EL
ErrorLib
Brands
||
  1. Home
  2. Fronius
  3. Perfect Charging
  4. 201
About·Privacy·Terms

ErrorLib — Industrial Fault Code Library

Disclaimer: ErrorLib is an independent technical reference tool. While we aim for accuracy, always verify with the manufacturer’s official service manuals before performing maintenance on industrial equipment. ErrorLib is not affiliated with the brands listed.

201

TagID Nominal Voltage Not Supported

Fronius · Perfect Charging

What does 201 mean?

The nominal voltage of the battery, as read from its TagID module, is not supported by the battery charger, or a specific charger setting prevents its use. This means the charger cannot safely or effectively charge the battery due to voltage mismatch.

Common Causes

  • The battery's nominal voltage, as reported by TagID, falls outside the charger's specified operating voltage range.
  • A specific charger parameter or charging profile setting is preventing the charging of the detected battery voltage.
  • Erroneous or corrupted nominal voltage data within the battery's TagID module.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Verify the battery's actual nominal voltage by checking its nameplate or specifications.

  2. 2

    Check the charger's settings related to supported battery voltages and adjust the voltage range or charging profile if necessary.

  3. 3

    Inspect the TagID data for correct nominal voltage programming and ensure it corresponds to the physical battery.

Browse all codes in this manual (61)
Verified technical data. Last updated: April 2026

Related Faults

101Gateway CAN Connect Timeout102Gateway No Back-end Connection103Gateway Charger/Registration Mismatch
Source: Fronius Perfect Charging
Open Manual (Page 51)Search more codes in this manual