How much does it cost to fix Grant error code 47?

Typical repair cost for the Grant 47 fault is £150-250 including labour.

47 High

Grant 47 Fault Code

Q: What does the Grant 47 fault code mean?

Your boiler has stopped working because one of its internal temperature sensors is not sending a clear signal, preventing it from safely heating your home.

The Grant 47 fault code means: your boiler has stopped working because one of its internal temperature sensors is not sending a clear signal, preventing it from safely heating your home.. It appears on 1 Grant model in our database.

Technical description: Probe Fault

Typical repair cost £150-250 (including labour)

Engineer required

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

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Grant models that show the 47 fault code

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

Spira Repair: £150-250

Source

Grant 47 fault code information on this page is sourced and cross-checked against the official Grant service / installation manuals for each affected model.

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