How much does it cost to fix Grant error code DHW PUMP indicator FLASHING?

Typical repair cost for the Grant DHW PUMP indicator FLASHING fault is £150-300 including labour.

DHW PUMP indicator FLASHING High

Grant DHW PUMP indicator FLASHING Fault Code

Q: What does the Grant DHW PUMP indicator FLASHING fault code mean?

Your boiler is having trouble communicating with one of its internal temperature sensors, which means it has stopped providing hot water as a safety precaution.

Also written as DHWPUMPINDICATORFLASHING — same fault.

The Grant DHW PUMP indicator FLASHING fault code means: your boiler is having trouble communicating with one of its internal temperature sensors, which means it has stopped providing hot water as a safety precaution.. It appears on 5 Grant models in our database.

Technical description: Indicates either a 'Store' thermistor or PCB fault.

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 DHW PUMP indicator FLASHING fault code

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

Source

Grant DHW PUMP indicator FLASHING 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