Service manual

32
Troubleshooting
Fault code 23, NO I/O ADDRESSED
The fault code means that there is no I/O board addressed in the system
at all.
Action:
• (Requirespassword)ReaddresstheexistingI/Oboardfromtheservice
menu.
Fault code 24, CHECKSUM FROM DLCU
This fault code is generated by the programming CPU board. The program
unit has detected a fault in the internal communication in the DLCU-pro-
cessor.
Action:
• ReplacetheCPUboard.
Fault code 27, LEVEL OFFSET
This fault code is generated by the programming CPU board. The fault
code arises if the level system indicates a level at the start of the wash
program (when the drum should be empty) that exceeds what the program
unit can compensate for automatically. This can be caused by blocked
drain, blocked level hose, a drop of water in the level hose, leaking level
system, defective level control, etc.
Action:
• Checkdrainfordirt.
• Blowthroughthelevelhoseandcheckthatitisnotblockedanddoes
not contain any water.
• Checkintheserviceprogramthatthelevelcontrolisworkingcorrectly.