Red LED illuminated High

Vokera Red LED illuminated Fault Code

Also written as REDLEDILLUMINATED — same fault.

The Vokera Red LED illuminated fault code means: your boiler has stopped working because the water pressure is too low for the system to run safely.. It appears on 1 Vokera model in our database.

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description: The system needs re-pressurising (check pressure gauge)

What causes the Vokera Red LED illuminated fault?

This fault occurs when the internal water pressure drops below the minimum level required for the boiler to operate safely. The most common reasons are a slow leak hidden somewhere in your radiator system or air being released through a safety valve.

This issue often occurs in autumn when the heating is turned on for the first time after summer, as air pockets and thermal expansion can cause the pressure to fluctuate.

Typical repair cost £0-80 (including labour)

DIY fix possible

Locate the filling loop (the silver flexible hose) underneath or near the boiler.Slowly open the one or two taps/valves on the filling loop until you hear water entering the system.Watch the pressure gauge on the front of the boiler and close the taps once the needle reaches between 1 and 1.5 bar.Restart or reset the boiler by turning the mode selector switch to 'OFF/RESET' and then back to heating/hot water.

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Vokera models that show the Red LED illuminated fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Vokera Red LED illuminated fault code information on this page is sourced and cross-checked against the official Vokera service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026