What the manual says
Manufacturer manualBoiler in heating mode
Shared across the 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 your thermostat is set to the desired temperatureEnsure your programmer or timer is set to 'On'Wait for the radiators to warm up as this is normal operation
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