© 2011 Viking Preferred Service
17
Service Diagnostics and Procedures
Fail Codes (cont.)
LED 1
Pots &
Pans
LED 2
Normal
Wash
Service
Cycle
Only
Error Code
Cause
Action
Note
2 5 Level Sensor
Error
Sensor level changes abnormally
(drains too fast/ fills to fast)
1. Make sure that unit is level front to back
and side to side
2. Verify that the drain line has the proper
high loop
3. Defective pressure sensor
4. Defective main control
3 1 User Interface–
Main Control
Communication
Error
User interface is unable to
successfully communicate with
the main control
1. Wires disconnected between main
control and user interface
2. Defective cable between main control
and user interface
3. Defective main control
4. Defective user interface
3 2 Yes Pump Flow
Error
Control detects insufficient/
inconsistent water flow through
the wash system and will not
allow the flow through heater to
activate
1. Verify water is fully turned on to
dishwasher
2. Verify that fill line is not kinked
3. Verify that dishwasher is level front to
back and side to side
4. Verify that filters are not clogged
5. Verify that there has not been a
decrease in water pressure
3 3 Drain Pump
Error
Drain pump current sense is out
of range
1. Wires disconnected between main
control and drain pump
2. Defective drain pump
3. Defective main control
3 4 Motor Status
Error
Motor control communicates a
motor operation failure mode
that is most likely caused by the
motor
1. Verify connection between motor
controller and motor
2. Defective motor control
3. Defective machine control
3 5 Motor Under-
voltage Error
Motor control communicates
a low motor control voltage
condition
1. Verify supply voltage is in specification
2. Verify connection at terminal block
3. Verify AC connection to the machine
control
4. Verify connection between machine
control and motor control
5. Defective machine control
6. Defective motor control
4 1 Temperature
Sensor Error
Temperature sensor reads out of
range
1. Wires disconnected to temperature
sensor
2. Defective temperature sensor
3. Defective control board
4 2 Yes Wash Heater
Error
Wash heater current sense is out
of range
1. Wires disconnected between main
control and wash heater
2. Defective wash heater
3. Defective main control
4. Defective temperature sensor
450
only
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