Monitor, Regulate and Display Compartment Temperatures
Temperature signals from thermistors in refrigerator and freezer compartments are monitored, then displayed on the
LCD. When a compartment reaches high offset temperature (calling for cooling), the compressor and evaporator fan
are switched on. (See Figure 3-11). When a compartment reaches low offset temperature, the compressor and
evaporator fan are switched off. Though compartment air temperature fluctuates from off and on cycles, the “aver-
age” temperature is displayed. (See Figure 3-12)
NOTE: Freezer compartment temperature range is -5°F (-21°C) to +5°F (-15°C). Refrigerator compartment temper-
ature range is +34°F (+1°C) to +45°F (+7°C).
NOTE: If average compartment temperature changes, the display will change by one degree per minute.
NOTE: A refrigerator compressor will not energize after a refrigerator off-cycle defrost unless the evaporator ther-
mistor detects temperatures 38°F (3°C), or above.
NOTE: After a freezer evaporator defrost, the freezer compressor is not energized until after the 5 minute time
delay/dwell that follows all freez-
er defrosts.
NOTE: If a refrigerator compart-
ment thermistor is faulty, the
refrigerator compressor defaults
to 20 minutes on, 40 minutes off
cycling, EE appears at right in
LCD, SERVICE flashes and
Error Code 05 is logged.
NOTE: If a refrigerator evapora-
tor thermistor is faulty, the refrig-
erator compressor will not ener-
gize until compartment air tem-
perature exceeds high offset by
5°F (3°C). SERVICE flashes
and Error Code 06 is logged.
NOTE: If a freezer compart-
ment thermistor is faulty, the
freezer compressor defaults to
20 minutes on, 20 minutes off
cycling, EE appears at left in
LCD, SERVICE flashes and
Error Code 07 is logged.
NOTE: If in Sabbath Mode, the
compartment thermistors still
control compressor operation,
except that when high offset is
reached, there is a random 15
to 25 second delay before com-
pressors are energized.
both compartments.
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