What the manual says
Manufacturer manualDelete fault list
From this model's manual
Verified against the Glow Worm Energy7 Combi installation & service manual, page 50.
DIY fix possible
This code appears automatically when the fault history is reset.No action is required if your boiler is currently heating your water and radiators correctly.If you did not initiate a reset, simply monitor the boiler to ensure it continues to operate normally.
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