How much does it cost to fix Alpha error code E14?

Typical repair cost for the Alpha E14 fault is £150-300 including labour.

E14 High

Alpha E14 Fault Code

Q: What does the Alpha E14 fault code mean?

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.

The Alpha E14 fault code means: 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.. It appears on 3 Alpha models in our database.

Technical description: Temperature difference between flow and return NTCs too high

Typical repair cost £150-300 (including labour)

Engineer required

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

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Alpha models that show the E14 fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Alpha E14 fault code information on this page is sourced and cross-checked against the official Alpha service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026