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358

Code 358 - Flow temperature sensor defective (short circuit)

Junkers · Cerapur 9000i Boiler

What does 358 mean?

The flow temperature sensor has a short circuit, causing incorrect temperature readings. This is a blocking fault.

Common Causes

  • Short circuit in the flow temperature sensor
  • Damaged connection cable to the sensor

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Disconnect the cable from the flow temperature sensor.

  2. 2

    Check the temperature sensor and its connection cable for any signs of a short circuit.

  3. 3

    If a defect is confirmed, replace the temperature sensor.

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 39)Search more codes in this manual