Wiring Diagram
ERF2500++ISO
REFRIGERATOR
CONTROL
RIBBED
(NEUTRAL)
NON-RIBBED
(LINE)
COMPRESSOR
GROUND
RH LIGHT
SWITCH
(DOOR OPEN)
LH LIGHT
SWITCH
(DOOR OPEN)
PUR/BLK (N/O)
PURPLE (COM)
YEL/BLK (COM)
YEL/GRY (N/C)
1
2
4
66
4
2
1
YEL/GRY (N/C)
YEL/BLK (COM)
PURPLE (N/O)
PURPLE (COM)
THERMAL
CUT-OUT
THERMAL
CUT-OUT
LINE
CAB. GROUND
RL1
LINE
ICEMAKER
EVAPORATOR
HEATER
FREEZER
EVAPORATOR
HEATER
FF LEDS
NEUTRAL
J3-3
J3-1
LED POWER
BOARD
RL2
AUGER
MOTOR
PURPLE
BLU/WHT
CUBE/CRUSH
SOLENOID
TWIST ICEMAKER
WATER VALVE
YEL
TAN
DISPENSER
WATER VALVE
RED
CONDENSER FAN
YEL/BLK
NEUTRAL
RL3
RL6
RL9
RL8
RL7
U2 (SSR1)
RL4
POWER CORD
SEE FLAPPER
RELAY BOARD
COMPRESSOR
CONTROL SIGNAL
RH2
LH2
USER
INTERFACE
DISPENSER
PADDLE
DISPENSER
LIGHT
FLAPPER
POSITION
SWITCH
+12V DC
M
IM FAN
MOTOR
TWIST
MOTOR
M
IM2
+5V DC
BAIL ARM
SWITCH
TRAY
SENSOR
12V DC
DAMPER
MOTOR
OUT2A
BRN/YEL
BLK/YEL
WHT/YEL
AT1
OUT2B
OUT1A
OUT1B
RED/YEL
PIN 6
PIN 5
PIN 3
PIN 2
GREY
GREY
GRN/BLU
DK. BLU
BLK
WHT
RED
MB1
YEL/PNK
YEL/PNK
RH1
YEL/GRY
YEL/GRY
PIN 5
PIN 8
FREEZER DOOR
SWITCH
(DOOR OPEN)
BLK
BLK/ORN
YEL/PNK
YEL/PNK
PIN 4
PIN 5
MC1
VARIABLE SPEED
COMPRESSOR/ INV.
BLK
LT. BLU
BASE PLATE
GROUND
SPLICE
TAN
YEL
MC1
MB2
MC1
RH1
IM1
TAN/YEL
DIODE
DIODE
SPLICE
SPLICE
SPLICE
YEL/BLU
SPLICE
MAIN INLET
WATER VALVE
FREEZER ICEMAKER
WATER VALVE
RED/BLK
BLK/WHT
12 VDC
GRN/YEL
BASE PLATE
GROUND
PIN 1
PIN 4
FREEZER DOOR
SWITCH
(DOOR OPEN)
BLK
BLK/ORN
YEL/PNK
YEL/PNK
COIL COVER
GROUND
BEHIND FRONT
LEFT ROLLER
FREEZER
ICE MAKER
(SEE FZ ICE
MAKER DIAGRAM)
4
3
2
1
BLK
LT.BLU
BRN
YEL/BLU
GRN/YEL
PIN 1
PIN 3
PIN 2
PIN 4
POWER
CONTROL SIGNAL
+5V DC
+12V DC
+5V DC
COMM.
