Mitsubishi Electric Error 420

Brand: Mitsubishi ElectricModel: PLC (FX5U / iQ-R / iQ-F Series)Error code: Error 420

What the Fault Means

Project data error

Likely causes

  • Project file corrupted; wrong GOT model in project

Solution and Safe First Checks

  1. Re-transfer project; verify GOT model (GT27xx, GT25xx etc.) in GT Designer3

Safety: do not work inside the panel without isolating the power; if unsure, consult a qualified technician.

Related Mitsubishi Electric error codes

Source: the Zeror.ai industrial fault database and Mitsubishi Electric technical documentation. This page is for information; on critical systems follow the manufacturer's manual and authorised service.

Mitsubishi Electric Error 420 · Zeror.ai