GE ZIB240P How to use

MODEL SERIES:
ZIB240P
TECHNICAL SERVICE GUIDE
Bar Refrigerator
with Icemaker
GE Consumer & Industrial
PUB # 31-9124 11/04

– 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.
RECONNECT ALL GROUNDING DEVICES
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
in any form without written permission from the General Electric Company.

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Table of Contents
Child Control Lockout.......................................................................................................7
Cleaning the Outside .......................................................................................................7
Components.....................................................................................................................8
Component Locator Views...............................................................................................20
Compressor .....................................................................................................................19
Condenser Fan ...............................................................................................................18
Control Panel ...................................................................................................................9
Control Features ..............................................................................................................7
Damper Assembly............................................................................................................15
Defrost Heater and Fill Tube Heater ................................................................................17
Diagnostics and Service Information ...............................................................................21
Evaporator Compartment.................................................................................................16
Evaporator Cover ............................................................................................................13
Evaporator Fan ................................................................................................................13
Freezer Compartment......................................................................................................12
Full Extension Drawer......................................................................................................8
Icemaker .........................................................................................................................8
Interior Lights ...................................................................................................................8
Introduction ......................................................................................................................4
Logic Board......................................................................................................................9
Nomenclature...................................................................................................................5
Power Supply Board ........................................................................................................9
Refrigerator ON/OFF .......................................................................................................7
Schematic ........................................................................................................................24
Technical Data .................................................................................................................6
Temperature Control ........................................................................................................7
Thermistors ......................................................................................................................11
Warranty...........................................................................................................................25
Water Valve......................................................................................................................19

– 4 –
Introduction
This manual covers service information for the Bar Refrigerator with Icemaker.
The temperature setting for the refrigerator is factory set at 38°F. The ambient temperature range is
from 70°F to 90°F.
The leveling legs are factory installed. The evaporator is located behind the evaporator cover of the
freezer compartment, and is not serviceable. The wooden front on the full extension drawer can be
stained to match the surrounding cabinets. Please read the Installation Instructions manual for all
pertinent installation information.
The refrigerator can be installed as a built-in or free-standing unit. It can be closed in on the top and
three sides, as long as the front is unobstructed for air circulation and there is proper access to the
door. The door features a cam riser on the door hinge for self-closing. The refrigerator comes with an
optional stainless-steel toe kick taped to the rear of the unit.
Shown with Stainless Steel Door

– 5 –
The letter designating
the year repeats every
12 years.
Example:
T - 1974
T - 1986
T - 1998
Z D B I 2 4 0 P A S S
Monogram
Product
Installation
D = Built-In or Freestanding
I = Built-In
Exterior Color
BS = Black Case/
Stainless Door
SS = Stainless Steel
II = Custom Panel
Model Year Designator
Model Number
The nomenclature tag is located on
the center of the floor in the refrigerator
compartment. The mini-manual is
taped to the right front corner of the
unit behind the toe kick.
Serial Number
The first two characters 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
Nomenclature
Width
24 Inches
Mini-Manual
Nomenclature
Configuration
BI = Bar Refrigerator w/Icemaker
DI = Refrigerator Double-Drawer, Custom Panel
DS = Refrigerator Double-Drawer, SS
FI = Fresh-Food Refrigerator, Custom Panel
FS = Fresh-Food Refrigerator, SS
OD = Outdoor/Indoor Refrigerator
WR = Wine Reserve
BR = Beverage Center

