GE GFW450SSM User manual

FOR SERVICE TECHNICIAN ONLY—DO NOT REMOVE OR DESTROY
31-16932 11-17 GEA
Printed in China
GFW450SSM
GFW450SPM
GFW430SSM
GFW400SCM
MINI-MANUAL
Risque de choc
électrique
Vous pouvez être tué ou gravement blessé si vous ne suivez
pas ces instructions.
• Réparations seulement par un technicien qualifié.
• Débranchez l’alimentation électrique avant la réparation.
• Rebranchez tous les dispositifs de mise à la terre après la
réparation.
• Remettez toutes les pièces et panneaux en place avant
d’utiliser l’appareil.
AVERTISSEMENT
Riesgo de Descarga
Eléctrica
Usted puede morir o sufrir lesiones graves si no siguen estas
instrucciones.
• El servicio técnico sólo debe ser realizado por un técnico
calificado.
• Desconecte el suministro de corriente antes de realizar el
servicio técnico.
• Luego del servicio técnico, vuelva a conectar todos los
dispositivos de conexión a tierra.
• Reemplace todas las piezas y paneles antes de utilizar.
Electrical Shock Hazard
Death or serious injury can result from failure to follow these
instructions.
• Service by a qualified service technician only.
• Disconnect power before servicing this product.
• Reconnect all grounding devices after service.
• Replace all parts and panels before operating.
WARNING • This machine must be electrically grounded through the
grounding lead in the 3-prong power cord. The cord must be
plugged into a properly installed and grounded appliance outlet.
If local codes require an additional ground connection, use an
16-gauge or larger wire to connect the washer cabinet to an
established ground. In all cases the grounding method must
comply with all local codes and ordinances.
ADVERTENCIA
• Cette machine doit être mise à la terre par la broche de mise
à la terre du cordon d’alimentation à 3 broches. Le cordon doit
être branché dans une prise d’alimentation pour un appareil
électroménager correctement installée et mise à la terre. Si
les codes locaux demandent une connexion de mise à la terre
supplémentaire, utilisez un fil de calibre 16 ou supérieur pour
connecter le cabinet de la laveuse à une mise à la terre établie.
Dans tous les cas, la méthode de mise à la terre doit être
conforme à tous les codes et ordonnances locaux.
• Esta máquina debe estar conectada a tierra a través de una
clavija de conexión a tierra del cable de alimentación de 3
clavijas. El cable debe estar enchufado en un tomacorriente
para un aparato electrodoméstico correctamente instalado
y conectado a tierra. Si los códigos locales requieren una
conexión a tierra adicional, utilice un cable de calibre 16
o mayor para conectar el gabinete de la lavadora a una
conexión a tierra establecida. En todos los casos, el método
de puesta a tierra debe cumplir con todos los códigos y
ordenanzas locales.

2
FOR SERVICE TECHNICIAN ONLY—DO NOT REMOVE OR DESTROY
ESD problems are present everywhere. ESD may damage
or weaken the electronic control assembly. The new control
assembly may appear to work well after repair is finished, but
failure may occur at a later date due to ESD stress.
• Use an anti-static wrist strap. Connect wrist strap to ground
connection point or unpainted metal in the appliance.
–OR–
Touch your finger repeatedly to ground connection point or
unpainted metal in the appliance.
• Before removing the part from its package, touch the anti-static
bag to a green ground connection point or unpainted metal in
the appliance.
• Avoid touching electronic parts or terminal contact; handle
electronic control assembly by edges only.
• When repackaging failed electronic control assembly in anti-
static bag, observe above-mentioned precautions.
Programming the Control Board
• The replacement control board will always enter into test mode
t01 on initial power-up.
• If replacing the control board, the washer will not function until
the replacement control board has been programmed.
To program the replacement control board:
1. Reconnect power to the washer. (The display will now show
“---”, which means no model has been selected.)
2. Rotate the cycle knob until the correct model number is
displayed:
For GFW450SSM and GFW450SPM models
Display “2” = GFW450SSM and GFW450SPM
For GFW430SSM models
Display “1” = GFW430SSM
For GFW400SCM models
Display “3” = GFW400SCM
3. Press and hold the Start key for 3 seconds (or until a second
beep is sounded).
4. Press the Power key to reset the control.
NOTE: If an error is made in programming the control, enter test
mode and select t01. Then repeat steps 2 through 4.
Service Mode
To Enter:
Alternately press Temp - Delay Wash keys (minimum of
4 button presses within 30 seconds of plugging in washer).
To Exit:
Repeat press Power key.
Before testing washer operation, check the following:
• Is the power cord firmly plugged into a live circuit?
• Has a household fuse blown or circuit breaker tripped? Time
delay fuse?
• Are both hot and cold water faucets open and water supply
hoses unobstructed?
Before opening the washer make sure it is unplugged from
power outlet.
• Check all connections before replacing components. Look for
broken or loose wires, failed terminals, or wires not pressed into
connections far enough.
• The most common cause for control failure is corrosion on
connectors. Therefore, disconnecting and reconnecting wires
will be necessary throughout test procedures.
• Connectors: Look at top of connector. Check for broken or loose
wires. Check for wires not pressed into connector far enough to
engage metal barbs.
• Resistance check must be made with power cord unplugged
from outlet, and with wiring harness or connectors disconnected.
IMPORTANT
Electric Discharge (ESD) Sensitive Electronics
Diagnostic Guide

