Sub-Zero 700-3 BASE Technical & Service Manual page 29

Integrated
Monitor Icemaker System and Display If Service is Needed
The microprocessor observes the power 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 and an error code is logged (EC
30). (See Figure 3-24) If this happens five consecutive times, ICE and SERVICE on the LCD will flash and the ICE
ON/OFF key will be disabled (See Figure 3-25).
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 by pressing the ICE ON/OFF key.
NOTE: When in Sabbath Mode, icemaker system is disabled. Sabbath Mode will be covered later.
HIGH VOLTAGE SCHEMATIC
TAN
J6
J5
1. 115 Volts AC
TAN
Figure 3-24. 700BCI-3 Signal Trace Schematic - Icemaker Operation and Solenoid Monitoring
SERVICE
ICE
Figure 3-25. ICE & SERVICE Flashing if solenoid energized 15 seconds, every 24 hours, 5 consecutive times
3
(700- BASE)
115 VOLTS
60 CYCLES
L1
J2
WHITE
PIN 1 P4
BLACK
P3
MAIN BOARD
P1
P2
PIN 1
J4
PIN 1
PIN 1
PIN 1
J3
to solenoid
monitored.
FREEZER
Series
NEUTRAL
WHITE
2. If solenoid
energized
more then
15 seconds,
power to IM
system
M
interrupted
for 24 hours.
ICEMAKER
ICEMAKER
THERMAL
(OPTIONAL)
SWITCH
FUSE
COLDER WARMER COLDER WARMER
3-17
Electronic Control System
WHITE
M
M
M
ICEMAKER
VALVE
TAN
ICE
REFRIGERATOR
ON/OFF
ON/OFF
#3758424 - Revision B - December, 2005
UNIT
ON/OFF