How much does it cost to fix Grant error code GK200?

Typical repair cost for the Grant GK200 fault is £150-300 including labour.

GK200 High

Grant GK200 Fault Code

Q: What does the Grant GK200 fault code mean?

Your boiler is failing to light the burner because it is struggling to initiate the start-up sequence.

The Grant GK200 fault code means: your boiler is failing to light the burner because it is struggling to initiate the start-up sequence.. It appears on 1 Grant model in our database.

Technical description: Starter kit - standard

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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Grant models that show the GK200 fault code

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

Vortex Repair: £150-300

Source

Grant GK200 fault code information on this page is sourced and cross-checked against the official Grant service / installation manuals for each affected model.

Grant Vortex manual (PDF)

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026