Medium Lockout
E06 on Potterton Gold Combi HE

Your boiler is having trouble measuring the temperature of your hot water, which usually means it won't be able to provide consistent heat for your taps and showers.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Book a service

This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.

Technical description

Domestic hot water NTC sensor fault

What causes this fault?

This fault occurs when the internal sensor responsible for monitoring your hot water temperature has failed or is sending an incorrect signal to the control board. The most common reason is that the sensor has simply reached the end of its life due to constant heat cycles, or the electrical connection to it has become loose or corroded. As a result, the boiler stops heating water to prevent it from becoming dangerously hot.

Engineer required

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

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Related fault codes

E05View →E02View →E20View →

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