Low Information
88:0 on Viessmann Vitodens 300-W

Your boiler is confirming it is set to show temperatures in Celsius, which is a normal setting rather than a breakdown.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

Technical description

Temperature display in °Celsius

What causes this fault?

This code appears when the boiler's internal settings have been adjusted to display temperatures in Celsius rather than Fahrenheit. It typically occurs after a manual setting change in the menu or following a system reset that reverted the display to its factory default unit of measurement.

DIY fix possible

Navigate to the main display menuAcknowledge the notification by pressing 'OK' or the return arrowRest the boiler if the display remains stuck on this status screen

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Related fault codes

88:1View →

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