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Last updated: 7th June, 2024


Worcester Boiler Fault 227

Worcester Boiler Fault 227

Key takeaways

  • The fault 227 indicates a failure to detect a flame during ignition.
  • Immediate action is required to resolve fault 227 for boiler safety and functionality.
  • Professional assessment is often necessary to ensure a correct and safe resolution.

Boiler systems utilise error codes as an internal diagnostic tool. They offer a swift indication of any irregularities or issues within the system's operation.

Encountering a fault code on your Worcester boiler can be disconcerting, especially when central heating or hot water is affected. The Worcester boiler fault 227 is one such error that can cause inconvenience in your household. 

This fault code signifies that the boiler has failed to detect a flame multiple times during its ignition sequence. When the boiler attempts to ignite and does not detect a flame, it will try several times before locking out for safety reasons.

Understanding what each fault code means is crucial in order to take the appropriate measures. Error 227, specifically, indicates the absence of a flame, suggesting that the boiler's attempt to start has been unsuccessful after a number of retries. 

This interruption in service prompts some key considerations, such as the viability of a DIY fix versus the need for professional intervention. The reliability of your boiler is paramount; therefore, addressing fault codes quickly and correctly is essential to the well-being of your home's heating system.

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What Is a Boiler Error Code?

Boiler systems utilise error codes as an internal diagnostic tool. They offer a swift indication of any irregularities or issues within the system's operation.

Explain What Boiler Error Codes Are in General

Error codes are specific alphanumeric codes displayed on a boiler's panel or interface. When a boiler's internal sensors or microprocessors detect a fault, they generate an error code, which usually indicates the nature or location of the problem. These codes help in identifying issues ranging from minor sensor faults to critical system failures.

  • Status Monitoring: Continuous monitoring of the boiler's status allows for immediate error code display upon detecting a fault.

  • Fault Codes Variety: Each code corresponds to a different type of issue, such as ignition failures, pressure drops, or temperature irregularities.

Importance of Understanding Error Codes for Boiler Maintenance

Comprehension of boiler error codes is paramount for effective maintenance and service. It enables homeowners and technicians to:

  • Prompt Response: Quickly ascertain the nature of a problem, potentially avoiding more serious damage to the system.

  • Boiler Service Efficiency: Streamline the boiler service process by preparing the appropriate tools or parts for repair based on the identified error code.

  • Maintenance Strategy: Inform maintenance strategies to prevent future errors, as some codes can suggest underlying issues that require preventative care.

Recognising fault codes is the first step in keeping a boiler running optimally. Error codes are intended to facilitate maintenance; however, they are not a replacement for professional boiler service, which ensures that a boiler runs safely and efficiently.

What Does the Worcester Boiler Fault 227 Mean?

In the context of Worcester boilers, the fault code 227 is more than a mere number; it represents a specific flame detection error that necessitates immediate attention.

Detailed Description of the Specific Error Code

The 227 code, or EA fault code, appears when the boiler's control system has made multiple attempts to ignite the burner, but no flame has been detected. Essentially, the system expects to sense a flame via the flame sensing electrode shortly after ignition: when this doesn't happen, it raises an alert. To the engineer's eye, this is more than a glitch; it's an absence of proof that the burners are operational.

Possible Reasons Why This Error Code Appears

Several issues could trigger this error, each linked to factors that disrupt normal ignition sequences:

  1. Gas Supply Troubles: It's fundamental, but if the gas supply is compromised – think a frozen gas meter in winter or a closed gas valve – the flame won't ignite.

  2. Faulty Gas Valve: A malfunctioning gas valve can't deliver fuel to the burners. No fuel, no flame.

  3. PCB Complications: The printed circuit board (PCB) directs the boiler's operations. Confusion here can lead to misfires, quite literally.

  4. Sensor Failures: If sensors – like the heat exchanger temperature sensor – send the wrong signals, the boiler gets confused. Sometimes a sensor isn't at fault; it just needs cleaning.

  5. Blocked Heat Exchanger: A heat exchanger clogged with debris impedes the gas flow, preventing proper combustion.

It's imperative that these issues are investigated by a registered engineer, who can diagnose and rectify the problem with precision. Manufacturers often guarantee their pieces, so it's prudent to check if the boiler is still under warranty.

Signs of the Worcester Boiler Fault 227

Recognising the fault 227 on a Worcester boiler is essential for swift troubleshooting. This code signifies an ignition issue within the system.

List and Explain Common Signs and Symptoms That Indicate This Specific Error

  • Repeated Ignition Failures: The boiler makes multiple attempts to ignite, as evidenced by a flashing blue light, which denotes ongoing ignition efforts. If the burner fails to light after several tries, the fault 227 error will be displayed.

  • Absence of Hot Water and Central Heating: Should the error persist, users will notice an immediate lack of hot water and central heating, as successful ignition is critical for these functions.

