Vokera JP6 Fault Code
The Vokera JP6 fault code means: your boiler's setting that keeps a small amount of warm water ready for immediate use has been accidentally disabled or the internal connection responsible for this feature has come loose.. It appears on 3 Vokera models in our database.
Technical description: Hot Water Preheat Function jumper
Engineer required
This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Vokera models that show the JP6 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Vokera JP6 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