Viking DFSB542 Series, Service Manual, Page: 40 / 87

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10
Viking Preferred Service
40
Diagnostics
VCC3 Diagnostic Codes
1 Flash No failure detected
2 Flashes No signal from the control board
3 Flashes Inverter failure
4 Flashes Compressor failure
Flashing cycles
1-flash code: 1 flash every 15 seconds
2-flash code: 2 flashes every 5 seconds
3-flash code: 3 flashes every 5 seconds
4-flash code
4 flashes every 5 seconds
Diagnostic Procedures
Code Compressor
Status Probable Root Causes Service Action
1 Flash–every 15 seconds ON UÊ œÊv>ˆÕÀiÊ`iÌiVÌi` If system is not working properly, check
other refrigerator components
OFF UÊÊ œÊÈ}˜>ÊvÀœ“Ê
Control Board
UÊ"«i˜ÊÌ iÀ“ˆÃ̜À
If refrigerator settings (thermistor condi-
tions) are at levels in which compressor
status should be “ON”:
* Unplug inverter from power supply and
wait for 2 minutes, reconnect the inverter
to the power supply and wait for 12
minutes
UÊÊvʈ˜ÛiÀÌiÀÊÃ̈Êà œÜÃÊ£Êy>à ÊVœ`iÊ>˜`Ê
compressor is “OFF”, then check the
control board
2 Flashes–every 5 seconds OFF UÊÊ œÊÈ}˜>ÊvÀœ“Ê
Control Board
UÊ iVŽÊvÀiµÕi˜VÞÊV>LiÊVœ˜˜iV̈œ˜
UÊÊvÊvÀiµÕi˜VÞÊV>LiÊVœ˜˜iV̈œ˜ÊˆÃÊ"]Ê
replace inverter
3 Flashes–every 5 seconds OFF UÊʜ“«ÀiÃÜÀɈ˜ÛiÀÌiÀÊV>LiÊ
interrupted (open circuit)
UʘÛiÀÌiÀÊ`>“>}i`
UÊʜ“«ÀiÃÜÀÊ܈˜`ˆ˜}ʜ«i˜Ê
circuit
UÊÊ iVŽÊˆ˜ÛiÀÌiÀÉVœ“«ÀiÃÜÀÊV>LiÊ
connection
UÊÊ iVŽÊVœ“«ÀiÃÜÀÊ܈˜`ˆ˜}ÊÀiÈÃÌ>˜ViÃÊ
(among 3 terminal hermetic pins)
UÊÊÊvÊÀiÈÃÌ>˜ViʈÃÊÜˆÌ ˆ˜ÊëiVˆwV>̈œ˜Ê>˜`
inverter/compressor cable is OK,
replace inverter
Diagnostic
LED