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

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

Before you service the product, read the safety instructions in the manual p. 6.

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.