Siemens MICROMASTER 420 Error A0506: Inverter Duty Cycle

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

Warning codeA0506

The inverter duty cycle has exceeded allowable temperature limits. The manual's first action is: “Check if duty cycle are within specified limits”

Model
Siemens MICROMASTER 420
Display shows
Inverter Duty Cycle (A0506)
Type
Warning code
Source
Manual p. 72

What A0506 means

Inverter Duty Cycle p. 72

Common causes

  • Heatsink temperature and thermal junction model are outside of allowable range p. 72

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 if duty cycle are within specified limits p. 72

If A0506 is still not resolved

  • Contact your service dealer for assistance. p. 72
    “Check if duty cycle are within specified limits”
Open the manual at page 72 All MICROMASTER 420 error codes Manual details & download

This page summarises what the manufacturer’s manual says about A0506; 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.