Appliance Repair Questions? Ask a Technician for Answers ASAP
When looking for details or parts for your boiler use GC code 47-019-04-05
You can find service manual here, which has an exploded parts diagram and fault finding section.
The user manual can be found here, can you advise what lights are shown on the boiler and what is on the display, in order to see if I can guide you through some troubleshooting steps.