What the manual says
Manufacturer manualWater pressure is to low (<1,0 bar), flashing FILL will alternate with indication of water pressure, boiler power of 50% is possible. The installation needs to be topped up.
DIY fix possible
Locate the filling loop (usually a silver flexible hose) underneath or near the boiler.Slowly open the valve(s) to allow water into the system while watching the pressure display.Close the valves firmly once the pressure reaches between 1.2 and 1.5 bar.
Avoid the next call-out bill
A cover plan would handle faults like FILL (flashing): no call-out fees, no surprise bills.
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Related fault codes
All 33 fault codes on the A200
Seeing a different code? Every code this model can display, in one place.