GE Monogram ZIS360NR How to use

PUB # 31-9117 04/04
MODEL SERIES:
Monogram
Inverter Compressor Side-By-Side
Refrigerators
GEA01265
GE Consumer & Industrial
TECHNICALSERVICE GUIDE
ZIS360NR
ZIS420NR
ZIS480NR
ZIS_360DR
ZIS_420DR
ZIS_480DR

– 2 –
IMPORTANT SAFETY NOTICE
The information in this service guide is intended for use by
individuals possessing adequate backgrounds of electrical,
electronic, and mechanical experience. Any attempt to repair a
major appliance may result in personal injury and property
damage. The manufacturer or seller cannot be responsible for the
interpretation of this information, nor can it assume any liability in
connection with its use.
WARNING
To avoid personal injury, disconnect power before servicing this
product. If electrical power is required for diagnosis or test
purposes, disconnect the power immediately after performing the
necessary checks.
RECONNECTALLGROUNDINGDEVICES
If grounding wires, screws, straps, clips, nuts, or washers used to
complete a path to ground are removed for service, they must be
returned to their original position and properly fastened.
GE Consumer & Industrial
Technical Service Guide
Copyright © 2004
All rights reserved. This service guide may not be reproduced in whole or in part
inany form without written permission fromtheGeneralElectricCompany.

– 3 –
Table of Contents
Technical Data ........................................................................................................................ 5
Model Nomenclature .............................................................................................................. 6
Rating Plate ...................................................................................................................... 6
Mini-Manual ....................................................................................................................... 6
Serial Number ...................................................................................................................6
Component Locator Views..................................................................................................... 7
Cabinet .................................................................................................................................. 10
Machine Compartment ................................................................................................... 10
Door Closure Mechanism.................................................................................................11
Doors and Hinges .............................................................................................................11
DoorGaskets.................................................................................................................... 12
Rollers and Leveling....................................................................................................... 12
Ice and Water Dispenser ...................................................................................................... 13
Controls ............................................................................................................................ 13
Water Valve and Water Tank ......................................................................................... 14
Airflow ................................................................................................................................... 15
Damper ............................................................................................................................ 15
Fans ....................................................................................................................................... 16
Evaporator Fan ................................................................................................................ 16
Condenser Fan ................................................................................................................ 20
DefrostSystem ...................................................................................................................... 21
Adaptive Defrost .............................................................................................................. 21
Normal Operating Characteristics.................................................................................. 21
Defrost Heater..................................................................................................................22
Evaporator Thermistor .................................................................................................... 23
Defrost Overtemperature Thermodisc ........................................................................... 23
Control System ...................................................................................................................... 24
Touch Panel and Temperature Control Board.............................................................. 24
Thermistors ...................................................................................................................... 25
Main Control Board ......................................................................................................... 26
Main Control Board Locator Tables ............................................................................... 27
Thermistors ...................................................................................................................... 32
Climate Control Drawer........................................................................................................ 33
Strip Circuit ...................................................................................................................... 33
Component Locator View............................................................................................... 34
Operation ......................................................................................................................... 35
Temperature Table.......................................................................................................... 36
Climate Control Drawer Top Panel (Mullion) ................................................................ 37
Control Board and Display ............................................................................................ 37
Fan and Fan Housing...................................................................................................... 39
Dampers ........................................................................................................................... 40
Heater............................................................................................................................... 41
Thermistor........................................................................................................................ 41
Air Flow............................................................................................................................ 43

– 4 –
Table of Contents (cont.)
Compartment Lights ............................................................................................................. 44
FF/FZ Compartment Lights Diagnostic .......................................................................... 44
Door Switches ................................................................................................................. 45
Master Light Switch ........................................................................................................ 45
Temperature Overload Device (TOD)............................................................................. 45
Circuit Breakers............................................................................................................... 46
Transformers .................................................................................................................... 46
Light Bulb Replacement................................................................................................. 46
Schematics ............................................................................................................................ 49
Refrigeration System ............................................................................................................ 55
Inverter Compressor........................................................................................................ 55
Inverter............................................................................................................................. 57
Accumulator .................................................................................................................... 59
SystemPressure.............................................................................................................. 59
Refrigerant Charge ......................................................................................................... 59
Drier.................................................................................................................................. 60
Evaporator ....................................................................................................................... 60
Diagnostic Mode ................................................................................................................... 61
Compressor Not Running Flowchart .............................................................................. 62
Warranty ................................................................................................................................63

