Worcester Boiler Error Codes

I know, getting a Worcester boiler error code can be a pretty daunting thing, the absolute last thing you want during winter is to have your boiler break down. I understand it can be pretty stressful, but it doesn’t necessarily mean a significant expense.

A lot of error codes can simply be solved by a reset, or what you may think is an error code might not be. In this article, I’ve researched & explored errors with Worcester Bosch boilers, answering some of the most common fault questions, telling you how you can reset the boiler & providing a full breakdown of the fault codes & what the suggested action for solving them should be.

If you want to find out more, it’s a rather long article, so you can use the navigation below to quickly answer your specific query:

• Why is my Worcester Bosch boiler flashing?
• How do I fix EA error on my Worcester boiler?
• How do you reset the code on a Worcester boiler?
• What are the most common Worcester Bosch boiler faults?
• Most common Worcester Bosch boilers
• List of Worcester boiler error codes
• Other Worcester Bosch boiler errors
• Get A Boiler Repair Quote

Now let’s dig into this complete Worcester Bosch boiler error & fault code guide, and diagnose the issue with your boiler.

My Worcester boiler has a flashing blue light (How To Fix It)

You may have noticed a blue flashing light on your Worcester Bosch, this indicates that your boiler is experiencing a fault, and it can be one of 5 different things. You will need to determine what error code is being displayed whilst the light is flashing to find out exactly what it could be. Here’s a breakdown of the potential issues related to the flashing blue light:

1. Condensate pipe blockage (D5 or EA Error Code): Remember the beast from the east? That storm a few years back. This error happened all the time. All boilers have a condensate pipe and sometimes it freezes up, all you have to do is boil your kettle and pour some hot water over it to thaw the ice and unblock the pipe.
2. Flue blockage (EA Error Code): This is a common one, just check the flue for any blockages or damage. It’s the exit pipe you might find on the outside of your building. If you can’t see anything you might need to replace the flue, which means calling a boiler engineer.
3. Gas Supply Issue (EA Error Code): If there is no gas supply to the unit, this could be the cause. You should check your other gas appliances if you have any, if they aren’t working then you might have an issue with your homes gas supply, if they are, then it’s likely an issue with the gas connection to your boiler.
4. Low Pressure (CE207 Error Code): It happens, from time to time boilers do lose pressure, and it needs to be at a good level to operate. The pressure should be between 1 and 1.5 bars, so just top it up if this is the case with the fill loop.
5. Service Mode (No Error Code): The boiler could be in service mode, it might have been left this way by an engineer or the switch could have been knocked. You should be able to press (& hold on some models) the spanner button to exit this mode.

How do I fix EA error on my Worcester boiler?

The Worcester Bosch boiler EA fault code is one of the most common, if not the most common error on this model. It means that the boiler has not detected a flame when it has tried to light (start).

You should first try to reset the boiler first, hold the reset button for 5 seconds.

If the issue persists, you are unfortunately going to have to calling a boiler engineer. There’s no need to be concerned though, the EA code is a safety mechanism, your boiler or surroundings aren’t at risk of any gas leaks or major issues.

How do you reset the code on a Worcester boiler?

If a fault occurs on your boiler, the first thing you should always do is reset it. To do this you simply reset the boiler, which is fairly simple and straight forward to do, just turn the central heating temperature knob anti-clockwise until it reaches the position that reads “Reset” – hold it in this position for five to ten seconds, then go back to the original setting you had it on.

After a few seconds, your boiler should reset, and hopefully, the error code will be gone. You’ll be surprised how many errors can be fixed by simply resetting the boiler.

What are the most common Worcester Bosch boiler faults?

I will dig into each and every Worcester Bosch boiler error later, however, there are a few common error codes that come up time and time again that people regularly search for.

Here are the most common:

• EA – This means no flame has been detected on ignition, reset the boiler, if this doesn’t fix it, call a boiler engineer
• E9 – This is an issue with the safety sensor, it’s either at a too high temperature or short circuited. This could be the boiler overheating.
• A21 – This is actually an error on a programmable thermostat
  & it indicates no RF signal, the signal needs to improve, try moving the thermostat closer to the boiler.
• EA 227 – This error is due to the boiler trying to ignite four times and failing to do so. It will attempt this again, but if no flame is detected you’ll be locked out, and you have to call a boiler engineer
• EH – Or EH 258 is the heat control module or control box being defective and needs to be checked

Most common Worcester Bosch boilers

There are several boilers, and in the next error code list I will cover the error codes from them all. However for reference here are some of the most common boilers and their series:

Worcester Bosch Boiler Series

1. Worcester Bosch I Series
2. Worcester Bosch Life
3. Worcester Bosch Si
4. Wocester Bosch CDi
5. Worcester Bosch Heatslave

Most Common Worcester Bosch Boilers

1. Worcester Bosch 30i
2. Worcester Bosch 28i Junior
3. Worcester Bosch 30CDi
4. Worcester Bosch Greenstar 8000 Life
5. Worcester Bosch 30si

List of Worcester boiler error codes

Now the bit you’ve been waiting for. The comprehensive list of Worcester boiler error codes. It’s a rather long list & certain codes apply to certain kinds of boiler, so I’ve included a quick search function, where you can simply type in your error code and you’ll be able to locate yours.

Other Worcester Bosch boiler errors

Got an error with your Worcester Bosch boiler but it doesn’t quite equal up to or isn’t displaying an error code? Well, it could still be one of a few things, which I’ve touched on below:

Locking error
If there is a flashing warning triangle and a code to go with it, it means your boiler is locked out. You should be able to solve this by simply resetting the boiler, as this should clear the fault.

Blocking error
No fault code displayed but the boiler isn’t operating? The code will actually be in the info menu, which you can get to by using the return or spanner button. Sometimes these codes will clear by themself as they often have a pre-defined duration.

Maintenance Codes
These are situations that need attention but aren’t necessarily errors, and they will show up as HH codes. H11 means there’s a defect with the hot water sensor, but your boiler will still deliver the hot water but have less control over it & H13 means it requires a service, and the service interval is set from 0 to 72 (in months) you can find this in the settings and changing it to 0 will remove the fault, although it might be time for a service.

Get a Boiler Repair Quote

Have you read about your specific fault code and unfortunately found that you might need to call a boiler engineer to rectify it? Well, although there is, of course, going to be an expense to doing so, you can use the below quote form to help you achieve the best possible price. We will do all the leg work for you, comparing local boiler engineers to find you the lowest price possible for the job.

Let us find you the best price using the form below: