BoilerFaultCodesGlow-worm d.69 Fault Code
Also written as D69 — same fault.
The Glow-worm d.69 fault code means: your boiler is struggling to light because it has failed to ignite twice in a row, meaning it has currently stopped trying to provide heat to ensure safety.. It appears on 11 Glow-worm models in our database.
Technical description: Number of unsuccessful ignitions at 2nd attempt
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
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Glow-worm models that show the d.69 fault code
Click a model for the full fault code list and model-specific repair notes.
- Compact Repair: £120-250
- Easicom 24 Repair: £120-250
- Easicom 28 Repair: £120-250
- Energy7 Combi Repair: £120-250
- Flexicom 24c / 28c Repair: £120-250
- MicraCom Repair: £120-250
- Sustain 12s Repair: £120-250
- Sustain 15s Repair: £120-250
- Sustain 18s Repair: £120-250
- Ultimate 3 25R Repair: £120-250
- Ultimate3 Combi Repair: £120-250
Source
Glow-worm d.69 fault code information on this page is sourced and cross-checked against the official Glow-worm service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 31 August 2026