BoilerFaultCodesWhat the manual says
Manufacturer manualburner on (NORMAL OPERATING STATE FOR CH MODE)
From this model's manual
Verified against the Glow Worm Ultracom 24cx 30cx installation & service manual, page 52.
What causes this fault?
This is a status code rather than a fault, appearing when you turn on a hot tap or start a shower. It indicates that the boiler has successfully detected a demand for water and has lit the burner to begin the heating process. You will see this code briefly every time the boiler is actively working to provide hot water to your home.
DIY fix possible
This fault may be fixable without an engineer. Check your manual first.
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