Service manual

27
Troubleshooting
Fault code 07, DRUM OVERFILLED
This fault code is generated by the programming CPU board. The fault
code arises if the drum has been filled with water above a predetermined
level during an on-going wash program. It can be caused by a blocked
level hose, drops of water in the level tube, defective filler valve, defective
electronic filler control, etc.
Action:
• 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.
• Checkusingtheserviceprogramthatallthewatervalvesareworking
correctly.
Fault code 08, NO HEATING
This fault code is generated by the programming CPU board. The fault
code means that the temperature is rising too slowly when heating is
active. The limit for this fault code is normally set to a water temperature
increase of approx. 3°C per 10 minutes but can vary depending on the
type of machine and the software.
The fault code can be caused by a defective heater element, a break in the
power supply to the heater element, defective heater contactor, etc.
On machines built for washing mops, it can be caused by too low a level in
the program stage. The lowest level for a mop program in the main wash
with heating is 90 scale units.