Sub-Zero Built-In Series Assembly page 30

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Monitor Compressor Run Duration, Displays If Service is Needed
The microprocessor observes the changing state of the compressor relays on the control board to determine the
length of compressor run time
(Freezer = 6 hours / Refrigerator = 4 hours), five consecutive times, a fault code is logged, defrost is initiated, and
the service icon will flash. If approximately twenty-four (24) hours worth of 100% run periods occur, and the com-
partment temperature does not fall to at least the average of the set point and low off-set temperature (and the door
is not opened during the last run period), then the service icon will flash and the alarm will chime
NOTES:
• If the unit is ever switched OFF then back ON, compressors will not energize for at least three (3) minutes. This
minimum OFF time is used to protect the compressor and its electricals.
• To clear fault indicators and Fault Codes the problem must be corrected, then press the ALARM key for fifteen
(15) seconds. Failure to clear Fault Codes will result in the highest priority fault indicator reappearing in the LCD
when the unit is
switched back ON.
Power to compressors
monitored; fault code
logged if 100% run
observed and service
icon appears; if sever-
al 100% runs occur,
service icon flashes
and alarm chimes
LIGHTS ICE MAKER
Figure 3-51. the Service Icon Flashing & Alarm Chiming = Service Needed Immediately
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Main Menu
Built-In (BI) Series
Built-In (BI) Series
(See Figure 3-50). Other than during initial pull down, if a compressor runs 100%
HIGH VOLTAGE
BLACK
WATER FILTER SWITCH
N.O.
NEUTRAL
L1
L1
MAIN LIGHTS
COMP1
COMP2
DEFROST HTR
MAIN
CONTROL
BOARD
Figure 3-50. Signal Trace Schematic: Monitoring Compressor Run Times
MAX ICE COLDER WARMER
Main Menu Built-In Series Menu
Built-In Series Menu
L1
115 VOLTS
NEUTRAL
60 CYCLES
WHITE/BLUE
FZ DOOR SWITCH
N.C.
YELLOW YELLOW
N.C.
YELLOW BROWN
REF DOOR SWITCH
ORANGE/BLACK
ORANGE
WHITE/BLUE
GRAY/WHITE
BLUE
DEFROST TERMINATOR
COLDER
3-31
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Electronic Control System
(See Figure
WHITE
ISOLATION VALVE
660 Ω
WATER VALVE
TAN/WHITE
TAN
160 Ω
PINK IM
CONDENSER FAN MOTOR
M
WHITE/RED
RED/WHITE
AIR FILTER LIGHT
FREEZER LIGHTS
ORANGE/BLACK
ORANGE
REF LIGHTS
CRISPER LIGHTS
FILL-TUBE HEATER
2300-2900 Ω
DEF HEATER
27.9-30.9 Ω
REFRIGERATOR COMPRESSOR
STARTING RELAY
GRAY
FREEZER COMPRESSOR
STARTING RELAY
PURPLE
WARMER PURE AIR
#7019014 - Revision A - October, 2010
Table of Contents
3-51).
WHITE
WHITE
WHITE
WHITE
WHITE
WHITE
WHITE
WHITE
WHITE
WHITE
WHITE
WHITE
WHITE
WHITE
WHITE
WHITE
ALARM POWER
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