GND
EVAPORATOR
FAN (DC)
RED/WHT
MB1
BRN/WHT
YEL/WHT
PIN 2
PIN 1
PIN 3
RH1
LH1
BRN/BLK
BRN/BLU
RH LIGHT
SWITCH
(DOOR OPEN)
LH LIGHT
SWITCH
(DOOR OPEN)
PUR/BLK (N/O)
PURPLE (COM)
YEL/BLK (COM)
YEL/GRY (N/C)
1
2
4
6
6
4
2
1
YEL/GRY (N/C)
YEL/BLK (COM)
PURPLE (N/O)
PURPLE (COM)
J2
1
5
J1
4
PIN 3
PIN 2
PIN 1
2
3
4
1
1
2
CABINET BY
COMPRESSOR
GRN/YEL
RH3
PIN 1
MULLION HEATER
PIN 1
LH1
PIN 4
PIN 2
FLAPPER & SUMP
HEATER
RIGHT DOOR
FLANGE
FLIP MULLION COVER
RIGHT HINGE
GROUND
GRN/YEL
SPLICE
IM1
PIN 4
3
J4
4
5
6
1
2
9
11
12
5
J5
6
3
4
11
J5
7
12
J5
8
1
J7
8
2
3
4
7
5
6
1
J9
OR
J11
2
3
4
J1
1
2
3
J2
2
J3
2
J3
1
J2
3
J3
7
4
J3
6
3
5
NEUTRAL
CABINET
WRAPPER
AUGER MOTOR
PIN 5
PIN 2
PIN 3
PIN 4
PIN 7
WHT
RED
BLU
YEL
PIN 3
PIN 6
PIN 4
PIN 5
PIN 1
PIN 2
RED
BLK
PIN 5
PIN 3
PIN 2
PIN 1
PIN 3
PIN 5
PIN 4
PIN 5
PIN 4
PIN 3
PIN 7
PIN 8
PIN 9
PIN 3
PIN 5
PIN 6
LT.BLU/BLK
BLK/PNK
YEL/BLK
LT. BLU
1
2
1
2
GRN/BLU
DK. BLU
RED/BLK
BLK/WHT
RED
BLK
PUR/BLK
BLU/WHT
BRN/BLU
BRN
RH1
PIN 6
PIN 1
LT. BLU
BLK
BLK
GRN/YEL
LT. BLU
2
1
3
PIN 6
PIN 2
SPLICE
SPLICE
LT. BLU/BLK
1
2
2
3
4
1
LT. BLU
BLK
BRN/BLK
BRN/BLU
1
2
3
4
GND
+12VDC
RELAY
LINE
NEUTRAL
FLAPPER
SOLENOID
(SEE J4
PINS 5,6)
RED/YEL
BRN/YEL
BLK/YEL
WHT/YEL
J5
1
5
2
4
3
6
J4
3
2
1
3
1
2
AC SIDE
DC SIDE
LT. BLU
LT. BLU
LT. BLU
LT. BLU
LT. BLU
BLK
BOARD-MOUNTED
AMBIENT THERMISTOR
1
J8
2
+5V DC
+5V DC
+5V DC
+12V DC
+12V DC
+12V DC
GND
REVERSIBLE 12V DC
FLAPPER
RELAY BOARD
TO PERFECT TEMP
DRAWER HOUSING
YEL/BLU
BLK/PNK
+12V DC
+12V DC
+12V DC
+12V DC
GND
COMM
CUBE/CRUSH
SOLENOID
FREEZER
SENSOR
FRESH FOOD
SENSOR
FREEZER
EVAPORATOR
SENSOR
MB1
IM1
GRY/WHT
GRY/WHT
GRY/BLK
GRY/BLK
+5V DC
+5V DC
+5V DC
PIN 7
PIN 8
1
2
IM EVAPORATOR
SENSOR
PIN 6
PIN 7
PIN 6
PIN 9
GRY/RED
GRY/RED
GRY/WHT
GRY/WHT
5
J6
6
7
8
11
12
3
4
GRY/WHT
GRY/WHT
+5V DC
LT. BLU
RL5
YEL/RED
PIN 2
PIN 9
BLK
LT. BLU/BLK
WHT/GRN
WHT/RED
SEE FREEZER
LEDS
+12V DC
LT BLUE
LT BLUE
PTD DRAWER
HEATER THERM.
PTD DRAWER
HEATER
WHITE/YELLOW
BLACK/YELLOW
BROWN/YLW
RED/YELLOW
4
3
2
1
PTD
DAMPER
RED
BLACK
PTD
HEATER
GROUND
PTD
FAN
J2
1
2
3
4
J3
3
2
1
4
3
2
1
LT. BLU
YEL/BLK
GRN/YEL
BLK/PNK
1
J7
2
3
4
5
6
7
1
J11
2
3
4
1
J6
2
3
4
1
J8
2
PTD COVER
THERMISTOR T1
(PTD DRAWER)
TO THE TWO LEDS
IN THE PTD COVER
ORN
GRY
TO LED
POWER BOARD
(J1)
CONNECTION TO
PTD COVER
RED/BLACK
PINK/WHITE
WHITE/PINK
BLACK/WHITE
WHITE
WHITE
PTD USER
INTERFACE
BOARD
J3
PTD USER INTERFACE
KEYPAD ASSEMBLY
FLEX CABLE TO KEYPAD
