8809 Medium

Vokera 8809 Fault Code

The Vokera 8809 fault code means: your boiler's internal sensor is struggling to accurately read the water pressure or temperature, which may cause it to stop working to protect itself.. It appears on 1 Vokera model in our database.

Book a service

This fault should be looked at by a Gas Safe engineer within the next week or two. It may get worse if left.

Technical description: Combined Pressure & Temperature Gauge
Typical repair cost £120-200 (including labour)

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Vokera models that show the 8809 fault code

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

Source

Vokera 8809 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 7 July 2026