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

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

E14 High

Halstead E14 Fault Code

Q: What does the Halstead E14 fault code mean?

Your boiler is struggling because it cannot balance the temperature between the water leaving and returning to the unit, suggesting a potential flow restriction or sensor disagreement.

The Halstead E14 fault code means: your boiler is struggling because it cannot balance the temperature between the water leaving and returning to the unit, suggesting a potential flow restriction or sensor disagreement.. It appears on 6 Halstead models in our database.

Technical description: Differential between flow and return thermistors 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.

Find a Gas Safe engineer

Search the official register for a qualified engineer in your area.

Gas Safe Register →

Halstead models that show the E14 fault code

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

Source

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

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