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Exhaust Gas Values

Exhaust gas values not in order; CO content too high

Junkers · Cerapur 9000i Boiler

What does Exhaust Gas Values mean?

The measured exhaust gas values are not within the acceptable range, and the carbon monoxide (CO) content is too high. This is a serious safety concern.

Common Causes

  • Incorrect gas type
  • Incorrect gas/air ratio
  • Issues with the exhaust system (e.g., blockage)
  • Faulty gas valve or burner

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the gas type to ensure it's correctly set.

  2. 2

    Check the gas/air ratio and correct if necessary (critical, requires technician).

  3. 3

    Inspect the exhaust system for blockages or damage and clean/repair if necessary.

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 40)Search more codes in this manual