– 5 –
Technical Data
Important Safety Notice:
This information is intended for use by individuals
possessing adequate backgrounds of electrical,
electronic, and mechanical experience.Any
attempt to repair a major appliance may result in
personal injury and property damage. The
manufacturer or seller cannot be responsible for
the interpretation of this information, nor can it
assume any liability in connection with its use.
Compressor ...............................................833 Btu/hr
MinimumCompressorCapacity
Vacuum .......................................... 22 inches
MinimumEqualizedPressure
@ 70 °F...........................................65/65 PSIG
@ 90 °F...........................................79/80 PSIG
Refrigerant Charge (R134a) .............................12.50 oz
HMI Temperature Control..........................................**
OvertemperatureThermodiscLight..........WR50X10035
OvertemperatureThermodiscEvaporator ..WR50X10036
Defrost Heater ....................................... WR51X10065
Drain Trough ASM .................................. WR17X11194
Condenser Fan Motor ............................ WR60X10083
Condenser Fan Blade ............................ WR60X10049
Evaporator Fan Motor ............................ WR60X10043
Evaporator Fan Blade ............................ WR60X10050
Main Board ........................................... WR55X10400
Thermistors(2-FF, 1-FZ, 1-EV)...............WR55X10025
DamperAssembly Fresh Food ............... WR60X10085
Evaporator ............................................ WR84X10038
Compressor .......................................... WR87X10064
Condenser............................................. WR84X10037
Filter Drier ............................................. WR86X0096
Inverter ................................................ WR55X10155
Accumulator ......................................... WR02X11264
REPLACEMENT PARTS
TO CABINET
WIRING
COMMUNICATION
SIGNAL
COMPRESSOR
GROUND
GREEN/YELLOW
GROUND
RED
ORANGE
BLACK
BLACK GREEN/YELLOW
BLUE
BROWN
WHITE
INVERTER
* Models ZIS360 - 45.58 kWh/mo. ZIS 360D - 48.67 kWh/mo. ZIS 420 - 47.08
kWh/mo. ZIS 420D - 51.83 kWh/mo. ZIS 480 - 49.33 kWh/mo. ZIS 480D -
56.50kWh/mo.
** ModelsZIS360 -WR55X10166.ZIS 360D-WR55X10165. ZIS 420-
WR55X10164.ZIS 420D-WR55X10163. ZIS480- WR55X10162. ZIS480D -
WR55X10158.
WARNING: Disconnect power cord before
servicing.
Note: Reconnect all grounding devices.
All parts of this appliance capable of conducting
electrical current are grounded. If grounding
wires, screws, straps, clips, nuts, or washers
used to complete a path to ground are removed
for service, they must be returned to their
original positions and properly fastened.
Caution: To avoid personal injury when
servicing the condensing unit, stand on a ladder
which will give enough support to allow removal
of the top panel and safely allow access to
service the unit.
ELECTRICAL SPECIFICATIONS
NO LOAD PERFORMANCE
REFRIGERATION DIAGNOSIS
MaxDefrostControl
W/No Door Openings ............60 hrs @ 35 min
Evap.OvertemperatureThermodisc..............60 °F - 45
°F
Light Thermostat .....................................140 °F - 90 °F
Electrical Rating: 115 VAC 60 Hz.....................9.0 amp
Maximum Current Leakage............................ 0.75 mA
Maximum Ground Path Resistance ............ 0.14 ohms
Energy Consumption (HUMID) ................................. *
To access the low-pressure side of the system,
install a WR86X0097 valve only on the process
tube extending from the compressor case.
CONTROL POSITION 37-0 °F and
AMBIENT TEMPERATURE OF 70 °F 90 °F
Fresh Food, °F ....................... 35–39 .............. 37–48
Frozen Food, °F ..................... (-4)–4 .............. (-4)–4
Percent Running Time............. 60 .................... 80
CONDENSER
LOOP
PROCESS
TUBE
COMPRESSOR
*ACCUMULATOR
CONDENSER
HEAT EXCHANGE
EVAPORATOR
HIGH PRESSURE
(DO NOT USE)
*INVERTER
DRYER
CONDENSER FAN
(SEE NOTE)
Note: Fan blade mounted for maximum airflow with 1/2" of shaft exposed.
*Approximate location (Inverter and Accumulator).
REFRIGERATION SYSTEM