3
FOR SERVICE TECHNICIAN ONLY—DO NOT REMOVE OR DESTROY
CN2
CN7
CN13
CN5
CN4
CN3
CN8
CN1
1
1
1
1 4
1
1
3
1
1
AC Input
LN
L
N
Hot
Valve
Cold
Valve
Cold
Valve 2
N
L
N
L
N
L
Dispenser
Motor
N
L
Dispenser
Position
Switch
Water Sensor
1
Door Lock
1
Heater
L
N
Thermistor
1
Pump
LN
1
Inverter
IP1
L
N
Motor
Basket/Bearing
X: Wire Color
YY: Wire Gauge
X--YY
WWhite
BBlack
GY Grey
BL Blue
YYellow
GGreen
OOrange
RRed
BR Brown
PU Purple
PI Pink
G/Y Green with
Yellow
Main
Control B-18
W-16
R-16
B-16
R-20
R-16
BL-16
BL-20
BR-20
W-18
BL-16
R-16
O-22
R-20
W-20
R-20
Y-20
BL-20
R-20
Y-20
O-22
BR-22
R-22
Y-22
BL-22
O-22
B-22
B-16
BL-20
BL-20
BL-22
G/Y-16
G/Y-16
23
6
2
4
5
Power
Filter
1
23456
12
34
5
TACH2
TACH1
UVW
R-20
Y-20
Y-20
W-20
BL-20
B-20
23
2
23
2 3 4
5
0
0
E
Only for 450 models
Only for 400 and 430 models
Component Resistance
ȍ
Voltage
(V)
Water valve 980 120 AC
Thermistor 15 5 DC
Door Lock 47 120 AC
Dispenser 1470 120 AC
Pump 14 120 AC
Motor
(U-V,
U-W,
V-W)
5 195 AC
Water Level
Frequency (Hz) Inches of water
25694 0
25393 1
25013 2
24657 3
24292 4
23939 5
23586 6
23242 7
22904 8
22572 9
Thermistor Resistance Table
Temp
(°C)
Temp
(°F) 5HVLVWDQFHȍ
0 32 35975
5 41 28516
10 50 22763
15 59 18279
20 68 14772
25 77 11981
30 86 9786
35 95 8047
40 104 6653
45 113 5523
50 122 4608
55 131 3856
60 140 3243
65 149 2744
70 158 2332
75 167 1990
80 176 1704
85 185 1464
90 194 1262
95 203 1093
100 212 950

4
FOR SERVICE TECHNICIAN ONLY—DO NOT REMOVE OR DESTROY
SYSTEM DRAWING
(All models have parts in the same positions)
PRESSURE
SENSOR
VALVE FILTER
MOTOR
DOOR LOCK
HEATER
PUMP
INVERTER
1. Remove the detergent drawer (left is for 450\430 models and right is for 400 models).
2. Remove top panel. (If only servicing the
control panel for 450/430 models, this
step 2 is not required.)
3. Remove control panel (left is for 450\430 models and right is for 400 models).
Press tab
down
Press tab
down

