Siemens MICROMASTER 420 Error A0710: CB communication error

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

Warning codeA0710

CB communication error indicates lost communication with the communication board. The manual's first action is: “Check CB hardware”

Model
Siemens MICROMASTER 420
Display shows
CB communication error (A0710)
Type
Warning code
Source
Manual p. 73

What A0710 means

CB communication error p. 73

Common causes

  • Communication with CB (communication board) is lost p. 73

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

What to do

  1. Check CB hardware p. 73

If A0710 is still not resolved

The manual gives no further instruction for this code. Open the code table in the PDF or contact Siemens service.

Open the manual at page 73 All MICROMASTER 420 error codes Manual details & download

This page summarises what the manufacturer’s manual says about A0710; 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.