BoilerFaultCodesGledhill Low pressure safety trip Fault Code
Also written as LOWPRESSURESAFETYTRIP — same fault.
The Gledhill Low pressure safety trip fault code means: your boiler has stopped working because the water pressure inside the system has dropped too low to operate safely.. It appears on 1 Gledhill model in our database.
Technical description: ON : Low pressure safety trip - Press S1 to reset
DIY fix possible
Check the pressure gauge; it is likely below 1.0 bar.Locate the filling loop (braided silver hose) usually under the boiler.Open the valves slowly to top up the water until the gauge reaches 1.5 bar.Close the valves tightly and press the S1 button on the boiler to reset the system.
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Gledhill models that show the Low pressure safety trip fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Gledhill Low pressure safety trip fault code information on this page is sourced and cross-checked against the official Gledhill service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026