– 6 –
Model Nomenclature
Serial Number
The first two numbers of the serial number
identify the month and year of manufacture.
Example: AG123456S = January, 2004
A - JAN 2005 - H
D - FEB 2004 - G
F - MAR 2003 - F
G - APR 2002 - D
H - MAY 2001 - A
L - JUN 2000 - Z
M - JUL 1999 - V
R - AUG 1998 - T
S - SEP 1997 - S
T - OCT 1996 - R
V - NOV 1995 - M
Z - DEC 1994 - L
The letter designating
the year repeats every
12 years.
Example:
T - 1974
T - 1986
T - 1998
Rating Plate
The rating plate,
located behind the
grille panel at the top
of the refrigerator on
the right side of the
evaporatorbox,
contains the model
and serial numbers.
Additionally,the rating
plate specifies the
minimum installation
clearances, electrical
voltage,frequency,
maximum amperage
rating,refrigerant
charge, and type.
Mini-Manual
The mini-manual is located behind the grille
panel at the top of the refrigerator. When done,
return the mini-manual to its original location for
future use.
Brand/Product
Z-Monogram
Style
I-Built-In
Configuration
S - Side by Side
Color
S - Stainless B - Black W - White
Blank- Trim Model
Size
480 - 48 Inches Wide
Engineering
A-Initial Design
B - 1st Revision
C-2ndRevision
D-3rdRevision
Etc.
Door Type
F - Flat
R - Right
L-Left Door Swing
Icemaker/Exterior
N-Nondispenser
D-Dispenser
Model Year
R-2004
ZISS480 NRA LH
Mini-Manual and
Rating Plate

– 7 –
Component Locator Views
Figure1-Machine Compartment
Figure2 - Evaporator (Top of Freezer)
Inverter Compressor
Master Light Switch
Evaporator
Evaporator
Thermistor
Evaporator
Overtemperature
Thermodisc(TOD)
Defrost Heater
Accumulator

– 8 –
Figure 3 - Water Valve
(CenterofMachineCompartment) Figure 4 - Evaporator Fan
Figure5-LightCircuitTransformers
Water Valve
Evaporator Fan Motor
Evaporator Fan
Connector
Circuit Breakers
HousingUnder
Center of Unit
Transformers

– 9 –
Climate Control
Drawer Fan
Figure6- Freezer Compartment Figure 7 - Fresh Food Compartment
Freezer
Door Switch
Auger Drive
Airflow Grille
Icemaker
Cube Solenoid
Temperature
Overload Device
(TOD)
Freezer
Thermistor
Fresh Food
Door Switch
Temperature Touch Pad
Damper
Water Filter
Fresh Food
Thermistors
Climate Control
Drawer Dampers
Temperature
Overload Device
(TOD)
Lower
Fresh Food
Lights

– 10 –
Cabinet
The Master Light Switch is located behind the
grille panel.
Machine Compartment
2 Screws
The outer case is made of pre-painted galvanized
steel. The fresh food and freezer liners are
painted metal with a smooth finish. The liners are
not removable or replaceable.
Machine Compartment
The machine compartment is located on the top of
the unit and has a movable chassis that can be
extended from the front of the unit to provide
access to the refrigeration system components.
Caution: Avoidkinking therefrigeration lines when
sliding the chassis out and back in.
To extend the chassis:
1. Remove the grille panel by removing 2 screws
from each side (see photo).
2. Remove the wire guard and rocker switch
panel.
3. Remove the condenser baffle.
4. Loosen the front 7/16-in. track bolts (1 on each
side of the compressor) from the front of the
chassis track.
5. Remove the rear 7/16-in. track bolts (1 on
each side of the compressor) and the spacers
under the rear of the chassis track.
6. Pull the chassis forward until it reaches the
stops in the tracks, working the refrigeration
tubing as you pull the chassis out.
Note.
• When sliding the chassis back into position, be
certain the lines and wiring have not fallen
behind the chassis.
•Use the grille screws for adjustment when
realigningthe grille.
Inverter
Chassis
Track Bolts

