BoilerFaultCodesGledhill E1 Fault Code
The Gledhill E1 fault code means: your boiler has detected an electrical fault with one of its internal sensors or its wiring, which means it cannot accurately monitor temperatures and has stopped working for safety.. It appears on 1 Gledhill model in our database.
Technical description: sensor or cable shorted
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Gledhill models that show the E1 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Gledhill E1 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