41
External Fans
Two 12 volt DC fans, shown in Figure 5-5,
installed on the cooling system foam plug boost
ventilation.
Each fan draws 0.900 amps @ 12 volt DC.
Fan resistance through the fan motor circuit is
approximately 1.5 Ω (each fan).
External fan output is turned on when there is a
call for cooling by the external fan thermistor.
Divider Heater
The divider heater is permanently “foamed”
between the freezer and fresh food compartment
divider. Turning on the refrigerator automatically
turns on the divider heater.
Power output to the divider heater is turned off
during defrost bypass.
Fan Thermistor
Figure 5-6 illustrates the location of the thermistor
that controls fan operation. The fans run when the
thermistor senses fin temperature to be 130 °F
(54.4 °C) and above. When the fin temperature is
115 °F (46 °C) or below the fans are idle.
Thermistor failure, indicated by fault code C4 on the
display, will cause both fans to run continously.
Figure 5-5. —Fans and
hardware.
Retaining screws
Fan
Fan
Bracket
Bracket
Spacer (2-per fan)
Screw, #8-32 x 1" (2 per bracket)
In roof vented installations it may be necessary
to remove the refrigerator from the enclosure
to measure thermistor resistance or to check
the fan operation.
In sidewall installations the thermistor
resistance and fan operation can be checked
after removing the upper sidewall vent.
IMPORTANT
Figure 5-6. —Fan thermistor location.
Condenser fin
Thermistor
Clip
Figure 5-4. —Light fixture assembly.
Light fixture
Clips
Light bulb
Cover
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