Safety thermostat activated High

Potterton Safety thermostat activated Fault Code

Q: What does the Potterton Safety thermostat activated fault code mean?

Your boiler has switched itself off because it got too hot, which is a built-in safety feature to prevent damage or dangerous overheating.

Q: How much does it cost to fix Potterton error code Safety thermostat activated?

Typical repair cost for the Potterton Safety thermostat activated fault is £120-250 including labour.

Also written as SAFETYTHERMOSTATACTIVATED — same fault.

The Potterton Safety thermostat activated fault code means: your boiler has switched itself off because it got too hot, which is a built-in safety feature to prevent damage or dangerous overheating.. It appears on 1 Potterton model in our database.

Technical description: Press reset button on safety thermostat. If regular resetting is required, or appliance still does not operate, investigation is necessary. Check for continuity (more than 1.5 ohm).

Typical repair cost £120-250 (including labour)

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 Safety thermostat activated fault code

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

Performa 24 Repair: £120-250

Source

Potterton Safety thermostat activated 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