– 11 –
Doors and Hinges
The doors are of one-piece construction with foam
insulation.
The inner door panel and outer door panel cannot
be separated and must be replaced as an
assembly.
DoorAdjustment
Be sure the top hinge does not hit the cabinet trim.
Adjust the door up or down by turning the threaded
hinge pin on the bottom hinge of the fresh food
door.
The upper hinge on the freezer door is slotted to
allow the freezer door to be adjusted left or right.
Door Removal
WARNING: Use the appropriate safety equipment
and lifting techniques. Two persons may be
required for door removal.
Caution: Use wood or a heavy plastic sheet to
protect the floor where the door will be placed.
1. Remove all food and bins from the inner door
liner and tape door to cabinet.
2. Disconnect the spring from the pin and the
actuator arm.
3. Remove theAllen head bolt, bushing, and
spacer from the door and actuator arm.
4. If removing the freezer door, shut off the water
supply, and disconnect the water line and
electrical connector.
5. Remove the upper hinge.
6. Lift door up and out to remove.
Door Closure Mechanism
The door closure mechanism uses a spring to
provide positive door closure from approximately
60 degrees. The door closure mechanism
actuator arm has a spring attached to the rear and
is supported by guide rollers on either side of the
base channel. The roller circumferences and the
actuator arm detents are matched for smooth
operation. The arm is attached to the door with an
Allenhead shoulder bolt.
The closure mechanism allows easy opening to
approximately 90 degrees, where the arm has a
detent to permit the door to remain open at 90
degrees with minimal tension. Once the door is
opened beyond 90 degrees, the closure
mechanism pulls the door open until the closure
arm engages the door stop at approximately 130
degrees (factory setting, the door stop can be field
set to 90 degrees). The reverse action occurs
when the door is closed.
Note: The actuator arm is spring loaded with
moderate spring tension.
1. Disconnect the spring from the pin and the
actuator arm.
2. Remove the 3/16-in.Allen head bolt, bushing,
and spacer from the door and actuator arm.
3. Remove 2 screws and the roller assembly
from the rail. Replace roller if excessively
worn.
GEA01267
Door
Hinge
Spring
Pin
3/16"
Allen
Head
Bolt
5/16"
Bolt
Actuator
Arm
Roller
Assembly

– 12 –
Hex Nut
Wheel
Leveling Leg
Stripe
(Handle Side
ofDoor)
Lower Door Hinge
Note: If replacing lower door hinge, note the
placement of the door stop (pin).
1. Remove the door.
Note: Note the placement of spacers and washers for
reassembly.
2. Remove 3/8-in. hex screws (4) and hinge from the
underside of the cabinet.
3. Remove T-27 Torx screws (4) and hinge from the
bottom of the door.
Rollers and Leveling
This model has 4-point leveling provided by adjustable
rollers on the rear and leveling legs on the front. It also
has 2 nonadjustable front rollers that are used only for
unitpositioning.
To level the unit:
1. Turn the 7/16-in. hex nut, located above the front
rollers, to adjust the roller on the rear of the unit.
Turn clockwise to raise, counterclockwise to lower.
2. Turn the front legs with a 1-1/4 in. open end
wrench to adjust the front of the unit. Turn
clockwise to raise, counterclockwise to lower.
Door Gaskets
The fresh food and freezer doors have magnetic
gaskets that create a positive seal to the front of the
steel cabinet. The center mullion also has magnets to
assist in door sealing. Improper installation of the door
gasket will cause same-poled magnets to oppose one
another, preventing the door from closing tightly.
The magnetic door gaskets are secured to the doors
by a barbed edge that locks into a retainer channel.
The side of the gasket that is nearest the handle of the
door has a stripe on the inside of the barb (see photo).
Replacement
1. Starting at any corner, pull the old gasket out of the
retainingchannel.
2. Soak the new gasket in warm water to make it
pliable.
3. Push the barbed edge of the gasket into the
retainerchannel.
GEA01268
Hinge
Door Stop
5/16"
Bolt
Hinge
Bushing
Base Channel Spacer

