WAIT PELLET THERMOSTAT Low

Grant WAIT PELLET THERMOSTAT Fault Code

Also written as WAITPELLETTHERMOSTAT — same fault.

The Grant WAIT PELLET THERMOSTAT fault code means: your boiler is currently going through its normal cooling-down process after a heating cycle and will be ready to restart shortly.. It appears on 1 Grant model in our database.

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

Technical description: Burner shut-down sequence status (indicated during manual or automatic shut-off).

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 →

Grant models that show the WAIT PELLET THERMOSTAT fault code

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

Source

Grant WAIT PELLET THERMOSTAT 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