GE Fuji AF-300 Mini™ Error OH4: Motor overheated

GE Fuji AF-300 Mini Drive · taken from the manufacturer’s manual, pages cited

Alarm codeOH4

Motor overheated, a PTC thermistor input stops the motor for motor protection. A PTC thermistor is connected between terminals [C1] and [1], and a 1-kΩ external resistor is connected between terminals [3] and [C1]. The manual's first action is: “OH4”

Model
GE Fuji AF-300 Mini™
Display shows
Motor overheated (OH4)
Type
Alarm code
Source
Manual p. 76

What OH4 means

Motor overheated p. 76

Common causes

  • Motor overheated p. 76
  • A PTC thermistor input stops the motor for motor protection. A PTC thermistor is connected between terminals [C1] and [1], and a 1-kΩ external resistor is connected between terminals [3] and [C1]. p. 76

What to do

  1. OH4 p. 76

Before you service the product, read the safety instructions in the manual p. 4.

If OH4 is still not resolved

  • Contact a qualified electrician for wiring p. 5
    “Wiring must only be performed only by a qualified electrician.”
  • Check that power is off before wiring p. 24
    “Check that the power is turned off before proceeding with any wiring Failure to do so may result in electric shock.”
Open the manual at page 76 All AF-300 Mini™ error codes Manual details & download

This page summarises what the manufacturer’s manual says about OH4; each statement links to the page it comes from, and quoted lines are copied word for word. It is not a substitute for the manual or for a qualified installer. ManualLib is not affiliated with GE Fuji. Found a mistake? Report an error.