What does the Potterton E110 fault code mean?

Your boiler has shut down because it has detected an unsafe increase in temperature and has triggered a safety cut-out to prevent damage.

How much does it cost to fix Potterton error code E110?

Typical repair cost for the Potterton E110 fault is £90-250 including labour.

Can I fix Potterton fault code E110 myself?

Check that your radiator valves and any zone valves are fully open to allow water to circulate.

Potterton E110 Fault Code: What It Means & How to Fix It

Technical description

Safety Thermostat Operated (Overheat of the primary water)

What causes this fault?

This fault occurs when the water inside the boiler reaches an unsafe temperature, forcing a safety switch to trip and shut the system down. The most common reasons are a lack of water flow caused by a failing pump, a blockage in the pipework, or a buildup of air within the heat exchanger.

This issue often appears when the heating is turned back on after summer, as pump components can seize up during long periods of inactivity.

Engineer required

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

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Related fault codes

E160View →E125View →

Your boiler has shut down because it has detected an unsafe increase in temperature and has triggered a safety cut-out to prevent damage.

Technical description

What causes this fault?

Engineer required

Related fault codes

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