– 13 –
Ice and Water Dispenser
Screw
4 Screws
Duct Door
Solenoid
Light Socket Water Switch
The icemaker is mounted to the upper left wall of
the freezer cabinet. Under normal operating
conditions, temperatures, door openings, and food
load, the icemaker is capable of producing
approximately 100 to 130 cubes in a 24-hour
period.
To service the icemaker, refer to GE Publication
31-9063.
Controls
The electronic controls on the dispenser are
interactive. The control panel is equipped with a
proximity sensor that causes the panel to light up
as you approach the dispenser (approx. 2 inches).
Removal
1. Remove the bezel from the outside of the
freezer door.
Note: On stainless steel models, the front panel
must be removed. Remove screws from top,
bottom, and hinge side. Pull out on hinge side.
2. Remove the screw from the bottom of the
control panel. Lift up and pull the bottom of the
panel out. Disconnect the connectors, and
remove the control panel.
3. Remove 4 screws and the backing panel.
4. From the back side of the panel, remove the
water switch and the light socket.
5. Remove 3 screws and the duct door solenoid.
Icemaker
Feeler Arm
Power Switch
Green
Power Light
I = On
0 = Off

– 14 –
To Replace the Water Valve
Note: Some water may leak from the water supply
line and valve when they are disconnected.
1. Shut off the water supply to the unit.
2. Open the grille panel.
3. Remove 1 Phillips screw attaching the water
valve to the filter bracket.
4. Disconnect the wiring harness connector and
3 water lines from the water valve and remove.
To Replace the Chilled Water Tank
Note: Some water may leak from the water supply
line and valve when they are disconnected.
1. Shut off the water supply to the unit.
2. Remove 2 screws and the chilled water tank
cover inside the fresh food compartment.
3. Remove 2 screws from the chilled water tank.
4. Cut the water lines leaving enough line to
reconnect. Use union WR02X10471
(5/16 x 5/16).
Screw
Screw
Chilled Water Tank
Water Tank Cover
Screws
Water Valve and Water Tank
The water valve is mounted in the left side of the
machine compartment.
A plastic water line is routed from under the unit,
up the back of the cabinet, into the machine
compartment, and to the water filter. A line then
goes from the water filter to the water valve.
Two low-pressure plastic water lines supply water
to the icemaker and door dispenser from the water
valve. Aplastic water line is routed from the water
valve, out the back of the machine compartment,
down the back of the cabinet through the bottom of
the unit, and into the fresh food compartment
where it is attached to the cold water tank. A line is
routed from the cold water tank through the bottom
of the unit into the freezer door to supply the water
dispenser. The icemaker water line is routed from
the water valve through the machine compartment
to the icemaker. The icemaker fill tube is also
plastic.
Note: No water filter should be installed if home
has in-home water filtration system (reverse
osmosis filter system, etc.) Replace filter with by-
pass plug.
Water Valve

– 15 –
Airflow
2. Remove 4 Phillips screws and the light
assembly.
Damper
Damper
The fresh food compartment receives chilled air
via an electronic damper that is positioned at the
top rear of the fresh food compartment. The
damper is controlled by the main control board and
when open, allows the evaporator fan to push
chilled air from the evaporator into the fresh food
compartment.
To Remove the Damper
1. Remove the light cover. 3. Remove the Styrofoam section covering the
damper.
4. Disconnect the damper wiring connector.
5. Carefully pull the damper out of the mullion and
remove.
Top
BottomFreezer Side Fresh Food Side
Return
Evaporator
Front FrontBack Back
Dampe
r
Air
Tower
Evap.
Fan
Foam
Duct
Exit
Duct
Entrance

