Listed below are the common Atag fault codes as described by the boiler manufacturer along with a possible cause.
ATAG Boiler Error Codes
When your ATAG boiler has an error, you will see an error symbol like the one above. This symbol is normally accompanied by one of the codes in the tables below.
IC & IS Combi Boiler Error Codes
Other Fault Codes
If you see a spanner symbol this could be one of two things; firstly it could mean your boiler is in service mode. Secondly it could be blocking, if the boiler is blocking the code is only temporary and will clear itself or will lock the boiler after several attempts if the error keeps on occurring.
ATAG Error code 133
If you are seeing the error code 133, your boilers flame is failing after 5 ignition attempts. This could be down to your condensate drain pipe freezing. A frozen condensate pipe is something that is often easily fixed.