What the manual says
Manufacturer manualDHW (Domestic Hot Water) mode enabled (0: Disabled, 1: Enabled)
Shared across the 224 Combi 2 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
Check if the display shows 'AM001' after a settings change or power cut.If hot water is working as expected, no action is required.If you wish to disable hot water, consult the user manual to change the DHW parameter settings.
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All 36 fault codes on the 224 Combi 2
Seeing a different code? Every code this model can display, in one place.