Sub-Zero 700TC-3 Service Manual page 107

Integrated
Integrated
PROBLEM
(Continued)
J. Warm Refrigerator
Temperatures without
"SERVICE" Flashing
Pointers:
Refrigerator door must be open
and compressor running for five
minutes.
1. "Sr" appears during Diagnostic
Mode, see:
• Unit in Showroom Mode
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:
• Warm food load
• High room ambient
• Door ajar
• 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 non-flashing
SERVICE indicator after repairs,
press door ajar alarm bell
ON/OFF key for 15 seconds.
3
3
(700- T ALL)
(700- T ALL)
POSSIBLE CAUSE
Lights ON with Door/ Drawers Closed
a. Top hinge cover missing, not depress-
ing light switch
b. Faulty light switch
Evaporator Fan fault
a. Top hinge cover missing 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)
Compartment or Evaporator Thermistor
Misread
Evaporator Heavily Frosted
a. Door or drawer ajar
b. Evaporator fan fault
c. Thermistor misread
Power to Compressor Fault
NOTE: For 700TF/I-3, see Error Code
Troubleshooting Guide
Sealed System Fault
• Sealed System Leak
• Sealed System Restriction
• Inefficient Compressor
8-13
Series
Series Troubleshooting Guides
a. Replace hinge cover.
b. Check operation of light switches, lights off
when switch is depressed. Replace switch if
defective. (NOTE: there are two light switch-
es in the drawer area)
a. Replace hinge cover.
b. Move obstruction or reposition blade.
c. Check for 115V AC to fan switch, depress
fan switch and check for 115V AC from fan
switch. Replace switch if defective.
(NOTE: there are two fan switches in the
drawer area)
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 resistance of refrigerator compart-
ment and evaporator thermistors for 30,000
to 33,000 ohms at 32°F (0°C). Replace
thermistor if defective.
a. See Door or Drawer Ajar on previous page.
b. See Evaporator Fan Fault above.
c. See Compartment & Evaporator Thermistor
Misread above.
Check for 115V AC at E7 and/or E6 on con-
trol board. Replace control board if defec-
tive.
See Sealed System Troubleshooting Guide
#3758412 - Revision B - December, 2006
TEST / ACTION