Worcester 227 fault

Worcester Bosch boiler EA 227 fault code

Here’s the lowdown on Worcester Error 227 fault code. Worcester boilers are one of most installed in the UK so it is likely that you or a Gas Safe registered engineer will have come across this issue.

So, what it is, how it can be prevented, and when it should be addressed by a professional boiler engineer.

What does the Worcester Error 227 mean?

This error code means that a Worcester Bosch boiler failed to detect a flame when it tried to ignite. The safety protocols for your boiler will kick in after about four to five attempts at starting the boiler protecting your boiler and your home. Often during this, they will lock out.

What is the Worcester Error 227?

There are many reasons why your boiler might not detect a flame while trying to ignite. Here are the most common reasons why Worcester bosch boilers will show the EA 227 error code.

The gas supply to the boiler is not working

This is the most common error that can occur on a Worcester Bosch boiler. It could be due to a defective or improperly adjusted gas valve.

Your Gas Safe engineer can determine whether a valve can or must be replaced if one of the more obvious reasons for your boiler not working does not fix the problem.

What does the Worcester 227 Fault mean?

This fault code can be described as “No flame detected” or “No ionization after ignition”.

The EA 227 code is usually displayed after the boiler fails to register a flame for at least four attempts. This ensures that it’s not intermittent.

This indicates that the component responsible to detect a flame is unable to do so or has suffered a fault. This component is known as a flame sensing electro.

Gas Supply

The gas valve is the part responsible for controlling the flow. If it gets stuck, it can cause too little or too many gasses to enter the unit.

You may have had repairs recently and the valve could have been incorrectly adjusted.

Older boilers are more likely to be faulty because of wear and tear. This can prevent it from moving freely.

An engineer can usually correct a gas valve that has been incorrectly installed.

Old boilers may have a way to free a stuck valve. However, it is common to need to replace the part if it becomes stuck again. If the valve is not functioning properly, this will also apply.

Gas valves cost vary by model. However, you can expect to pay between £100 and £300.

Frozen Gas meter

Your external gas meter could be the problem. The gas regulator and the supply of gas to your boiler could be affected by a partially or fully frozen gas meter. If your meter is outside, make sure it is properly insulated and boxed in.

Your Gas Safe Engineer can help you with this. They will also advise you on how to properly insulate your meters to keep it safe from the cold and prevent this problem from happening again.

Blocked Pilot Jet

Even the smallest amount of debris can block the pilot light jet, preventing the flame from developing. A blocked pilot jet could cause a flickering light just before the pilot light goes out. If this is the case, your Gas Safe boiler engineer can clean the tiny jet and reset your error display.

Faulty Flame Sensing Electrode

In order to create a flame, your Worcester boiler must have a working electrode or ignition lead. Sometimes they can be repaired but your Gas Safe Engineer will advise you on what to do. It might even be less expensive to replace them.

It is possible to easily clean a dirty sensor. If the sensor is damaged, however, it can be easily removed and cleaned.

The parts are usually less expensive than £100 so the labour costs for repair will likely be higher.

Moisture leaking into the electricals

The boiler houses many internal electrical components. Even the smallest leak or buildup of moisture can cause damage to these delicate components. If you do find a leak and you are seeing the 227 fault code shut off the water supply to the boiler.

The leak will most likely not be visible from the outside of the unit as may be coming from your heat exchanger. It is best to have your engineer diagnose it.

The PCB (Printed Circuit Board), is the brain of your boiler. It sends messages to every electrical component telling it what to do. This board can cause serious damage if there is even a small leak. Your Gas Safety Engineer can diagnose the problem and recommend which parts should be replaced. It could cost up to £500 for a damaged PCB to be replaced. This will fix your fault code

How do I fix my Worcester Boiler?

This 227 fault code is usually related to the boiler unit and the gas supply. Therefore, it must be legally resolved by a registered Gas Safe Engineer. It is worth checking the status and supply of your mains gas before calling an engineer.

  • To check if other appliances that are gas-fueled work,
  • After you have added credit, make sure your pre-paid gas meter is charged.
  • Ask your supplier about disruptions that may be occurring in the area.

Which Worcester Boilers Use 227 Fault?

Worcester Bosch has many fault codes, but each one is unique. You can use all our Worcester boiler fault code guides to see which issue you have but this one is pretty common.

As it is used across the range of Greenstar boilers, this means that 227 fault code will always appear on a combi boiler or conventional boiler to indicate that there hasn’t been an ignition of a flame or an issue with your gas valve.

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