  • Boiler Lockout: To prevent damage, the boiler will enter a lockout state when it cannot detect a flame after several ignition attempts. This safety measure halts operation until the fault is addressed.

  • Faulty Flame-Sensing Electrode: A flame-sensing electrode in disrepair often causes fault 227. Its primary role involves detecting the presence of a flame, and if it cannot perform this vital function, the boiler may fail to operate correctly.

  • Flashing Error Code: Typically, the display panel of the boiler will flash the specific error code ‘227’, offering a clear visual indication of the problem at hand.

  • Disrupted Ignition Lead: It's not uncommon to find the ignition lead compromised, unable to carry the necessary voltage to ignite the burner successfully.

  • Frozen Condensate Pipe: In colder months, a frozen condensate pipe can also trigger the fault 227, as it impedes the boiler's normal ignition process, although this is less directly related to the fault itself.

Can I Fix This Boiler Error Code Myself?

Encountering a Worcester boiler fault code EA 227 can often be addressed without the immediate need for a professional's intervention. However, certain measures should be taken with caution to ensure safety and prevent further damage.

DIY Tips (If Applicable) for Resolving the Error

If the error surfaces during the colder months, freezing of the condensate pipe is a likely culprit. Defrosting this pipe is a feasible task:

  1. Identify the external white condensate pipe.

  2. Apply warm water gently to thaw the ice within - never use boiling water as it could cause damage.

  3. Once thawed, reset the boiler using the specific instructions in the boiler manual.

  4. Inspect for any further issues post the reset operation.

Adopting preventive measures, like fitting lagging to the condensate pipe, can help avoid such occurrences in the future.

Warnings or Advice on When to Avoid DIY and Seek Professional Help

Certain scenarios mandate the expertise of a Gas Safety registered engineer:

  • If multiple ignition attempts fail, it can point to deeper issues requiring professional skills and knowledge.

  • Safety protocols must be respected. If you are uncertain at any stage, it's prudent to stop and call an expert.

  • DIY repairs might void the warranty. Verify with your warranty policy whether such attempts are advisable.

  • When in doubt or facing a persistent fault code, a professional boiler engineer's diagnosis not only ensures safety but can also be cost-effective in the long term.

Remember, improper handling can exacerbate problems and create safety hazards, particularly with gas appliances.

Do I Need to Contact a Gas Safe Engineer to Fix This Error Code?

Encountering a Worcester boiler fault 227 often necessitates intervention by a Gas Safe Registered engineer, particularly due to the technicalities involved in assessing and repairing gas appliances.

Advice on When It's Necessary to Call a Professional

In scenarios where the Worcester fault code 227 appears, the boiler owner should first check for simple solutions, such as ensuring the boiler has pressure and that there are no easily rectifiable issues. If these checks don't resolve the issue, it is crucial to contact a registered Gas Safe engineer. This professional is qualified to assess and, if necessary, repair faults involving gas valves—components directly linked to this fault code. Any attempt to fix gas-related problems without proper certification could result in:

  • Compromised safety — risking leaks or other dangerous outcomes.

  • Voided warranties — manufacturers may invalidate warranties if unauthorised persons tamper with the boiler.

  • Legal repercussions — UK regulations mandate that only certified individuals undertake gas work.

Explanation of What a Gas Safe Engineer Is and Why Their Expertise Is Important

A Gas Safe Registered engineer is a technician who is listed on the official UK register of gas engineers, legally authorised to work on gas appliances. They possess the necessary skills, knowledge, and tools to ensure safety when installing, maintaining, or repairing gas boilers. Given the possible hazards involved with improper handling of gas appliances, a Gas Safe engineer is the only individual who should address the fault code 227. Their certification is a testament to their capability to:

  • Diagnose complex issues, possibly hidden from the untrained eye.

  • Provide a safe environment when handling potentially dangerous gas appliances.

  • Ensure your boiler remains compliant with current UK safety and building regulations.

How Much Does Fixing the Worcester Boiler Fault 227 Cost?

Fixing a Worcester boiler exhibiting the fault code 227 involves a variety of costs, largely dependent on the nature of the fault and the labour involved.

General Cost Range for Fixing This Error (Can Be an Estimate or Based on Average Rates)

  • Low complexity repairs: If the issue is minor, such as cleaning a blocked pilot jet, costs might range from £50 to £150.

  • Moderate repairs: For faults such as a faulty flame sensing electrode or ignition lead, the price can vary between £150 to £250.

  • High complexity repairs: A damaged printed circuit board (PCB) might cost upwards of £300, considering parts and labour.

Factors That Might Affect the Cost

Part prices can vary; an electrode may be modestly priced, whereas a PCB will be significantly more costly. Labour rates fluctuate based on regional variations and contractor expertise. Remember, a warranty might cover some costs, so it's wise to review warranty terms first. Furthermore, costs can be influenced by accessibility for repair and potential need for additional work to ensure safety and compliance.

