Viking FDB451 Service Manual page 13

Fail Codes (cont'd)
LED 1 LED 2
Pots Pans Normal Wash
4 1
4 2
4 3
4 4
4 5
5 1
5 2
5 3
5 4
5 5
Flash both LED1 and
LED2 continuously
Flash all LEDs but start
and run continuously
©2012 Viking Preferred Service
Service
Error Code
Cycle Only
Temperature sensor
Temperature
reads out of range
Sensor Error
Wash heater current
Wash Heater sense is out of range
X Error
Dispenser current sense
is out of range
X Dispenser Error
Inlet valve current sense
Inlet Valve
is out of range
X Error
Pressure sensor reaches
the fill level too fast
(abnormal pressure
Fill too Fast
sensor change)
Error
Vent current sense is out
X Vent Error of range
Blower current sense is
X Blower Error out of range
Dry Heater
N/A on 451 model
X Error
Main control reads
Current Sense current draw
X
Error when no loads are active
Main control or UI detects
a board
Internal Error
level failure
Moisture sensor output is
Moisture
equivalent
Sensor - water
to water in the pan
detection
Power loss occurred
during a
AC Power Loss
running cycle
Cause Action / Possible Root Cause(s)
1. Wires disconnected to temperature sensor
2. Defective temperature sensor
3. Defective control board
1. Wires disconnected between main control and wash heater
2. Defective wash heater
3. Defective main control
4. Defective temperature sensor
1. Wires disconnected between main control and dispenser
2. Defective dispenser
3. Defective main control
1. Wires disconnected between main control and inlet valve
2. Defective inlet valve
3. Defective main control
1. Make sure that unit is level front to back and side to side
2. Verify the house water pressure is within specifications
3. Defective inlet valve
4. Defective pressure sensor
5. Defective main control
1. Wires disconnected between main control and vent
2. Defective vent
3. Defective main control
1. Wires disconnected between main control and blower
2. Defective blower
3. Defective main control
1. Wires disconnected between main control and dry heater
2. Defective dry heater
3. Defective main control
1. Defective main control
2. Defective wire harness
1. Defective main control
2. Defective user interface
1. Water in base pan from overflow / leak
2. Defective moisture sensor
1. Power lost during a cycle
2. Reset by pressing and holding start for 3 seconds
System Diagnosis
13