BoilerFaultCodesWhat the manual says
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From this model's manual
Verified against the Glow Worm/Glow Worm Ultracom2 12sxi installation & service manual, page 55.
What causes this fault?
This is a normal status code rather than a fault, indicating that the boiler has successfully ignited the burner to heat your home or water. It shows that the internal gas valve has opened and the electrodes have created a flame to start the heating process. You do not need to take any action, as this confirms the appliance is operating as intended.
DIY fix possible
This fault may be fixable without an engineer. Check your manual first.
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Related fault codes
All 76 fault codes on the Ultracom sxi
Seeing a different code? Every code this model can display, in one place.