Emergency
PELLET FEED TUBE STAT TRIPPED on Grant Spira

Your boiler has detected heat moving in the wrong direction through the pellet fuel system, which has triggered a safety shut-off to prevent fire risk.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed

Act immediately

Turn off your boiler and stop using gas appliances. Call a Gas Safe engineer now. This fault can be dangerous if ignored.

What the manual says

Manufacturer manual

The pellet feed tube (burn back) thermostat has activated. Possible causes include a damaged delivery hose, overflowing ash pan, incorrect combustion chamber draught, blocked condensate trap, or inadequate room ventilation.

From this model's manual
Verified against the Grant/Grant Spira installation & service manual.
Plain-English guidance below. Severity, DIY steps, costs and parts are our interpretation to help you act, not text from the manual.

Engineer required

This is a emergency severity fault. Stop using the boiler and call a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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All 25 fault codes on the Spira

Seeing a different code? Every code this model can display, in one place.

031314152629344041424547AIR PRESSURE ERRORBLANK DISPLAY SCREENBOILER OVERHEAT STAT TRIPPEDBURNER FIRING 100%FAILED PELLET LIGHTINGH2oPROBE FAULTSERVICESERVO MOTOR BLOCKEDSETWAIT BOILER THERMOSTATWAIT PELLET THERMOSTAT

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