Schneider Electric OHF

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

What the Fault Means

Drive Overheat Fault

Likely causes

  • Ambient temperature too high; cooling fan blocked; duty cycle too heavy

Solution and Safe First Checks

  1. Clean ventilation; check fan; reduce switching frequency; derate or upgrade drive

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.