BoilerFaultCodesTechnical description
The boiler carries out a control stop (reducing temperature display)
What causes this fault?
This fault occurs when the boiler's internal computer detects a communication error or an illogical sequence of signals during its safety start-up checks. The most common reason is an electronic glitch or a failing control board that can no longer accurately process the data required to run the unit safely.
DIY fix possible
Press the Reset button for two secondsCheck that your external heating controls or room thermostat are calling for heatEnsure the boiler's power supply has not been interrupted
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