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Technical Data
Capillary
Dryer
Compressor
Process Tube
Condenser
Evaporator
ELECTRICAL SPECIFICATIONS
Temperature Control.......................................39°F
Electrical Rating: 120V AC 60Hz..............2.0 Amp
Maximum Current Leakage......................0.50 mA
Maximum Ground Path Resistance.............0.14 Ω
REFRIGERATION SYSTEM
Refrigerant Charge (R134a).................3.2 ounces
Compressor.........................................590 BTU/hr
Minimum Compressor Capacity
Vacuum...................................................21 inches
Minimum Equalized Pressure
@70°F.......................................................37 PSIG
@90°F.......................................................40 PSIG
NO LOAD PERFORMANCE
Control Position and
Ambient Temperature of: 70°F 90°F
Fresh Food °F 33-45 33-45
Ice Compartment °F (-5) -6 (-5) -6
Percent Running Time, %..........34-45 50-65
INSTALLATION
Clearance must be provided for air circulation:
AT TOP.................................................................0
AT SIDES.............................................................0
AT REAR.................................................1.0 INCH
DOOR FRONT TO PROTRUDE FROM
CABINETS ...................................MIN. 13/4INCH
DISCONNECT POWER CORD BEFORE SERVICING
IMPORTANT - 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 position and properly fastened.
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.

– 7 –
Throughout this manual, features and appearance may vary from your model.
Control Features
Temperature Control
Factory Settings Control Range
38°F 34°F - 45°F
The temperature display shows the actual
temperature of the refrigerator. The actual
temperature may vary slightly from the set
temperature based on factors such as door
opening, amount of food, and room temperature.
To change the temperature setting, press the
WARMER or COLDER pads until you reach the desired
set temperature. After 5 seconds, the display will
return to the actual temperature. Allow 12 to 24
hours for the refrigerator to reach the temperature
you have set.
Child Control Lockout
The child control lockout feature prevents
unwanted changes to the temperature settings.
After the desired temperature is set, the
temperature can be locked. To lock, press the
+and -pads simultaneously for 5 seconds. To
unlock, press both pads simultaneously again for
5 seconds.
Refrigerator ON/OFF
This pad stops cooling in the refrigerator, turns off
the temperature controls, and removes power to
the light circuit.
Press this pad for a minimum of 3 seconds to
turn the refrigerator OFF for long
vacations or absences, or when
cleaning the unit or changing the
light bulb. Press the pad again to
turn the refrigerator ON.
Cleaning the Outside
Door Handles and Trim
Clean with a cloth dampened with soapy water.
Dry with a soft cloth. Keep the outside clean.
Wipe with a clean cloth lightly dampened with
mild liquid dish detergent. Dry with a clean, soft
cloth. Do not wipe the refrigerator with a soiled
dish cloth or wet towel. These may leave a
residue that can damage the finish. Do not use
scouring pads, powdered cleaners, bleach or
cleaners containing bleach, these products can
scratch and damage the finish.
Stainless Steel
To preserve and protect the fine finish, regularly
clean and polish the stainless steel exterior and
handle with a commercially available stainless
steel cleaner, such as Stainless Steel Magic™.
Stainless Steel Magic™ is available through GE
Parts and Accessories, 800.626.2002 or GE
Appliances.com. Order part number WX10X15.
To avoid damaging the stainless steel, wipe in
the same direction as the grain when polishing or
cleaning any stainless steel surface. Do not use
appliance wax or polish on the stainless steel.
Warranty does not cover damage due to improper
cleaning methods.

– 8 –
Components
Troubleshooting
If ice cubes get stuck in the icemaker, the green
power light will blink. To correct this, set the
icemaker power switch to O(off) and remove the
cubes. Set the icemaker power switch to I (on) to
restart the icemaker. After the icemaker has been
turned on again, there will be a delay of about 45
minutes before the icemaker resumes operations.
Note: In homes with lower-than-average water
pressure, the icemaker may cycle multiple times
when making one batch of ice.
Icemaker
Feeler Arm
Power Switch
Green
Power Light
Icemaker
The icemaker will produce seven cubes per
cycle - approximately 100 to 130 cubes per day
(approximately 4.8 lbs). Ice rate is dependant
on freezer compartment temperature, room
temperature, number of door openings, and other
use conditions.
The icemaker will fill with water when it cools to
15°F (-10°C). A newly installed refrigerator
may take 12 to 24 hours to begin making ice
cubes.
The icemaker will make a buzzing sound each
time it fills with water. Be sure nothing interferes
with the sweep of the feeler arm.
Tab (push tab down on
right drawer guide, pull
tab up on left drawer
guide)
Full Extension Drawer
To remove the full extension drawer, pull the
drawer out to the STOP position. Push the tab on
the right rack guide down while pulling the tab on
the left rack guide up, and pull the drawer out.
To replace the full extension drawer, insert the
sides of the drawer back into the guides and
push until the tabs snap into place. Make certain
the tabs on the drawer are fully engaged before
loading. Pull the drawer out all the way to the
STOP position and push back in several times to
make sure locking tabs are properly engaged.
Interior Lights
Run diagnostic mode 22 and 21 to test the light
circuit and reed switches. (See Diagnostics and
Service Information.)
A single 15-watt lamp recessed in the back wall of
the fresh food compartment provides light to the
interior. The light is activated by 1 magnetically
operated reed switch located on the logic board.
The reed switch is not serviceable.
Note: The door reed switch magnet is part of the
door and is not serviceable.

