Viking VCSB360 Service Notebook page 33

PROBLEM
Freezer compartment too
warm (continued)
Refrigerator compart-
ment too warm
b.
POSSIBLE CAUSE
High ambient temperature
Cabinet light
Excessive frost on evapo-
rator.
Unit:
a. Compressor won't
Run
b. Compressor runs
continuously
Motorized Air Door:
a. Baffle closed
b. Baffle is stuck closed
Electronic control board:
a. Set too warm
b. Baffle stuck closed
Thermistor:
a. Sends wrong or high
resistance signal to
control board.
Others, same as
"Freezer compart-
ment too warm
33
TEST PROCEDURE-ACTION
Locate in area our of direct rays of the
sun and away from heat registers or
Other source of heat.
Check to make sure door switch is
closed. Replace or adjust switch if
necessary.
check items under complaint, "incom-
plete defrosting."
Check items under complaint, "Com-
pressor won't run.
Check items under complaint, "Com-
pressor runs, but no refrigeration or
Insufficient refrigeration.
Check for a motor winding resistance of
8800 ohms between the BE/Y and W
wires or the Y/R and W wires. If the
meter reading shows "open" for both
BE/Y and Y/R wires, replace motor.
Check for iced door. Remove ice and
eliminate moisture entering due to air
leak.
Turn knob to colder position.
Check for 120 volts between the OR/W
and W wires at circuit board plug.
NOTE: Use static control gloves when
handling electronic control board.
Check resistance for given temperature
at GY wires. An open or infinite resis-
tance reading closes the door. Replace
the thermistor.
Same as items under, "Freezer compart-
ment too warm."