Error Codes

Error, fault and alarm codes of products - what each code means, its causes and what to do - read from the manufacturers’ manuals, with the manual page each answer comes from.

• CodeSiemens MICROMASTER 420 Error A0920: ADC parameters not set properly

  ADC parameters not set properly The manual's first action is: “Analogue input parameters should not be set to the same value as each other”

• CodeSiemens MICROMASTER 420 Error A0912: Vdc-min controller active

  The DC-link voltage has fallen below the minimum level set by the controller. The manual lists no action for this code.

• CodeSiemens MICROMASTER 420 Error A0911: Vdc-max controller active

  Vdc-max controller is active to limit DC-link voltage. The manual's first action is: “1. Check parameter inverter input voltage 2. Check ramp-down times”

• CodeSiemens MICROMASTER 420 Error A0910: Vdc-max controller deactivated

  The Vdc-max controller has been deactivated because it can't keep the DC-link voltage within limits. The manual's first action is: “Check the following: 1. Input voltage (P0756) lies within range? 2. Load must match I…

• CodeSiemens MICROMASTER 420 Error A0711: CB configuration error

  CB (communication board) reports a configuration error The manual's first action is: “Check CB parameters”

• CodeSiemens MICROMASTER 420 Error A0710: CB communication error

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

• CodeSiemens MICROMASTER 420 Error A0709: CB warning 10

  CB warning 10 indicates a problem with the communication board. The manual's first action is: “See CB user manual”

• CodeSiemens MICROMASTER 420 Error A0708: CB warning 9

  CB warning 9 indicates a problem with the communication board. The manual's first action is: “See CB user manual”

• CodeSiemens MICROMASTER 420 Error A0707: CB warning 8

  CB warning 8 indicates a problem with the communication board. The manual's first action is: “See CB user manual”

• CodeSiemens MICROMASTER 420 Error A0706: CB warning 7

  CB warning 7 indicates a problem with the communication board. The manual's first action is: “See CB user manual”

• CodeSiemens MICROMASTER 420 Error A0705: CB warning 6

  CB warning 6 indicates a problem with the communication board. The manual's first action is: “See CB user manual”

• CodeSiemens MICROMASTER 420 Error A0704: CB warning 5

  CB warning 5 indicates a problem with the communication board. The manual's first action is: “See CB user manual”

• CodeSiemens MICROMASTER 420 Error A0703: CB warning 4

  CB warning 4 indicates a specific issue with the communication board. The manual's first action is: “See CB user manual”

• CodeSiemens MICROMASTER 420 Error A0702: CB warning 3

  CB warning 3 indicates a problem with the communication board. The manual's first action is: “See CB user manual”

• CodeSiemens MICROMASTER 420 Error A0701: CB warning 2

  CB warning 2 indicates a problem with the communication board. The manual's first action is: “See CB user manual”