– 9 –
Control Panel
The control panel is held in place by 2 Phillips-
head screws.
Caution: When reinstalling the control panel,
make sure control panel wires are routed properly
to avoid pinching.
Logic Board
The logic board is located behind the control
panel.
Run diagnostic mode 02 to test the link between
the logic board and power supply board. (See
Diagnostics and Service Information.)
Troubleshooting the Logic Board
If the compressor is not operating and the display
is not illuminated:
Check for 5 VDC between pin #1 and pin #4
on the logic board while it is connected.
If it is less than 5 VDC, disconnect the
connector from the logic board. Measure
the voltage between pin #1 and #4 of the
connector. If this voltage is less than 5 VDC,
there may be a problem with the wiring or
power supply board.
Check the voltage between pin #1 and pin #4
at K11 on the power supply board to continue
troubleshooting.
1.
2.
3.
Caution: The lock tabs on all low-voltage wire
connectors on the power supply board and
logic board are fragile. The tabs can break if
excessive pressure is applied when unplugging
the connector.
Power Supply Board
The power supply board is housed in a sliding
tray above the machine compartment. The tray is
held in place by 2 Phillips-head screws.
Power Supply Board
K1
K2
K3
K4
K6
K11 K13
K9 K5
DAMPER
LOGIC BD.
EVAP.
FAN
DMPR.
HEATER
FF + EVAP NTCFZ NTC
J2J3
POWER
ICE MAKER
LIGHT
FILL TB + DEF
HEATERS
AC SIDEDC SIDE
K14
(Continued next page)
K11
1
2
3
4
BROWN
BLUE
LOGIC
BOARD WHITE
BLACK
+5V
CLK
DATA
COM
Power Supply Board
REED DOOR SW
.

– 10 –
Power Supply Board Replacement
The replacement power supply board comes
with 4 jumpers. The jumpers must be moved to
the correct configuration for the refrigerator to
function properly. All boards come with a jumper
in the J4 location.
WARNING: Jumper positions should be changed
with the power off.
1. Remove the jumper from J4. If the jumper is
not removed from the J4 position, the control
will display JPS when the power is reapplied.
2. Set jumpers to the configuration shown below.
Jumper Pin Configuration for Bar Refrigerator
Arrows Mark Jumper Pin Locations
=
In =
Out
K13
K5
EVAP
. FAN
FF + EV
AP NTC
J2
J4
J3 J1
6. Verify that the replacement board has been
jumpered correctly by comparing the model
number displayed on the control panel with
the table of model numbers below.
Model
No. (m)
Model
Select
1Wine
Reserve
2Beverage
Center
3Double-
Drawer
4 Bar Unit
5Fresh-
Food
6Outdoor/
Indoor
7. If the model number displayed does not
match your model, change the jumpers to
correspond with the correct model.
Note: Anytime the jumpers are changed on
the power supply board, in order for the unit to
function properly, you must run diagnostic mode
15 to reset the board.
Note: If JPS is displayed after the refrigerator
is powered up, disconnect power, remove J4
jumper, and reapply power.
3. Power up the refrigerator.
4. Enter into service mode (see Diagnostics and
Service Information).
5. Run diagnostic mode 15.

