Siemens MICROMASTER 420 Error F0004: Inverter Over-temperature

Siemens MICROMASTER 420 inverter · taken from the manufacturer’s manual, pages cited

Fault codeF0004

The inverter has detected an over-temperature condition. The manual's first action is: “Check the following: 1. Fan must turn when inverter is running”

Model
Siemens MICROMASTER 420
Display shows
Inverter Over-temperature (F0004)
Type
Fault code
Source
Manual p. 70

What F0004 means

Inverter Over-temperature p. 70

Common causes

  • Ambient temperature outside of limits p. 70
  • Fan failure p. 70

Safety warnings — read before you start

  • DANGERDANGER. indicates an immiently hazardous situation which, if not avoided, will result in death or serious injury. p. 6
  • WARNINGWARNING. indicates a potentially hazardous situation which, if not avoided, could result indeath or serious injury. p. 6
  • CAUTIONCAUTION. used with the safety alert symbol indicates a potentially hazardous situationwhich, i f not avoided, may result in minor or moderate injury. p. 6

What to do

  1. Check the following: 1. Fan must turn when inverter is running p. 70
  2. 2. Pulse frequency must be set to default value p. 70

If F0004 is still not resolved

  • Contact your service dealer for assistance. p. 70
    “Check the following: 1. Fan must turn when inverter is running”
Open the manual at page 70 All MICROMASTER 420 error codes Manual details & download

This page summarises what the manufacturer’s manual says about F0004; 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 Siemens. Found a mistake? Report an error.