Baxi · Duo-tec Combi ErP Boilers
This code indicates that the flue system has reached an excessively high temperature, triggering a safety shutdown. The display shows 'E1' alternating with '30'. This can be caused by restricted exhaust flow.
Click steps to track your progress.
Turn the selector switch fully anticlockwise to the 'Reset' position and hold for 5 seconds.
Check the flue terminal outside the property for any obstructions (e.g., leaves, bird nests).
Ensure the fan is operating by listening for it when the boiler attempts to ignite.
If the error persists, contact a qualified heating engineer to inspect the flue and fan system.