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Thermistors
Run diagnostic mode 07 to test the circuit
between the power supply board and thermistors.
(See Diagnostics and Service Information.)
The refrigerator has 3 serviceable thermistors:
• In the freezer compartment, on the right wall,
near the top (Fig. 1).
• In the fresh food compartment, on the right
wall, above the top shelf (Fig. 2).
• On the upper-right corner of the evaporator
(see Evaporator Compartment for location). Thermistor Resistance Chart
Temperature °F Resistance (kΩ)
042.60
20 23.00
32 16.33
40 13.05
50 9.95
65 6.55
75 5.25
Resistance Checks
See Thermistor Resistance Chart for appropriate
resistance values.
Freezer Compartment Thermistor - K9 on the
power supply board (pin 1 and pin 2).
Fresh Food Thermistor - K5 on the power supply
board (pin 1 and pin 2).
Evaporator Thermistor - K5 on the power supply
board (pin 3 and pin 4).
Fig. 1 Fig. 2
To remove the fresh food thermistor access cover,
insert a flat-blade screwdriver under the front of
the cover and gently lift the cover.
To remove the freezer thermistor access cover, lift
the cover from the back and gently pull forward.
Note: When replacing thermistor(s), cut the
thermistor wires and splice the new thermistor
using supplied connectors and heat shrink tubing.

– 12 –
Freezer Compartment
To remove the freezer compartment:
1. Remove ice storage bin, drawer, and shelves.
2. Remove the freezer thermistor cover. Unclip
the freezer thermistor from the holding
bracket.
3. Remove the control panel.
4. Remove the 3 Phillips-head screws from the
top-front of the freezer compartment.
5. Remove the 4 Phillips-head screws from the
rear of the freezer compartment.
8. Pull the freezer compartment forward as
shown until clear.
6. Pull the freezer compartment forward
approximately 2 to 3 inches inches to access
the icemaker plug and groundwire.
7. Disconnect the icemaker plug. Disconnect the
ground wire at the fill tube heater.
Thermistor
6-Pin Connector
9. Reverse the procedure to install.
Caution:
Make sure the 6-pin connector is pushed
down and out of the way when sliding
the freezer compartment back into place.
Damage to the 6-pin connector can result.
Make sure the freezer thermistor does not get
pinched when sliding the freezer compartment
back into place.
•
•

– 13 –
4. Carefully pull the evaporator cover out from
the refrigerator compartment as shown below.
Caution: When removing the evaporator cover,
DO NOT bend it from side to side, the foam air
channel on the right side of the fan housing could
break.
Fill Tube Heater
Evaporator Cover
Evaporator Cover
The evaporator cover must be removed to access
the evaporator fan, damper assembly, evaporator
components, and fill tube heater.
To remove the Evaporator Cover:
1. Remove the freezer compartment. (See
Freezer Compartment).
2. Remove the 4 Phillips-head screws that hold
the evaporator cover in place.
Fan Housing
Foam Air Channel
5. Remove the foam air channel from the side of
the fan housing as shown.
Evaporator Fan
Run diagnostic mode 12 to test the circuit
between the power supply board and the
evaporator fan. (See Diagnostics and Service
Information).
The evaporator fan is mounted in the evaporator
cover behind the fan housing of the freezer
compartment.
The evaporator fan is a variable speed 12-VDC
fan. As cooling demand increases, voltage and
fan speed increase. The fan shuts off when the
door is opened and resumes when the door is
closed.
Evaporator fan voltage should be approximately
5 to 12 VDC at K13 on the power supply board.
(Continued next page)
3. Disconnect the 6-pin and 2-pin connectors in
the upper right corner.
6-Pin Connector
2-Pin Connector

