Schneider Electric PHF

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

What the Fault Means

Input Phase Loss

Likely causes

  • One phase of 3-phase supply missing; blown fuse; loose connection at L1/L2/L3

Solution and Safe First Checks

  1. Check all three input phases; replace blown fuse; tighten terminal connections

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.