H.02.07
Baxi fault code
Baxi H.02.07: low pressure in heating circuit (permanent)
You can usually fix this
Baxi describes H.02.07 on Baxi Combi 2 and System 2 (200, 400, 600, 800, Assure 500) boilers as: low pressure in heating circuit (permanent).
Recommended pressure when cold for Baxi boilers: 1.0 to 2.0 bar.
What you can safely do
- Let the system cool and read the pressure gauge.
- Baxi says that below 1.0 bar you need to repressurise. Top up through the filling loop to between 1.0 and 2.0 bar, as your user guide describes.
- Close the filling loop fully.
Call a Gas Safe engineer if
- The pressure keeps dropping.
- You can see water leaking.
Find a Gas Safe engineer near you
Opens the official Gas Safe Register search.
Applies to: Baxi Combi 2 and System 2 (200, 400, 600, 800, Assure 500). Codes can differ between models, so check your manual.