Fuse blown error

What does 2420H mean?

A fuse within the module or its associated circuitry has blown. This error indicates a potential overcurrent event or short circuit affecting the module's power supply, and the "Fuse Blown" setting is configured to stop. If the "Direct change setting" is enabled, the system might continue operation without stopping, but the error itself will persist.

• The "CPU Module Operation Setting at Error Detected Fuse Blown" parameter is set to "Stop".
• An overcurrent or short circuit was detected in the module or its power supply.
• A module was physically removed or experienced a failure during operation while "Direct change setting" was enabled.

Click steps to track your progress.

1. 1

   Verify the "Direct change setting" parameter at [Parameter] -> Module model name -> [CPU Parameter] -> "RAS Setting" -> "Online module change setting".

2. 2

   Check the "CPU Module Operation Setting at Error Detected Fuse Blown" parameter setting.

3. 3

   Before removing a module, ensure the external power supply input to the module is shut off.