BoilerFaultCodesRemeha A02.06 Fault Code
Also written as A0206 — same fault.
The Remeha A02.06 fault code means: your boiler has detected that the water pressure inside your heating system has dropped too low, which prevents it from working correctly.. It appears on 1 Remeha model in our database.
Technical description: Water Press Warning: Water Pressure Warning active
DIY fix possible
Locate the external filling loop, which is usually a flexible silver hose connected to two valves under the boiler.Open the valves slowly to allow mains water into the system until the pressure gauge on the boiler front reads between 1.0 and 1.5 bar.Close both valves tightly to prevent over-pressurisation.
Find a Gas Safe engineer
Search the official register for a qualified engineer in your area.
Gas Safe Register →Avoid the next call-out bill
A cover plan would handle faults like A02.06: no call-out fees, no surprise bills.
Affiliate links. We may earn a commission at no extra cost to you.
Remeha models that show the A02.06 fault code
Click a model for the full fault code list and model-specific repair notes.
Source
Remeha A02.06 fault code information on this page is sourced and cross-checked against the official Remeha service / installation manuals for each affected model.
Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026