Common fixes, in plain English

Vaillant boiler showing F22

F22 on a Vaillant means low water pressure. Most of the time you can fix it yourself in a couple of minutes, free.

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Vaillant boiler showing F28

F28 means the boiler tried to light and could not. Sometimes it is your gas supply, not the boiler.

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Vaillant boiler showing F75

F75 means the pump ran but the boiler saw no pressure change. Common on ecoTEC models, usually an engineer job.

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Worcester Bosch boiler showing EA

EA on a Worcester means no flame was detected. In winter, a frozen condensate pipe is the classic cause and a free fix.

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Baxi boiler showing E119

E119 on a Baxi is low water pressure. Two minutes with the filling loop usually sorts it, free.

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Baxi boiler showing E133

E133 means the gas supply was interrupted or ignition failed. Check the meter and the weather before you pay anyone.

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Ideal boiler showing F1

F1 on an Ideal Logic is low water pressure. The filling loop fix takes two minutes and costs nothing.

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Ideal boiler showing L2

L2 means flame loss: the boiler lit, then lost it, or never lit at all. Check the cheap causes first.

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Boiler works for heating but no hot water

Radiators warm but taps cold usually points one way on a combi: the diverter valve.

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Radiator cold at the top, warm at the bottom

Air in the radiator. Bleeding it is a genuinely easy DIY job: five minutes, one small key.

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Radiator cold at the bottom, warm at the top

Cold at the bottom is sludge, not air. Bleeding will not fix this one.

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Toilet keeps running after flushing

A running toilet wastes serious water. The fix is usually a £10 part and no plumber.

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Dripping tap

One drip a second is about 15 litres a day. The fix is a washer or cartridge that costs less than a coffee.

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Fuse box keeps tripping

The unplug-everything method finds the culprit in twenty minutes. Fixed wiring faults are a different story.

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Washing machine not draining

Nine times out of ten it is the filter, and the filter is behind that little flap you have never opened.

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Wifi keeps dropping

Before you blame the broadband, the fix is usually where the router lives and what it fights with.

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