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°C only display

Temperature display only in °C - Cannot change to °F

Viessmann · Vitodens 200 Boilers

What does °C only display mean?

The boiler's temperature display unit only shows temperatures in Celsius (°C) and cannot be changed to Fahrenheit (°F), specifically when the programming unit is mounted remotely.

Common Causes

  • This is expected behavior when the programming unit is remotely mounted.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Understand that this is a system characteristic when the programming unit is remotely mounted.

  2. 2

    Check if a local display unit is available on the boiler for Fahrenheit display.

  3. 3

    Consult the manual for specific settings related to remote programming unit operation if unit conversion is critical.

Browse all codes in this manual (21)
Verified technical data. Last updated: April 2026

Related Faults

06 / 07Fault 06 or 07 - Insufficient air supply or vent blockage14Fault 14 - Ignition failure or gas supply issue14 (multiple boilers)Fault 14 (Multiple Boilers) - One boiler locks out while others run
Source: Viessmann Vitodens 200 Boilers
Open Manual (Page 8)Search more codes in this manual