– 14 –
Channel Guides
Locking Tab
Channel Guides
Fan Housing Bottom View
Fan Housing Top View
To remove the evaporator fan:
1. Remove the evaporator cover. (See
Evaporator Cover.)
2. The fan housing is secured to the evaporator
cover by 1 locking tab and 4 corner channel
guides (Fig.1 and Fig. 2). Press the locking
tab inward (Fig. 2) and slide the fan housing
to the left.
Evaporator Fan Rear View
Evaporator Fan
Evaporator Fan Front View
3. The evaporator fan is held in place by 4
flexible corner supports. The evaporator fan
and corner supports can be removed from the
evaporator cover as one unit.
Fig. 1
Fig. 2
Important Note: When replacing the evaporator
fan, ensure that it is facing in the proper direction.
Evaporator Cover

– 15 –
Inside View
Damper Assembly
Damper Assembly
Run diagnostic mode 10 to test the damper. (See
Diagnostics and Service Information.)
The damper assembly regulates the cool air
supplied to the fresh food section. It is located
inside the fan housing.
The damper is cycled based on inputs from
the fresh food and freezer thermistors.
The damper opens when the fresh food
thermistor temperature is 1.5 degrees above
the logic board set point, and closes when it is
within that range.
The damper opens anytime the refrigerator
door is open except during defrost.
The damper cycles 24 times (cycles open and
closed every 10 seconds for 4 minutes) after
defrost when the compressor first comes on.
Check for approximately 18 VDC at K6 on the
power supply board between pin #1 and pin #2
(damper in the closed position), and pin #2 and
pin #3 (damper in the open position). Check for
resistance of approximately 10 Ωat K6 on the
power supply board between pin #1 and pin #2
and pin #2 and pin #3.
Damper Capacitors
The damper capacitors help to quite the damper
door when it is opening and closing. The damper
capacitors are connected to the power supply
board located in the sliding tray above the
machine compartment (see Power Supply Board
for access).
•
•
•
•
Fan Housing
If the damper door is chattering or knocking when
it is opening and closing, replace the capacitors.
Run diagnostic mode 10 to test the damper. If the
problem persists, replace the damper assembly.
Damper Capacitors
To remove the damper assembly:
1. Remove the evaporator cover. (See
Evaporator Cover.)
2. Remove the fan housing. (See Evaporator
Fan.)
3. The damper assembly is held in place by
1 front tab and 3 channel guides. Pull the
damper assembly forward past the front tab
until it stops.
Damper Door
Front Tab
Channel Guides
Channel Guide
(Continued next page)

– 16 –
Evaporator Compartment
The evaporator compartment has 4 serviceable
components:
Fill Tube Heater
Defrost Heater
Fuse Link
Evaporator Thermistor
The evaporator is not serviceable.
Note: The fuse link opens at 183°F and cannot
be reset.
The drain hole is directly below the evaporator.
Check the drain hole and channel for any debris.
If the drain is blocked, condensation will not drain
properly. The evaporator drain hole is molded into
the cabinet interior and is not replaceable.
To access the components, remove the
evaporator cover (see Evaporator Cover).
•
•
•
•
Drain Hole
Defrost Heater
Fuse Link
Thermistor
Fill Tube Heater
Damper Heater
Damper Heater
• The damper heater is a 2-watt, 12-VDC
heater that protects the damper from frost or
ice buildup.
• The damper heater is located on the back of
the damper assembly.
• Check for a resistance of approximately
68.4 Ω at K14 on the power supply board.
4. Tilt the damper assembly as shown, then
remove it from the fan housing.
Note: When placing the damper assembly back
into the fan housing, ensure the assembly is
engaged in all 3 channel guides and fully seated
behind the front tab. Run diagnostic mode 10 to
ensure the damper is operating correctly. (See
Diagnostics and Service Information.)

