Grant Boiler controls Fault Code
Also written as BOILERCONTROLS — same fault.
The Grant Boiler controls fault code means: your boiler appears to have no power reaching the control panel, meaning the system is switched off or disconnected from the electricity supply.. It appears on 1 Grant model in our database.
Technical description: Check boiler on/off switch is set to on – check that power indicator on and control panel is lit
DIY fix possible
Ensure the main boiler ON/OFF switch is set to the ON position.Check your home's consumer unit (fuse box) to see if a circuit breaker has tripped.Verify that the fused spur switch located near the boiler is turned on and the fuse hasn't blown.
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Gas Safe Register →Grant models that show the Boiler controls fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Grant Boiler controls 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