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Sub-Zero Wolf ICB700 Series

Sub-Zero Wolf ICB700 Series
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Page 22
3-17
Electronic Control System
7011902 - Revision A - October, 2009
International Integrated
International Integrated
(ICB700 Base)
(ICB700 Base)
Series
Series
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.
Figure 3-25. ICE & SERVICE Flashing if solenoid energized 15 seconds, every 24 hours, 5 consecutive times
SERVICESERVICE
ICE
ICE
Figure 3-24. ICB700BCI Signal Trace Schematic - Icemaker Operation and Solenoid Monitoring
L1
NEUTRAL
J5
MAIN BOARD
PIN 1
J3
PIN 1
J4
J6
PIN 1
PIN 1
P2
PIN 1
J2
P1
P3
P4
BLACK
GRAY
WHITE
WHITE
WHITE
WHITE
TAN
M
M
M
M
ICEMAKER
THERMAL
FUSE
ICEMAKER
SWITCH
ICEMAKER VALVE
PINK
TANTAN
220-240 VOLTS
50/60 CYCLES
HIGH VOLTAGE SCHEMATIC
WHITE
WHITE
1. 230 Volts AC
to solenoid
monitored.
2. If solenoid
energized
more then
15 seconds,
power to IM
system
interrupted
for 24 hours.

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