– 16 –
The evaporator fan is the same fan used on previous models; however a significant difference is that the
main control board does not require, nor receive, input from the fan feedback/rpm (blue) wire. The fan
utilizes a permanent magnet, 4-pole, DC motor that operates at three different speeds: high, medium,
and low. The speed of the fan is controlled by the voltage output from the main control board. Voltage
output from the control board to the fan is 13.2 VDC; however to regulate the speed of the fan, the main
control board uses pulse width modulation (PWM). When operating, voltage is sent in pulses (much like
a duty cycle) as opposed to an uninterrupted flow. This pulsing of 13.2 VDC produces effective voltage
being received at the motor, which is the equivalent to a reduction in voltage. Fan speed will be selected
and maintained by the main control board regulating the length and frequency of the 13.2 VDC pulse.
One complete revolution of the motor is comprised of all 4 poles. To determine the rpm of the fan, do
the following: Measure the frequency being applied to the motor. Multiply this number by 15 (60 seconds
divided by 4 poles). For example, a frequency measurement of 200 Hz multiplied by 15 would show a
fan speed of 3000 rpm (15 x 200 = 3000). Temperature may cause some fan speed variation. Fan
speed may vary +/- 5%, depending on the temperature, with higher temperatures causing slightly higher
speeds.
Fans
Evaporator Fan
The position of the fan blade in relation to the shroud is important. Refer to illustration for specifications.
High Speed (12 VDC measured)
Medium Speed (9.2 VDC measured)
Low Speed (8 VDC measured)
EVAPORATOR FAN SPEEDS
12 VDC
9.2 VDC
8 VDC
12 VDC
0 VDC
0 VDC
0 VDC
12 VDC
12 VDC
5/16 +/- .03
Airflow

– 17 –
Evaporator and Condenser Fan Resistors
Evaporator FanAdjustment
If the fan shorts, it may damage the main control
board. If the resistor on the main control board is
burnt, you must replace the fan and the board (see
photo).
Evaporator Fan Resistor
Condenser Fan Resistor
J4 or J16 J3 or J10 J1 or J14
J2 OR J13
Some of the low voltage DC
connector labeling on this model
may differ from other models. The
function and diagnostics for these
connectors are identical for all
models.
5/16 +/- .03
Airflow
1
5 1
10
1
9
J1 or J14
J5
6
J3 or J10
J2 or J13
1
DEFROST
K4
21
J6
K5
CUSTOM COOL
K7
PAN
HEATER
CRUSHER
K2
WATER
K3
J4 or J16
1
8
J7
AUGER
K1
1
J2
EARTH
EARTH
J1
J18
J12
J15
1
J19
J11
J9
Comm. 2-Way Digital
Comm. +12V
Comm. Common
Damper - Blue
Damper - White
Damper - Red
Damper - Yellow
FF1 Thermistor
FF2 Thermistor
FZ Thermistor
Evaporator Thermistor
+5V
Custom Cool Damper1 +
Custom Cool Damper1 -
+5V
Custom Cool Thermistor
Evaporator Fan Tach.
Fan Common
Evaporator Fan
Condenser Fan
Custom Cool Fan
Fan +12V
Inverter Common
Inverter Output
Drain Pan Heater
Not Used
Defrost Heater
Line (L1)
Neutral
FZ Door Switch
FF Door Switch
Custom Cool Heater
Auger Motor Interlock
Water Valve
Crusher Solenoid
Auger Motor
J8
Not Used

