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10) Check that the components restart after defrost termination.
Refrigerator: Compressor and condenser fan motor energize as soon as the defrost
thermistor termination temperature is satisfied. See "Defrost Termination" under
"IV.A.1.9) Defrost" and "IV.C. Thermistor Check." If components fail to start, control
module must be replaced.
Freezer: Compressor and condenser fan motor energize 3-minutes after defrost
termination temperature is satisfied. Evaporator fan motor energizes 5-minutes after that
(except manual defrost), and the cabinet temperature appears on the display module
5-minutes after the evaporator fan motor energizes. See "Defrost Termination" under
"IV.A.2.9) Defrost" and "IV.C. Thermistor Check." If components fail to start, control
module must be replaced.
C. Thermistor Check
In the event the cabinet thermistor reading is out of range (E1 alarm), the compressor
operates on a fixed time basis of 5-minutes on and 5-minutes off.
In the event the refrigerator defrost thermistor reading is out of range (E2 alarm), defrost
initiation occurs every 4-hours of cumulative compressor run time and terminates on
20-minute minimum defrost timer.
In the event the freezer defrost thermistor reading is out of range (E2 alarm), defrost
initiation occurs every 4-hours of cumulative compressor run time and terminates based
on cabinet thermistor temperature.
To check thermistor resistance, follow the steps below.
1) Move the power switch to the "OFF" position, then unplug the unit.
2) Remove the control box cover.
3) Disconnect and remove the thermistor in question. See "V.I. Removal and Replacement
of Thermistors."
4) Immerse the thermistor sensor portion in a glass containing ice and water for 2 to
3 minutes.
5) Check the resistance between the wires at the thermistor connector. Normal reading is
within 16.0 to 16.7 kΩ. If outside the normal reading, replace the thermistor.
6) Reconnect and replace the thermistor in its correct position. See "V.I. Removal
Replacement of Thermistors."
7) Plug the unit back in. Move the power switch to the "ON" position.
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