J2
1
2
3
4
PIN 1
PIN 2
PIN 3
PIN 4
PIN 5
PIN 6
PIN 7
PIN 8
PTD
MAIN PCBA
PTD ERROR CODES:
9X - SHORTED KEY/BUTTON,
WHERE THE "X" IS:
1 FOR "ON/OFF"
2 FOR "+"
3 FOR "C/F"
4 FOR "-"
5 FOR "LOCK"
6 FOR "V" DOWN ARROW KEY
7 FOR "^" UP ARROW KEY
2X - OPEN NTC,
WHERE THE "X" IS:
1 FOR THE PTD DRAWER NTC
3X - SHORTED NTC,
WHERE THE "X" IS:
1 FOR THE PTD DRAWER NTC
CE - LOSS OF COMMUNICATION
BETWEEN UI AND MAIN PCB
HI
F - UCL OVER TEMP
TIME OUT EXCEEDED
LO
F - LCL UNDER TEMP
TIME OUT EXCEEDED
PTD MODELS ONLY
J1-3
J1-1
J3-3
GND
+12V
J3-1
NEUTRAL
FRESH FOOD
POWER (120V AC)
RG-1
PCBA
LED POWER
LED LIGHT WIRING
FZ-1FZ-2
REFRIGERATOR LEDS
RG-2
RG-6
RG-3
RG-5
RG-4
FREEZER LEDS
WHT/BRN
WHT/BRN
WHT/BLU
WHT/BLU
1
2
3
4
1
WHT/BLU
2
WHT/BLU
3
WHT/BRN
4
WHT/BRN
WHT/BRN
4
3
2
1
WHT/BLU
LED
LED
LED
LED LED
WHT/BRN
WHT/BRN
WHT/BLU
WHT/BLU
WHT/BRN
WHT/BRN
WHT/BLU
WHT/BLU
1
2
3
4
1
2
3
4
4
3
2
1
4
3
2
1
WHT/RED
WHT/RED
WHT/GRN
WHT/GRN
WHT/RED
WHT/GRN
LED LED
1
TYPICAL LED CONNECTOR
RG-2
RG-3
RG-4
RG-5
RG-6
RG-7
RG-8
RG-9
PTD LEDS
RG-8
RG-9
4
3
2
1
4
3
2
1
ORN
ORN
GRY
GRY
ORN
GRY
LED LED
RG-7
WHT/BRN
4
3
2
WHT/BLU
LED
RG-1
1
WHT/BLU
2
WHT/BLU
3
WHT/BRN
4
WHT/BRN
LED
WHT/BLU
WHT/BRN
1
WHT/BRN
WHT/BLU
GRY
7
GRY
2
ORN
ORN
1
8
WHT/BRN
WHT/BLU
J1-3
J1-1
LED
POWER
BOARD
J4-3
J4-4
ERF2500++ISO
REFRIGERATOR
CONTROL
MC1
BACK VIEW
RH1
RH2
LH1
LH2
RH3
INLINE CONNECTOR ABBREVIATION KEY
ABBR. EXPLANATION
AT1 9 PIN CONNECTION AT AIR TOWER
IM1
9 PIN CONNECTION IN FRESH
FOOD ICEMAKER COMPARTMENT
IM2
6 PIN CONNECTION IN FRESH
FOOD ICEMAKER COMPARTMENT
LH1
6 PIN CONNECTION AT THE LEFT
DOOR UPPER HINGE
LH2
5 PIN CONNECTION AT THE LEFT
DOOR UPPER HINGE
MB1
9 PIN CONNECTION IN THE MAIN
BOARD HOUSING BEHIND THE TOE
GRILLE
MB2
4 PIN CONNECTION IN THE MAIN
BOARD HOUSING BEHIND THE TOE
GRILLE
MC1
9 PIN CONNECTION IN THE
MACHINE COMPARTMENT TO THE
LEFT OF THE COMPRESSOR
RH1
9 PIN CONNECTION AT THE RIGHT
DOOR UPPER HINGE
RH2
5 PIN CONNECTION AT THE RIGHT
DOOR UPPER HINGE
RH3
2 PIN CONNECTION WITH THICKER
WIRES AT THE RIGHT DOOR UPPER
HINGE
1
3
7
9
1
3
7
9
3
3
1
CATCH
1
5
LATCH
1
5
AT1, IM1, MB1, & RH1
LH1
LH2 & RH2
MC1
IM2
RH3
MB2
1
1
3
9
7
9
3
7
1
3
1
6
4
6
4
3
1
1
2
4
3
3
1
2
4
2
1
2
1
4
6
4
6
MB1
AT1
FRONT INSIDE
VIEW
IM1
IM2
MB2
LED POWER
BOARD
3
1
4
2
1
1
1
1
1
1
1
4
J1
J2
J3
J5
J7
J4
J6
J9
J11
2
11
12
1
BOARD VIEW
J8
AMBIENT
TEMP
SENSOR
RL1
RL2
RL5
RL3
RL6
RL9
RL8
RL4
RL7
U2
Wire Diagram A06577001