Sub-Zero 600 Series Service Manual

Troubleshooting Guides
600 Series
(Prior to #1810000)
8-10
#3756270 - Revision B - January, 2006
Condenser Air Flow
a. Dirty condenser
b. Condenser fan blade obstructed
c. Condenser fan motor disconnected or
defective
d. No power from control board (excluding
601R and 601F)
(NOTE: A compressor must be running)
Possible early signs of Sealed System leak
Refrigerator evaporator thermistor malfunc-
tion
Freezer compartment thermistor malfunction
Refrigerator compartment thermistor mal-
function
Control set too low
Thermistor malfunction
Ribbon cable to control board incorrectly
attached to control board or ribbon cable bro-
ken
Defective Membrane Switch
G. Compartment Temperatures
Normal w/ “VACUUM CON-
DENSER” flashing
(NOTE: To clear error indicator
after repairs, power OFF then
back ON)
H. Comp
artment Temperatures
Normal w/ “SERVICE” flash-
ing
(NOTE: To clear error indicator
after repairs, power OFF then
back ON)
I. W
arm or Normal Freezer
T
emp. w/ “EE” displayed for
freezer temp. and “SERVICE”
flashing
(NOTE: To clear error indicator
after repairs, power OFF then
back ON)
J. W
arm or Normal Refrig.
Temp. w/ “EE” displayed for
refrigerator temp. and “SER-
VICE” flashing
(NOTE: To clear error indicator
after repairs, power OFF then
back ON)
K. Freezer and/or Refrigerator
Compartment too cold
L. Membrane switch on control
board malfunctioning
a. Clean condenser.
b. Remove obstruction.
c. Check electrical connections, reconnect/repair.
Check power to motor, replace motor if defective.
d. Check COND FAN terminal on control board for
115V. (w/comp. running). Replace board if defective.
• See following SEALED SYSTEM TROU-
BLESHOOTING GUIDE
Check refrigerator evaporator thermistor connection and
thermistor Ohms = 32,500 at 32°F and 10,000 at 77°F.
Repair connection or replace thermistor if defective.
Check freezer evaporator thermistor connection and ther-
mistor Ohms = 32,500 at 32°F and 10,000 at 77°F.
Repair connection or replace thermistor if defective.
Check refrigerator evaporator thermistor connection and
thermistor Ohms = 32,500 at 32°F and 10,000 at 77°F.
Repair connection or replace thermistor if defective.
Check set-points. If low, adjust.
If “EE” is displayed in place of temperature during diag-
nostic mode, thermistor is disconnected or faulty. Check
thermistor connection and Ohms = 32,500 at 32°F and
10,000 at 77°F. Repair connection or replace thermistor if
defective.
Check ribbon cable at control board. Label on cable ter-
minal housing must be oriented toward arrow on control
board. If connected properly, check for breaks in cable.
Replace control panel if cable is defective.
See MEMBRANE SWITCH/RIBBON CABLE TEST at
end of troubleshooting guides.
Problem Possible Cause Test/Action

Sub-Zero 600 Series Specifications

General

Brand	Sub-Zero
Model	600 Series
Category	Refrigerator
Language	English