Do you ever get to a customer’s house, their boiler is showing a fault code and there’s no servicing manual in sight? With our app you won’t need to hunt for the manual, you can quickly find the cause of the error and get cracking with fixing the problem.

Our Boiler Fault Codes app is jam packed with fault codes for the most popular boilers and manufacturers in the UK...

• Around 100 boiler models
• 17 boiler manufacturers
• Fault causes and/or possible solutions provided by the manufacturers
• Flow charts for some manufacturers
• Easy to understand instructions
• High quality fault code documents
• Easy to use, pinch to zoom, rotate the device for an even bigger display
• Works on iPhone and iPad
• All documents are stored in the app, no need for an internet connection!

And there's even more, need to get in touch with a manufacturer about a fault? The app includes contact details for all 17 manufacturers, that includes phone numbers and email addresses...

• View contact details for each manufacturer by tapping on the i button below the logo
• Includes main and technical (where available) phone numbers
• Technical or main email address
• Link to their main website
• Full address
• Add to your own contacts

Got an idea for how we can make this app better? Send us an email anytime:

What’s New

Version 1.2

We've added dozens more pages of content for Baxi, Ideal, Vaillant and Worcester Bosch boilers. Including more fault codes, some flow charts and information directly from factory technical departments (only available on the app).

Ratings and Reviews

4.4 out of 5
14 Ratings

14 Ratings

shannon.93 ,

Genius idea

This is a great app. Everything I need in one place for fault codes also has Techinal numbers for all manufacturers so you don’t have to look for it. Just very handy app and saves time if you don’t have manual which is more often than not.

Slawek67 ,


Completely waste of money, just a list of fault codes and no any guidance on how to rectify the problems. It should be an option to try the app for free. I want my money back.

Developer Response ,

Hi Slawek67, we're sorry our app didn't meet your expectations. We have put together multiple lists with hundreds of faults codes as well as the guidance provided directly by the manufacturer for each code. Whilst we'd love to be able to provide detailed step-by-step instructions on how to fix the faults it’s simply not possible and we have to publish what the manufacturer produces. We believe our app is very useful to heating engineers because it provides the convenience of having all this information in one place.

Like all apps from the App Store you're absolutely entitled to a refund if you buy something and change your mind. We recommend you contact Apple to arrange this.

App Privacy

The developer, Mr Combi Training, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary based on, for example, the features you use or your age. Learn More


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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