c80 °C Low

Potterton c80 °C Fault Code

Also written as C80C — same fault.

The Potterton c80 °C fault code means: your boiler is simply showing you the current temperature of the water being sent to your radiators, and you can press the reset button to see your system's water pressure instead.. It appears on 1 Potterton model in our database.

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: Indicative flow temperature to CH. O.K. Scroll to pressure display "P". Press RESET button to scroll display

DIY fix possible

Locate the RESET button on the boiler control panelPress the button once to toggle the display away from the temperature readingMonitor the 'P' display to ensure your system pressure is within the recommended range

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Potterton models that show the c80 °C fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Potterton c80 °C fault code information on this page is sourced and cross-checked against the official Potterton service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026