Worcester boiler ea fault
Worcester boiler ea code fault relates to a ignition fault.
However what you need to understand is, ea on Worcester boilers is not a simple fault and usually means other events will lead the boiler to the ea fault. Here we will do our best to explain these events and by the end you will have a good idea why this fault occurs. If you would like us to repair book by click the phone on our home page here
During ignition Worcester boilers like most will send power to the ignition valve via the over heat thermostat and condensate trap. If the condensate trap has a fault ie the line is blocked then ignition will seize immediately until the fault is rectified and Worcester ea code will be displayed.
If this is ok and the over heat stat has not activated then next inline will be Fan and if applicable Air pressure switch. If the boiler has Air pressure switch then the pcb will look to see if this device is in working order. If all is good then power is sent to the fan in DC or sometimes ac, which will convert by the pcb to dc to control the speed of the fan.
If you would like us to repair book by click the phone on our home page here
The fans speed will control the gas valve eventually when the boiler has passed flame rectification ( check out a cool video here of how flame rectification controls a fm radio).
Flame rectification – the pcb will fire the pilot via an ignition block or ignition assembly. Once the flame converts the ac to dc back to boilers pcb then the pcb will fully power the fan. The fan will lift open the gas valve, in turn will fire the boilers main burner.
So if you have gas the burner will fire, if no gas or a flame rectification fault the boiler will not fire. If the burner has fired but then shows ea. Then two things can happen.
- the gas pressure is incorrect either due to gas valve issue or a fault in the flue ways causing the flame to lift off the probe
- The condensate trap is checked after ignition and not prior. The condensate trap may well be blocked.
QUICK GUIDE TO THE EA WORCESTER FAULT CODE – BOOK OUR QUALIFIED GAS SAFE ENGINEERS HERE
