BoilerFaultCodesVokera low water pressure Fault Code
Also written as LOWWATERPRESSURE — same fault.
The Vokera low water pressure fault code means: your boiler has stopped working because the amount of water inside your heating system has dropped below the required level.. It appears on 1 Vokera model in our database.
Technical description: Temporary fault (ON every 0.5-secs)
DIY fix possible
Locate the external filling loop, which is usually a flexible silver hose under the boiler connecting two pipes.Open the small valve(s) on the loop to allow mains water into the heating system.Monitor the pressure gauge on the front of the boiler until the needle reaches the green zone, typically between 1 and 1.5 bar.Close the valve(s) firmly and ensure the flexible hose is disconnected if required by your specific model.
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Vokera models that show the low water pressure fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Vokera low water pressure 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