Schneider Electric E004

Brand: Schneider ElectricModel: PLC (Modicon M221 / M241 / M262)Error code: E004

What the Fault Means

Battery low

Likely causes

  • Internal lithium battery exhausted (M241)

Solution and Safe First Checks

  1. Replace CR2032/lithium battery; note: M221 has no battery, uses NVRAM

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

Related Schneider Electric error codes

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