BoilerFaultCodesPotterton Lights Off Off Off Fault Code
Also written as LIGHTSOFFOFFOFF — same fault.
The Potterton Lights Off Off Off fault code means: your boiler has no power and appears completely dead, likely due to an issue with the electricity supply or a blown fuse.. It appears on 4 Potterton models in our database.
Technical description: No electrical supply
DIY fix possible
Check if other appliances in your home are working to rule out a general power cutCheck your main consumer unit (fuse box) to see if a circuit breaker has trippedCheck the fused spur switch next to the boiler is turned on and the fuse inside it hasn't blown
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Potterton models that show the Lights Off Off Off fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Potterton Lights Off Off Off fault code information on this page is sourced and cross-checked against the official Potterton service / installation manuals for each affected model.
- Potterton Gold Heat ErP manual (PDF)
- Potterton Promax 15/2 HE Plus manual (PDF)
- Potterton Promax Heat Only manual (PDF)
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026