Worcester Bosch Boiler Fault Code EA: Flame Not Detected
Burner ignited but flame signal was lost or not established during starting sequence.
Equipment TypeGreenstar Gas BoilerBrand: Worcester Bosch
Fault SeverityCriticalSystem Lockout Active
Estimated Repair Cost£85 – £290Parts & Certified Labor
🚨 Symptoms of Worcester Bosch Error EA
- Flashing blue light or EA code on display
- No hot water or heating
- Boiler attempts to ignite, clicks, and locks out
🔍 Root Causes for Worcester Bosch Code EA
- Frozen condensate pipe during cold sub-zero weather
- Low gas pressure from meter
- Faulty ignition electrode or flame sensing probe
- Debris in the burner or flue blockage
🛠️ How to Reset & Troubleshoot Worcester Bosch Error EA
- Pour warm (never boiling) water over the external plastic condensate discharge pipe to thaw frozen blockages
- Press and hold the reset button for 3 seconds
- Have a certified engineer test the spark generator and clean the combustion chamber
Frequently Asked Questions — Worcester Bosch Code EA
What does Worcester Bosch error code EA mean?
Worcester Bosch code EA indicates: Burner ignited but flame signal was lost or not established during starting sequence.
How do I reset error code EA on Worcester Bosch?
Turn off the electrical circuit breaker or isolator to the unit for at least 5 minutes to discharge the capacitors and reset the microprocessor. If the code reappears immediately upon restarting, professional inspection is required.
What causes error code EA on Worcester Bosch systems?
Common triggers include: Frozen condensate pipe during cold sub-zero weather, Low gas pressure from meter, Faulty ignition electrode or flame sensing probe.