Emergency
Pressure of 3 or greater on Potterton Performa System HE

Your boiler's internal water pressure has climbed too high, which means the system is under too much strain and needs to be brought back down to normal levels.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Act immediately

Turn off your boiler and stop using gas appliances. Call a Gas Safe engineer now. This fault can be dangerous if ignored.

What the manual says

Manufacturer manual

Indicates a fault. The safety pressure relief valve will operate.

From this model's manual
Verified against the Potterton Potterton Performa System He Boiler Error Codes installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

Engineer required

This is a emergency severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Boiler cover options

Avoid the next call-out bill

A cover plan would handle faults like Pressure of 3 or greater: no call-out fees, no surprise bills.

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