Viking DFUD040 Manual page 27

• Is
the fine
attached?
• Are you using the correct wash
program?
• Is the machine correctly loaded?
If you have answered "YES" to the
above questions, you should check the
following:
• That the machine has the correct
quantity of water.
• That the spray arms are moving
in the right direction and rotating
at the correct speed (minimum 12
rpm).
• That the circulation pump is
working as intended.
• That the spray arm divider is
working as intended.
• That the machine empties the
water properly (no residual water
present before refilling).
Cloudiness or stains on washed items
• Is
the rinse
correctly set?
• Is the temperature correctly set?
If you have answered "YES" to the
above questions, you should check the
following;
• Spray arms
• Circulation pump
• Element
• Combined dispenser
• Spray arm divider
Does the machine
beginning of the wash program?
• Is the water tap fully open?
• Is the filter at the screwed nipple
of the supply hose clean?
If you have answered "YES" to the
above questions, you should check the:
filter securely
aid dispenser
stop at the
26
• Inlet valve
• Float
• Micro switch
FAULT CODES
In the fault codes below, "L" denotes
LED and "F" denotes fault code on the
display.
L1 / F1 Temperature stop fault
The temperature rise is less than 50º F in
five minutes. The program exits from
the heating stage and continues in the
process. Indication only in the service
menu.
CHECK:
• Element
• Thermister
• Water level
• Circulation pump
• Control unit
• Wiring
L2 / F2 Overfilling
Too much water in the machine
(pressure sensor) or float activated. If
the water has not been evacuated within
60 seconds, the program will be
interrupted (drain pump activated).
CHECK:
• Drain pump
• Blockage in the hoses
• Flow sensor
• Inlet valve
• Leakage
• Wiring
L3 / F3 Thermister fault
Interruption or >176º F. The program
exits from the heating stage and
continues in the process. Indication only
in the service menu.