BoilerFaultCodesWhat the manual says
Manufacturer manualSystem pressure check (example value 1.5 bar). Control display warns if system pressure falls below 0.5 bar.
Shared across the Powermax HE range
This code is shared by the boilers in this range, which use the same control board. It may not be printed in this exact variant’s manual.
DIY fix possible
No action is required as this is a status update, not a fault.If the reading drops below 0.5 bar, you may need to top up the system pressure using the filling loop.Check your user manual for the location of your external filling loop if the pressure falls in the future.
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Related fault codes
All 59 fault codes on the Powermax HE
Seeing a different code? Every code this model can display, in one place.