High
E50 on Baxi Suprima 40

Your boiler has detected a problem with the sensor that monitors your hot water temperature, meaning it cannot heat water safely or accurately.

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

Hot water NTC (Negative Temperature Coefficient) error

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

E20View →E28View →

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