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229, 217

Code 229, 217 - Wrong or unrecognized coding plug (KIM)

Junkers · Cerapur 9000i Boiler

What does 229, 217 mean?

The coding plug (KIM) installed is either incorrect or not being recognized by the boiler's system. This is an interlocking fault.

Common Causes

  • Wrong coding plug installed
  • Coding plug not fully or correctly inserted
  • Defective coding plug

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the coding plug (KIM) to ensure it is the correct one for your device.

  2. 2

    Plug in the coding plug correctly and firmly.

  3. 3

    If the issue persists, replace the coding plug.

Browse all codes in this manual (48)
Verified technical data. Last updated: April 2026

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Source: Junkers Cerapur 9000i Boiler
Open Manual (Page 37)Search more codes in this manual