– 17 –
Defrost Heater and Fill Tube Heater
Run diagnostic mode 14 to test the defrost cycle.
(See Diagnostics and Service Information.)
The termination temperature for the defrost cycle
is 45°F at the evaporator thermistor.
The defrost heater and fill tube heater are
supplied with 120 VAC only during the defrost
cycle. The fill tube heater is in parallel with the
defrost heater, and both are in series with the
fuse link. Check for 120 VAC at K4 on the power
supply board while the unit is in test mode 14.
To access the defrost heater and/or fill tube
heater, remove the evaporator cover (see
Evaporator Cover).
The defrost heater is rated at 100 watts and has a
resistance value of 121 Ω.
This fill tube heater is rated at 3.5 watts and has a
resistance value of 3.8K Ω.
To remove and replace the fill tube heater:
1. Disconnect the fill tube heater at the plug-in
connector (see photo).
2. Cut the heat-shrink tubing from the fill tube
heater.
3. Slide the fill tube heater from the fill tube as
shown.
To remove the defrost heater:
1. Disconnect the defrost heater at the plug-in
connector.
Disconnect
Slide Off
Disconnect
2. The evaporator heater is held in place by
metal tabs on the drain trough. Carefully
lever-open the metal tabs as shown.
3. Carefully remove the defrost heater from the
evaporator.
Extremely Important: When installing a new
defrost heater, ensure that it rests securely on
the bottom of the drain trough. Failure to do this
will result in water freezing in the drain hole and a
repeat service call.
Metal Tab
4. Wind the new fill tube heater around the fill
tube.
5. Cover the fill tube heater with heat-shrink
tubing, then apply heat to ensure a tight fit.
6. Connect the fill tube heater at the plug-in
connector.
Drain Trough
Evaporator Heater

– 18 –
To remove the condenser fan motor and
shroud:
The condenser fan motor and shroud assembly
can be removed as one unit.
1. Remove the 3 Phillips-head screws that
hold the condenser fan motor and shroud
assembly in place.
Note: The 3 Phillips-head screws are located
on the base plate of the machine compartment.
The screws are mounted from underneath and
can only be accessed by tilting the refrigerator or
placing it on its side.
2. Disconnect the fan motor at the wiring
junction box.
3. Tilt the condenser fan motor and shroud
assembly under the compressor discharge
line and slide it out of the machine
compartment.
1. Slide the fan blade off the motor shaft.
2. Remove the clips that hold the fan motor in
place (depress the tabs on each clip and lift
upward).
Condenser Fan
Run diagnostic mode 12 to test the circuit
between the power supply board, compressor,
and the condenser fan. (See Diagnostics and
Service Information.)
Voltage at L2 to N at the wiring junction box
should be 120 VAC. Condenser fan motor
resistance (black and gray wires) should be
approximately 135 Ω.
To remove the condenser fan motor:
The condenser fan motor can be removed from
the machine compartment without removing the
fan shroud.
3. Disconnect the fan motor at the wiring
junction box. Remove the condenser fan
motor.
Holding Clips

– 19 –
Compressor
Run diagnostic mode 12 to test the circuit
between the power supply board, compressor,
and the condenser fan. (See Diagnostics and
Service Information.)
Voltage at L2 to N at the wiring junction box
should be 120 VAC.
Compressor resistance values:
Common to start - 6 Ω.
Common to run - 4 Ω.
R
S
C
Run Capacitor
The run capacitor is located in the middle of the
machine compartment between the compressor
and the condenser fan assembly. It is threaded
into the machine compartment base-plate.
To remove the run capacitor, disconnect
the wiring at the junction box and turn
counterclockwise until free.
Check for shorted or open condition on the
capacitor's blue and red wires at the junction box.
Water Valve
The water valve is located on the right side of the
machine compartment in front of the condenser. It
is attached by a single 7-mm hex-nut.
Water Valve
Check for 120 VAC at K2 on the power supply
board when the icemaker is in fill mode.
Resistance should be approximately 182 Ω.

– 20 –
Component Locator Views
Drier
Condenser Fan
Power Supply Board
Condenser
Compressor
Note: The condensate pan is mounted to the top of the compressor. A bead of silicone foam has
been applied to prevent noise caused by vibration. This bead can be broken by use of a putty knife or
screwdriver.
Run Capacitor
Junction Box
Machine Compartment
Condensate Pan
Water Valve