BoilerFaultCodesPotterton Temperature Control Fault Code
Also written as TEMPERATURECONTROL — same fault.
The Potterton Temperature Control fault code means: your boiler has sensed a temperature issue and has likely locked out to prevent overheating.. It appears on 1 Potterton model in our database.
Technical description: Neon indicators for Central Heating and Hot Water (0 to 4 bar gauge reference)
What causes the Potterton Temperature Control fault?
This fault occurs when the boiler's internal sensors detect that the water temperature has risen too quickly or exceeded safe limits. The most common reason is a lack of water circulation, often caused by a failing pump or a blockage in the system preventing heat from being moved away from the burner.
This issue frequently appears during the first cold spell of autumn when the pump may have seized after being inactive throughout the summer.
DIY fix possible
Turn the selector switch to the reset position for five seconds and then back to your desired settingCheck that your radiator valves are open and not blockedEnsure the system pressure on the gauge is between 1 and 1.5 bar
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Gas Safe Register →Potterton models that show the Temperature Control fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Potterton Temperature Control 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