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Boiler Not Level

Boiler Not Level – Improper condensate drainage

Viessmann · Vitodens 200-W B2HA Boiler

What does Boiler Not Level mean?

The boiler must be installed perfectly level, both vertically and horizontally, to ensure proper draining of acidic condensate. If the boiler is not level, condensate can accumulate and cause operational issues or corrosion.

Common Causes

  • Improper installation
  • Shifting of the boiler mounting or stand over time
  • Obstruction in the condensate drain line
  • Installation not verified with a bubble level

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Visually inspect the boiler's installation to check for any obvious tilting or unevenness.

  2. 2

    If possible, use a level tool on top of the boiler to verify its vertical and horizontal alignment.

  3. 3

    Ensure the condensate drain pipe has a continuous downward slope and is free of blockages.

  4. 4

    If the boiler is found to be unlevel, contact a qualified installer to adjust the leveling screws and correct the installation.

Browse all codes in this manual (8)
Verified technical data. Last updated: April 2026

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Source: Viessmann Vitodens 200-W B2HA Boiler
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