t80 °C Low

Potterton t80 °C Fault Code

Also written as T80C — same fault.

The Potterton t80 °C fault code means: your boiler is displaying its current hot water temperature as part of its normal operating sequence and does not indicate a fault.. 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 DHW. O.K. Scroll to pressure display "P". Press RESET button to scroll display

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Potterton models that show the t80 °C fault code

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

Source

Potterton t80 °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