Worcester Bosch EA 227 Fault Code

The EA 227 error code on Worcester Bosch boilers indicates a flame signal fault. This means the boiler has detected an issue with the flame sensing system.

What Does EA 227 Mean?

This fault occurs when:

• The flame sensor doesn't detect a flame when it should
• The flame signal is too weak or inconsistent
• There's an issue with the ignition sequence

Common Causes

1. Dirty Flame Sensor

The most common cause. Carbon buildup on the sensor prevents proper flame detection.

2. Faulty Ignition Electrodes

Worn or misaligned electrodes can cause intermittent ignition.

3. Gas Supply Issues

• Gas valve problems
• Low gas pressure
• Air in the gas line

4. Flue Blockage

Blocked flue restricting proper combustion and detection.

DIY Troubleshooting

Before calling an engineer, try these steps:

1. Reset the boiler: Press the reset button for 3 seconds
2. Check gas supply: Ensure other gas appliances are working
3. Inspect the flue: Look for visible blockages or damage
4. Wait and retry: Sometimes condensation can cause temporary issues

When to Call an Engineer

Call a Gas Safe registered engineer if:

• The fault persists after reset
• You smell gas (call National Gas Emergency: 0800 111 999)
• The boiler is older than 8 years
• You've had multiple faults recently

Repair vs Replace

Typical Repair Cost

£120-£250 for sensor cleaning/replacement £150-£400 for ignition electrode replacement

Consider Replacement If:

• Your boiler is over 10 years old
• You're having frequent breakdowns
• Repair costs exceed £500
• Your energy bills are high

Get Help Now

Need immediate assistance?

Option 1: Call for a repair appointment Option 2: Get a quote for a new, efficient boiler

Modern boilers are much more reliable and can save you £400+ per year on energy bills.