Tus neeg siv phau ntawv

GENERAL TROUBLESHOOTING
Problem Display Test/Action
"L0 C"
shown on
display.
See Built-In Fault Code
Troubleshooting Guide.
"H2 L0"
shown on
display.
See Built-In Fault Code
Troubleshooting Guide.
"d0 0r"
shown on
display.
See Built-In Fault Code
Troubleshooting Guide.
UNIT TEMPERATURES AND THERMISTORS
Built-In Refrigerator Compartment Thermistor
The refrigerator compartment (r) thermistor senses the
refrigerator compartment temperature and relays it to the
control board.
REFRIGERATOR COMPARTMENT THERMISTOR
Thermistor Condition Action
Open or shorted
▪ EE on display.
▪ Service wrench icon
flashes.
▪ Fault code logged.
▪ Compressor faults to 20
minutes on and 40
minutes off.
High temperature offset
reached
High speed run command
sent to refrigerator evaporator
fan.
Display temperature
Changes one degree per
minute; is an average of
compartment thermistor
readings.
Sabbath mode
15- to 25-second delay before
compressor starts.
Refrigerator compartment
below 2°C
Defrost time extended before
starting evaporator fan.
Refrigerator Compartment Thermistor Test
1 Turn off power to the unit.
2 Follow the procedure in Component Removal and
Installation to expose the refrigerator cabinet thermistor.
3 Follow the procedure in Component Removal and
Installation to expose the control board.
4 Remove the thermistor harness from the control board.
5 Place the thermistor into an ice bath of 0°C. Let the
thermistor sit for five minutes, stirring occasionally.
6 Measure the resistance of the thermistor through the control
board connector.
7 If thermistor is outside the normal range of 30,000 to 33,000
ohms, replace it.
Built-In Refrigerator Evaporator Thermistor
The refrigerator evaporator (rE) thermistor senses the
refrigerator evaporator temperature and transmits it to the
control board.
REFRIGERATOR EVAPORATOR THERMISTOR
Thermistor Condition Action
Open or shorted
▪ EE for "rE" themistor in
diagnostics.
▪ Service wrench icon
flashes.
▪ Fault code logged.
▪ Compressor not
energized until
compartment temperature
is 3°C above high offset.
3°C to 6°C Compressor energized.
Compartment temperature
below 2°C
Evaporator fan energized.
Refrigerator Evaporator Thermistor Test
1 Turn off power to the unit.
2 Follow the procedure in Component Removal and
Installation to expose the refrigerator evaporator thermistor.
3 Remove the thermistor from the refrigerator evaporator.
4 Follow the procedure in Component Removal and
Installation to expose the control board.
5 Remove the thermistor harness from the control board.
6 Place the thermistor into an ice bath of 0°C. Let the
thermistor sit for five minutes, stirring occasionally.
7 Measure the resistance of the thermistor through the control
board connector.
8 If thermistor is outside the normal range of 30,000 to 33,000
ohms, replace it.
Built-In Freezer Cabinet Thermistor
The freezer cabinet (F) thermistor senses the freezer cabinet
temperature and transmits it to the control board.
ICBBI-42UFDID
Troubleshooting
BUILT-IN GENERAL TROUBLESHOOTING (continued)
service.subzero.com
7041397 REVA 12/2017
161