Do I Need a New Boiler?

When faced with the Worcester boiler fault 227, homeowners may question whether to opt for a repair or invest in a new boiler. The decision can hinge on factors including the severity of the issue, cost-effectiveness, and the boiler's age.

Criteria to Decide Whether a Repair Is Sufficient or If a New Boiler Is Required

  • Age of the Boiler: If a Worcester boiler, particularly models like the Greenstar, is reaching the latter end of its typical lifespan, which can be around 10-15 years, then replacement may be a more cost-effective solution over long-term repairs.

  • Frequency of Breakdowns: Should the boiler frequently require repairs, causing discomfort and unpredictability, it may be time to consider a Worcester Bosch boiler replacement.

  • Energy Efficiency: New Worcester Bosch boilers boast high energy efficiency. They are designed to utilise less gas to produce the same amount of heat, which could save on energy bills in the long run. An older, less efficient boiler could justify the move towards a new, energy-efficient model.

  • Cost of Repairs: If the cost of fixing the existing boiler is substantial, particularly if it’s a complex fault like 227 that might involve multiple components, then investing in a new boiler might be the preferred route.

Information on the Lifespan of Boilers and When Replacement Is Typically Recommended

  • Expected Lifespan: A typical Worcester Greenstar boiler is expected to last between 10 to 15 years before its components may start to wear out.

  • Recommended Replacement Period: It is generally advised to consider boiler replacement before the unit fails entirely, particularly beyond the 10-year mark. This pre-emptive approach can avoid the inconvenience of sudden breakdowns.

  • Combi and Conventional Boilers: Whether one owns a combi or a conventional boiler, the same general lifespan applies. The decision to replace should also consider advancements in technology which may not have been available at the time of the initial installation, offering not only improved reliability but also enhanced energy efficiency.

Choosing to repair or replace depends on these specifics. A new Worcester Bosch boiler may offer long-term benefits, although each situation should be assessed individually.

How much does a new boiler cost?

Effectively, new boiler cost can be split into two segments: the first is the actual boiler itself (unit price), and the second is the cost of the boiler being installed (set up) in your property by an expert engineer. 

Here at iHeat, we remove all of this undue stress and make the decision making process of upgrading to a new central heating system, as easy as possible.

Boiler costs can vary depending on a number of factors including their brand, model, fuel, output, warranty, labour and boiler installation type. Typically a new boiler will cost between £1,845 and £3,500, below is a list of average boiler installations offered by iHeat (guide only).

Installation Type

Price (inc VAT)

Combi to combi swap


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System to combi conversion


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New boiler install


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Back boiler to a combi


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System to system


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Summarise the Key Points Discussed in the Blog Post

The fault EA 227 on a Worcester boiler signifies a failure in detecting a flame after several attempts, raising concerns about the boiler's function. Key components, such as the flame-sensing electrode, are implicated in this error, highlighting a failure within the system or a lack of flame detection. Moreover, external factors, like cold weather, could exacerbate the issue, possibly leading to a frozen condensate pipe.

Troubleshooting steps may include thawing this pipe and resetting the boiler, which could resolve the problem without the need for professional intervention.

Frequently Asked Questions

How do I fix my Worcester boiler error code 227?

To address error code 227, which signifies a flame detection failure, inspect the gas supply, clean the pilot jet, check the ignition leads, and examine the flame sensing electrode. If these components seem intact, the printed circuit board may require professional assessment.

How do I clear the error code on my Worcester boiler?

Clearing the error code usually involves resetting the boiler. Press and hold the reset button for approximately five seconds. If the error reappears, further troubleshooting or professional help may be necessary.

How do I reignite my Worcester boiler?

To reignite the boiler, reset it by pressing the designated reset button. If it fails to ignite, ensure that the gas supply is on and the pilot light—if present—is lit. Persistent issues might require a Gas Safe registered engineer's expertise.

How do I clear the error code on my boiler?

Error codes are typically cleared with a system reset. Press the reset button on your boiler and wait for the system to restart. If the error persists, consult your boiler's manual or contact a professional.

How do I reset my Worcester Bosch boiler?

Reset your Worcester Bosch boiler by locating the reset button, which is often marked with a flame symbol. Press and hold it for a few seconds until the boiler restarts. If the system does not reset, check for any other issues or consult a specialist.

How do you fix an ignition fault on a boiler?

Fixing an ignition fault involves inspecting the ignition leads, electrodes, and gas supply. Replace any faulty components and ensure the area is clean. If the problem remains, a Gas Safe registered professional should inspect the appliance.

How do you fix an ignition failure?

Repairing an ignition failure entails checking the boiler's components, including the ignition leads, gas valve, and electrodes. Ensure cleanliness and proper connections. For persistent ignition issues, seek assistance from a qualified engineer.

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Article by
Stephen Day | Co-founder
Gas Safe registered and FGAS certified engineer with over 20 years experience in the heating and cooling industry.