Electronic Control System
3-4
#7019014 - Revision A - October, 2010
Built-In (BI) Series
Built-In (BI) Series
MAIN CONTROL
BOARD
P18
3
P6
P15
P16
85
P14
1164
P6
P9
P8 P7
P5
P2
P3
P1
DEFROST HTR
COMP2
COMP1
MAIN LIGHTS
L1
NEUTRAL
L1
Figure 3-2. Control Board Layout
Figure 3-3. Control Board Summary Table
CONTROL BOARD LAYOUT AND SUMMARY TABLE
The electrical connection points on the main control board are labeled alphanumerically (See Figure 3-2). These
labels correspond with the alphanumeric control board summary table, located on wiring diagrams (See Figure 3-3).
By referencing the summary table, it is possible to identify which components are connected at which connection
points on the main control board.
NOTE: All components on control board are non-replaceable. If problems with control board are identified, the
complete control board must be replaced.
P16-5
P16-6
P16-7
P16-8
P16-9
P18-1
P18-2
P18-3
P18-4
P18-5
P18-6
P14-5
P14-6
P14-1
P14-2
P14-3
P14-4
P15-8
P15-7
P15-6
P15-5
P15-4
P15-3
P15-1
P15-2
CIRCUIT
P16-1
P16-2
P16-3
P16-4
ICE MAKER ACCESSORIES
WATER VALVE INPUT
REFRIGERATOR DOOR INPUT
WATER FILTER RESET SWITCH
FREEZER DOOR INPUT
UNUSED
ICE MAKER
CONDENSER FAN
AIR FILTER LIGHT
UNUSED
REF BI-METAL
UNUSED
UNUSED
ICE MAKER WATER VALVE
120 VOLT CIRCUITS
POWER IN (L1)
UNUSED
POWER IN (L1)
NEUTRAL
UNUSED
UNUSED
DEFROST HEATER
MAIN LIGHTS
UNUSED
COMPRESSOR #2
COMPRESSOR #1
UNUSED
UNUSED
UNUSED
WATER VALVE
DESCRIPTION
POWERS FILL TUBE AND ACCESSORIES
---
---
SENSES IF REF DOOR IS OPEN
SENSES WATER VALVE ACTIVATION
SENSES WHEN DEF HEATER SHUTS OFF
SENSES IF FREEZER DOOR IS OPEN
POWERS ICE MAKER
CONDENSER FAN
AIR FILTER LIGHT
SENSES WATER FILTER
UNUSED
UNUSED
POWER INTO BOARD
NEUTRAL INTO BOARD
POWER INTO BOARD
POWERS MAIN LIGHTS
POWERS COMPRESSOR
POWERS REF COMPRESSOR
POWERS OFF HEATER
POWERS WATER VALVE
POWERS IM WATER VALVE
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
UNUSED
FUNCTION
WHITE/BLUE
ORANGE/RED
GRAY/WHITE
ORANGE/BLACK
-
PINK
WHITE/RED
RED
TAN
-
ORANGE
BLACK
-
-
WHITE
-
BLACK
BLUE
YELLOW
PURPLE
GRA
Y
-
-
-
-
COLOR
---
-
--
TAN/WHITE
EVAPORATOR FAN RETURN
CRISPER LIGHT POWER
CRISPER LIGHT RETURN
AIR FILTER FAN OUTPUT
AIR FILTER FAN RETURN
AIR FILTER LIGHT OUTPUT
AIR FILTER LIGHT RETURN
PWM DRIVE OUTPUT
PWM DRIVE OUTPUT
EVAPORATOR FAN POWER
TACHOMETER INPUT
TACHOMETER INPUT
WATER FLOW SENSOR INPUT
FLOW METER POWER
FLOW METER RETURN
---
---
SENSES TEMPERATURE
SENSES TEMPERATURE
SENSES TEMPERATURE
SENSES TEMPERATURE
---
---
SENSES TEMPERATURE
SENSES TEMPERATURE
SENSES TEMPERATURE
SENSES TEMPERATURE
---
---
---
---
---
---
CRISPER LIGHT 12 VDC POWER
CRISPER LIGHT GROUND RETURN
AIR FILTER LIGHT
AIR FILTER LIGHT
FREEZER EVAPORATOR FAN
REF EVAPORATOR FAN
EVAPORATOR FAN 12 VDC POWER
FREEZER EVAPORATOR FAN
LOW VOLTAGE CIRCUITS
REF EVAPORATOR FAN
UNUSED
FLOW METER 12V DC POWER
UNUSED
REFRIGERATOR EVAPORATOR
FREEZER CABINET
FREEZER EVAPORATOR
UNUSED
UNUSED
FREEZER EVAPORATOR
FREEZER CABINET
UNUSED
REFRIGERATOR EVAPORATOR
UNUSED
THERMISTER CIRCUITS
EVAPORATOR FAN GROUND RETURN
FLOW METER
P3-3
P3-7
P3-6
P3-4
P3-5
P5-9
P5-8
P5-7
P5-6
P5-5
P5-16
P5-15
P5-14
P5-13
P5-12
P5-11
P5-10
P5-4
P5-3
P5-2
P5-1
CIRCUIT
UNUSED
FLOW METER
UNUSED
UNUSED
UNUSED
REF CABINET
REF CABINET
UNUSED
UNUSED
DESCRIPTION
P2-1
P2-2
P2-3
P2-4
P2-5
P2-6
P2-7
P2-8
P2-9
P2-10
P2-1
1
P2-12
P2-13
P2-14
P2-15
CIRCUIT
P2-16
P2-17
CIRCUIT
P3-2
P3-1
UNUSED
AIR FILTER FAN
AIR FILTER FAN
UNUSED
DESCRIPTION
UNUSED
DESCRIPTION
UNUSED
UNUSED
FUNCTION
UNUSED
UNUSED
FUNCTION
UNUSED
FUNCTION
WHITE/BROWN
YELLOW/BROWN
WHITE/BLACK
-
BROWN
BLACK/WHITE
BROWN
BLUE/BLACK
BROWN
BLUE
BROWN
BLUE/WHITE
BROWN
BLUE/YELLOW
BROWN
BLUE/ORANGE
BROWN
BLUE/RED
----
---
----
----
COLOR
-
-
-
-
-
-
WHITE
RED/BLACK
YELLOW
RED
BLUE/WHITE
COLOR
-
-
-
BLUE
COLOR
UNUSED
UNUSED
-
UNUSED
UNUSED
-
-
S x S CONTROL BOARD SUMMARY
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