Aging or incorrect fuse rating for the application.

Click steps to track your progress.

1. 1

   Identify the specific fuse indicated by the illuminated red LED.

2. 2

   Determine the cause of the overcurrent or short circuit in the affected circuit.

3. 3

   Check for short circuits or ground faults in the wiring and connected components (e.g., smartPAD, KPC, CCU_SR inputs/outputs, PDS, fan, external power supply, DC/DC converter, main power supply connection).

4. 4

   Replace the defective fuse with a new fuse of the exact specified value (voltage and current rating, e.g., 32 V/2 A, 10 A slow-blowing / 250 V AC) as printed on the module or specified in the instructions.