High Lockout
E14 on Remeha Avanta 18V

Your boiler has detected a problem with the internal temperature sensor that monitors the water leaving the unit, causing the system to shut down for safety.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description

NTC flow sensor error

What causes this fault?

This fault occurs when the boiler's internal computer receives an incorrect or missing signal from the sensor that monitors the heat of the water leaving the unit. The most common reason is that the sensor itself has developed an electrical fault or has become corroded, although loose or damaged wiring between the sensor and the main control board can also be the culprit.

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

E5View →E6View →E12View →

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