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This page contains the information required to help repair and diagnose the fault codes being shown on the boiler display. The following table will take you through the fault finding sequence for rectifying a Worcester Bosch boiler with this fault code E2 and fault indicator LED are flashing Then Flow temperature NTC sensor defective
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An E2 error code indicates a stuck pump. This happens when the drain filter is clogged with dirt. You need to remove the lower basket and remove the filter. Make sure there is no debris in the filter housing and / or on the underside of the machine. The error will most likely go away.
Sep 08, 2020 · The boiler is a closed vessel, where the water is stored. Hot gases are formed by burning fuel in the furnace. These gases are made to come in contact with the water vessel, the point where the heat transfer takes place between the steam and water. Thus, the boilers basic principle is to convert water into steam with heat energy.
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The E02 appears when: The temperature of supply (3) and return (4) is the same; The temperature between supply (3) and return (4) is different; There is no ignition, although there is gas, or there is no gas has in the boiler.