Sub-Zero 700TC-3 Service Manual page 31

Integrated
Integrated
Monitor Icemaker System and Display If Service is Needed
The microprocessor observes the 115 Volts AC supplied to the icemaker water valve solenoid. If the solenoid is
energized for more than 15 seconds, power to the icemaker system is disabled for 24 hours (See Figure 3-28), and
an error code is logged (EC 30). If this happens five consecutive times, ICE and SERVICE on the LCD will flash
(See Figure 3-29), and the ICE ON/OFF key will be disabled.
NOTE: To clear the ICE and SERVICE error indicators, and reactivate the ICE ON/OFF key, the problem must be
corrected, then the unit must be switched OFF and back ON, and the Alarm key must be pressed for 15 seconds to
clear the Error Code.
NOTE: To allow ice to freeze fully and reduce effects of low water pressure, power to the icemaker system is inter-
rupted for 45 minutes after each ice harvest. This can be bypassed for service purposes by switching the icemaker
system OFF, then back ON using the ICE ON/OFF key.
NOTE: When in Sabbath Mode, the icemaker system is disabled. Sabbath Mode will be covered later.
HIGH VOLTAGE
BLACK
J5
J7
E2 E7 E10 E6
J3
J4
J2 J1
Figure 3-28. 700TC/I-3 Signal Trace Schematic (High Voltage) of Icemaker Electrical System
SERVICE
ICE
Figure 3-29. ICE & SERVICE Flashing = Solenoid Energized 15 sec., every 24 hrs., 5 consecutive times
3
3
(700- T ALL)
(700- T ALL)
115 VOLTS
L1 NEUT
60 CYCLES
WHITE
115 Volts to water valve solenoid
is monitored by microprocessor.
If voltage supply lasts more than
J6
15 seconds, power to icemaker
system is disabled.
TAN
ICEMAKER
PINK
SWITCH
WHITE/BLUE
FREEZER
Series
Series Electronic Control System
WHITE
M
M
TAN
ICEMAKER
M
Fill tube heater is energized
whenever icemaker system
is switched "ON" and ICE
appears on LCD
2300-2900 OHMS
COLDER WARMER COLDER WARMER
3-17
#3758412 - Revision B - December, 2006
M
M
WATER
VALVE
FILL TUBE
HEATER
ICE
REFRIGERATOR
ON/OFF
ON/OFF
UNIT
ON/OFF