Sub-Zero 601R-2 Technical & Service Manual page 145

Built-In
Built-In
PROBLEM
I. Warm Refrigerator
Temperatures with
"SERVICE" Flashing
Pointers:
Refrigerator door must be open
and compressor running for five
minutes.
1. "EE" appears in place of refrig-
erator evap. temperature, see:
• Evaporator thermistor discon-
nected or shorted
2. Evaporator Temp 15°F (-9°C)
or lower within 5 minutes
w/door open, see:
• Door ajar
• Lights stay ON
• Evaporator fan fault
• Compartment or evaporator
thermistor misread
• Evaporator heavily frosted
• Sealed system fault: leak or
partial restriction
3. Evaporator Temp cannot pull
below 30°F (-1°C) within 5
minutes w/door open, see:
• Condenser Air Flow
• Compartment or evaporator
thermistor misread
• Sealed system fault: leak or
inefficient compressor
4. Evaporator Temp 35°F (2°C) or
higher after 5 minutes w/door
open, see:
• Condenser Air Flow
• Power to compressor fault
• Sealed system fault: leak,
restriction or inefficient com-
pressor
NOTE: "Pointers" do not apply to
cabinet initial pulldown from
ambient temperatures.
NOTE: To clear flashing SER-
VICE indicator after repairs,
power OFF, then back ON.
NOTE: To clear non-flashing
SERVICE indicator after repairs,
press door ajar alarm bell
ON/OFF key for 15 seconds.
(Continued)
Series
Series
2
2
(600- )
(600- )
POSSIBLE CAUSE
Door Ajar
a. Food product obstruction
b. Door/cabinet hinge problem
Condenser Air Flow
a. Dirty condenser
b. Condenser fan blade obstructed or
blade is loose
c. Condenser fan motor disconnected
d. Condenser fan motor defective
e. No power from control board to con-
denser fan (Does not apply to single
compressor models)
(NOTE: A compressor must be running)
Light ON with Door Closed
a. Switch depressor missing or bent, not
depressing light switch
b. Faulty light switch
Evaporator Fan Fault
a. Switch depressor missing or bent, not
depressing fan switch
b. Fan blade obstructed or out of position
c. Faulty fan switch
(NOTE: A compressor must be running)
d. Evaporator. fan motor disconnected
e. Evaporator fan motor defective
(NOTE: Compressor must be running)
Evaporator Thermistor Disconnected or
Shorted
Compartment or Evaporator Thermistor
Misread
Evaporator Heavily Frosted
a. Door or drawer ajar
b. Evaporator fan fault
c. Thermistor misread
8-11
Troubleshooting Guides
TEST / ACTION
a. Move obstruction.
b. Check and replace hinge if defective.
a. Clean condenser.
b. Remove obstruction or tighten nut on motor
shaft.
c. Check electrical connections from motor to
J7-1 on control board, or from motor to com-
pressor on single compressor models.
Reconnect / repair connections.
d. Check for 115V AC to motor, replace motor
if defective.
e. Check for 115V AC at J7-1 on control board
(with compressor running). Replace board if
defective.
a. Replace/straighten switch depressor.
b. Check operation of light switches, lights off
when switch is depressed. Replace switch if
defective.
a. Replace/straighten switch depressor.
b. Move obstruction or reposition blade.
c. Check for 115V AC to fan switch, depress
fan switch and check for 115V AC from
switch to motor. Replace switch if defective.
d. Check electrical connections of motor.
Reconnect / repair bad connections.
e. Check for 115V AC at fan motor with fan
switch depressed. Replace motor if defec-
tive.
Check for "EE" & "rE" in diagnostic mode.
Check refrigerator evaporator thermistor
electrical connections from thermistor to J1
on control board. Reconnect / repair con-
nections. Check resistance of refrigerator
evaporator thermistor for 30,000 to 33,000
ohms at 32°F (0°C). Replace if defective.
Check resistance of refrigerator compart-
ment and evaporator thermistors for 30,000
to 33,000 ohms at 32°F (0°C). Replace if
defective.
a. See Door Ajar above.
b. See Evaporator Fan Fault above.
c. See Thermistor Misread above.
#3758407 - Revision B - August, 2006