On the Original Prusa XL Dwarf board, Marlin firmware is running. Marlin firmware has its own errors, and these will be propagated to the Dwarf board if that Marlin error is not included in another Original Prusa XL error. In this case, the printer will show the message "Dwarf board # fault: #"
Error name: Dwarf Marlin err
Error code: #17503
On the Original Prusa XL, the Dwarf board is part of each print head. A multi-tool version of the XL is equipped with as many Dwarf boards as there are tools. The error message includes the number of the affected Dwarf board, and a text that specifies the nature of the error.
Troubleshooting will depend on the specific error message. Contact our customer support, mentioning the specific error code and error message shown on the printer, we will take it from here.