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FAULT PRESENT

FAULT PRESENT - General fault indication

Junkers · Cerapur 9000i Boiler

What does FAULT PRESENT mean?

The boiler's display shows 'FAULT PRESENT', indicating a general issue with the device. This could be either a blocking fault, which allows the system to restart automatically after the issue is resolved, or an interlocking fault, which requires a manual reset to restart.

Common Causes

  • Blocking interference (B class)
  • Interlocking interference (V class)
  • Non-blocking interference (R class)

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the specific error code displayed (if any) to pinpoint the exact problem.

  2. 2

    For interlocking faults, press the 'b' and 'd' buttons on the display at the same time for 3 seconds to reset the fault.

  3. 3

    If the fault persists or reoccurs, contact a qualified service technician for diagnosis and repair.

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

Related Faults

0.9 BAR0.9 BAR — Low operating pressure101Code 101 - Mains voltage lower than allowed1019Code 1019 - Flame formation after burner switches off
Source: Junkers Cerapur 9000i Boiler
Open Manual (Page 36)Search more codes in this manual