How much does it cost to fix Vokera error code Green LED Off, Red LED On?

Typical repair cost for the Vokera Green LED Off, Red LED On fault is £100-350 including labour.

Green LED Off, Red LED On High

Vokera Green LED Off, Red LED On Fault Code

Q: What does the Vokera Green LED Off, Red LED On fault code mean?

Your boiler has experienced a safety lockout and has shut itself down to prevent damage.

Also written as GREENLEDOFFREDLEDON — same fault.

The Vokera Green LED Off, Red LED On fault code means: your boiler has experienced a safety lockout and has shut itself down to prevent damage.. It appears on 2 Vokera models in our database.

Technical description: Internal fault (locked-out)

What causes the Vokera Green LED Off, Red LED On fault?

This fault occurs when the boiler’s control board detects a safety issue or a failure to ignite, leading it to shut down the system for protection. The most common reasons include a worn ignition electrode that can no longer spark correctly or an internal electrical failure within the main circuit board. In some cases, a faulty sensor may be sending incorrect temperature readings, causing the boiler to trip its safety limit.

Typical repair cost £100-350 (including labour)

DIY fix possible

Locate the mode selector switch on the front panel.Turn the switch to the 'OFF/RESET' position and wait for 5-10 seconds.Turn the switch back to either 'Hot Water Only' or 'Heating & Hot Water' and wait for the boiler to restart.

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Vokera models that show the Green LED Off, Red LED On fault code

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

Source

Vokera Green LED Off, Red LED On 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