High
E14 on Alpha Cd13r

Your boiler has detected that the water leaving the unit is significantly hotter than the water returning, suggesting a possible blockage or a pump that isn't moving water efficiently.

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

Temperature difference between flow and return NTCs too high

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

E06View →

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