BoilerFaultCodesBaxi H.02.07 Fault Code
Also written as H0207 — same fault.
The Baxi H.02.07 fault code means: your boiler has detected that the water pressure in your radiators is too low for the system to work safely, so it has turned itself off.. It appears on 7 Baxi models in our database.
Technical description: Low pressure in heating circuit — water filling required
DIY fix possible
Locate the flexible filling loop under the boiler with the two blue-handled taps.Slowly open both taps one at a time until you hear water flowing.Watch the pressure gauge on the front of the boiler until it reaches between 1.0 and 1.5 bar, then close both taps fully.
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Baxi models that show the H.02.07 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Baxi H.02.07 fault code information on this page is sourced and cross-checked against the official Baxi service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026