– 18 –
White Wire (DC Common)
The white wire is the DC common wire used for
testing. During repairs, DC polarity must be
observed. Reversing the DC polarity will cause a
shorted motor and/or board.
Red Wire (Supply)
Each motor uses an internal electronic controller
to operate the motor. Supply voltage from the
main control board remains at a constant
12 VDC.
Blue Wire (Feedback/RPM)
The blue wire feeds rpm (speed) information to
the main control board, allowing the board to
maintain consistent fan speeds. Loss of feedback
from the blue wire will result in the fan accelerating
to maximum speed. Measure the fan rpm using
the frequency between the blue and white wires.
High speed - 205 to 215 Hz (3140 RPM)
Medium speed - 155 to 165 Hz (2415 RPM)
Low speed - 140 to 150 Hz (2160 RPM)
Yellow Wire (Signal)
The yellow wire is the input wire from the main
control board. The main control board provides
8 VDC effective voltage for low speed, 9.2 VDC
effective voltage for medium speed, and 12VDC
for high speed. The fan will operate in low speed
only when the fresh food thermistor is satisfied.
Note: When testing these motors:
• You cannot test with an ohmmeter.
• DC common is not AC common.
• Verify 2 voltage potentials:
a. Red to white - power for internal controller.
b. Yellow to white - power for fan.
• Observe circuit polarity.
• Motors can be run for short periods using a
9-volt battery. Connect the white wire to the
negative (-) battery terminal only. Connect the
red and yellow wires to the positive (+) battery
terminal.
J4 or J16 J3 or J10 J1 or J14
J2 OR J13
Some of the low voltage DC
connector labeling on this model
may differ from other models. The
function and diagnostics for these
connectors are identical for all
models.
1
5 1
10
1
9
J1 or J14
J5
6
J3 or J10
J2 or J13
1
DEFROST
K4
21
J6
K5
CUSTOM COOL
K7
PAN
HEATER
CRUSHER
K2
WATER
K3
J4 or J16
1
8
J7
AUGER
K1
1
J2
EARTH
EARTH
J1
J18
J12
J15
1
J19
J11
J9
Comm. 2-Way Digital
Comm. +12V
Comm. Common
Damper - Blue
Damper - White
Damper - Red
Damper - Yellow
FF1 Thermistor
FF2 Thermistor
FZ Thermistor
Evaporator Thermistor
+5V
Custom Cool Damper1 +
Custom Cool Damper1 -
+5V
Custom Cool Thermistor
Evaporator Fan Tach.
Fan Common
Evaporator Fan
Condenser Fan
Custom Cool Fan
Fan +12V
Inverter Common
Inverter Output
Drain Pan Heater
Not Used
Defrost Heater
Line (L1)
Neutral
FZ Door Switch
FF Door Switch
Custom Cool Heater
Auger Motor Interlock
Water Valve
Crusher Solenoid
Auger Motor
J8
Not Used

– 19 –
Screws
Icemaker Drive
MotorAssembly
Screws
Screws
Wiring
Cover
Screws
Evaporator Fan Cover
To Remove the Evaporator Fan
1. Remove the ice bucket.
2. Disconnect the icemaker connector. Loosen 2
screws and remove icemaker.
3. Remove 4 screws and slide the icemaker drive
motor assembly forward. Disconnect the wiring
connector and remove the assembly.
5. Remove 2 screws and wiring cover.
6. Remove 6 screws and evaporator fan cover.

– 20 –
Condenser Fan Motor
Screws
Fan Bracket
Fan Bracket
Screws
Wire Connector
Evaporator Fan
Condenser Fan
The condenser fan is a permanent-magnet, 4-
pole, DC motor that will operate at 3 speeds. Fan
speed (low, medium, high) corresponds with
compressor speed to minimize pressure
variations in the sealed system. The speed of the
fan is controlled by the voltage output from the
main control board. Voltage output from the
control board to the fan is 13.2 VDC; however to
regulate the speed of the fan, the main control
board uses pulse width modulation (PWM). When
operating, voltage is sent in pulses (much like a
duty cycle) as opposed to an uninterrupted flow.
This pulsing of 13.2 VDC produces effective
voltage being received at the motor, which is the
equivalent to a reduction in voltage. Fan speed will
be selected and maintained by the main control
board regulating the length and frequency of the
13.2 VDC pulse. .
To Remove the Fan
1. Extend the chassis (see Machine
Compartment in the Cabinet chapter).
2. Pull the blade off the motor shaft.
3. Cut the wire tie securing the fan wiring to the
fan bracket.
Caution: Fan connector can be separated into 3
segments (center, left side, and right side).
Disconnect the fan connector at the center only.
4. Disconnect the fan connector.
5. Feed wiring through the hole in the fan shroud.
6. Remove 2 screws, top section of fan bracket,
and motor.
7. Disconnect the evaporator fan wiring
connector.
8. Remove 2 screws from the fan mounting
bracket and remove the fan.