5
FOR SERVICE TECHNICIAN ONLY—DO NOT REMOVE OR DESTROY
DETAILS FUNCTION
Test Name Action Sequence
t01 Personality
ID
Press Start Displays “---” if new board.
Rotate knob Display “1”=GFW430SSM.
Display “2”=GFW450SSM and GFW450SPM.
Display “3”=GFW400SCM.
Press and hold Start Program the desired model.
Press Power Returns to “t01”.
t02 Fault Codes
Press Start Displays most recent error code (E00=none).
Rotate the knob Displays previous error code (up to previous 10).
Press and hold Start Clear all error codes (and then displays E00).
Press Power Returns to “t02”.
t03 UI Software
Version
Press Start Alternate “UL” and UL software version.
Press Start Alternate “cod” and Control Software version.
Press Start Alternate “Inv” and Inverter Software version.
Press Power Returns to “t03”.
t04 LED’s
Press Start Loops on lighting LED’s, LCD, and cycle ID’s.
Press any button Beeps when depressed.
Press Power Returns to “t04”.
t05 Pump Press Start Displays “P” and pump for 60 seconds.
Press Power Returns to “t05”.
t06 Water Level
Press Start The control will display “water level frequency”. The water level frequency continues
updating on the 7-segment display until reaches wash 1 level.
Press Start Fill, until reaches wash 2 level.
Press Start Fill, until reaches overflow level.
Press Power Returns to “t06”.
t07
Cold Water
Valve (and
heater if
applicable)
Press Start For GFW400SCM and GFW430SSM models only: Displays temperature in °F, turns on
cold water until the wash 1 level is reached.
For GFW450SSM and GFW450SPM models only: Displays temperature in °F, turns on
cold water and fills the tub until the wash 1 level is reached. Then turns on heater for a
maximum of 5 minutes.
Press Power Pumps out water and returns to “t07”.
t08
Hot water
valve (and
heater if
applicable)
Press Start Displays “StE”. The control will turn on the steam water valve and fill the tub until the
wash 1 level is reached. The heater will then be turned on for a maximum of 1 minute
(only for GFW450SSM and GFW450SPM models).
Press Power Turns off the heater and returns to “t08”.
t10 Tumble Tub Press Start Displays “tt” and tumbles tub alternating the direction every 5 seconds.
Press Power Stops tumbling and returns to “t10”.
t11
Spin (Water
Pressure
Sensor
must work)
Press Start Spins to 400 RPM displaying increasing RPM.
Press Start For GFW400SCM, GFW430SSM, GFW450SSM and GFW450SPM models only:
Spins to 1300RPM (displays “D00”).
Press Power Stops spinning and returns to “t11” until it stops.
t12 Dispenser
Pres Start For GFW400SCM and GFW430SSM models only:
Start - Displays “ddt” and turns on HV to fill detergent compartment.
Start - Displays “bdt” and turns on CV2 to fill bleach compartment.
Start - Displays “Fdt” and turns on CV1 and CV2 to fill softener compartment.
Start - Displays “HCt” and turns on CV1 and HV to fill detergent compartment.
Press Start For GFW450SSM and GFW450SPM models only:
Start - Displays “pdt” and turns on HV to fill pre-wash compartment.
Start - Displays “ddt” and turns on HV to fill main dispensing compartment.
Start - Displays “bdt” and turns on CV to fill bleach compartment.
Start - Displays “Fdt” and turns on CV to fill softener compartment.
Press Power Pumps out water and returns to “t12”.
t13 EOL Press Start Starts EOL test sequence (NOT used in repair).
Press Power Returns to “t13”.

FOR SERVICE TECHNICIAN ONLY—DO NOT REMOVE OR DESTROY
6
TROUBLESHOOTING CHART
Fault
Code(s) Name & Description Repair Action
22, 23
Fill Timeout/Slow Fill.
Flood Protect Drain
Occurred.
Test water valves using T07 and T08.
Test Dispenser using T12.
Ensure manual water valves are fully open.
• Check if water strainers on solenoid valve assembly are clogged.
• Check for obstructions inside inlet water hoses.
• Ensure solenoid valves do not leak when the valves are de-energized and the washer is
powered down.
• Measure coil resistance for both valves; if outside range (1000–1250 ohms at room
temperature), replace solenoid valve assembly.
• Check wire harness and connections, check for proper voltage to components.
IF ABOVE STEPS DO NOT CLEAR THE PROBLEM, OR FOR ERROR CODE 23:
• Replace solenoid valve assembly.
31 Drain Timeout/Slow Drain.
Run Drain test t05.
• Ensure pump strainer is clean and free of debris.
• Check for obstruction inside the drain hose.
• Check pump impeller blades and bearing; if evidence of blade damage or seized bearings are
present, replace the pump.
• Check electrical connections at the pump motor and harness.
• Measure pump motor resistance; if outside range (9–14 ohms at room temperature) replace
the pump.
38, 39
Unable to Find Correct
Reservoir.
Dispenser Timeout.
Run dispenser test t12.
• Check for obstruction in dispenser mechanism and linkages.
• Check electrical connections at dispenser motor feedback switch and in harness.
• Check electrical connections of water valves in the harness.
IF ABOVE STEPS DO NOT CLEAR THE PROBLEM:
• Replace dispenser motor assembly.
42, 45,
46, 47,
48
Over trip/Over current.
No speed feedback.
Motor Over temp.
Heatsink Over temp.
Open Circuit.
• Ensure all 4 shipping bolts have been properly removed.
• Remove all foreign objects that may be lodged between inner and outer tub.
• Look for signs of seized bearing(s) on tub and drum motor, replace components as necessary.
• Inspect condition and mounting of door gasket, replace and re-mount as necessary.
• Ensure inner tub (drum) can rotate freely.
• Check harness and connections between inverter and motor.
IF ABOVE STEPS DO NOT CLEAR THE PROBLEM:
• Replace inverter or drum motor.
4A, 4B,
4C, 50,
52, 54
Under volts/Power up/
Over volts.
Unexpected Motor Fault.
Motor Control Wake Error.
No motor response.
• Measure AC outlet voltage, ensure correct range (102V to 132V AC).
• Check electrical connections at the drum motor, inverter.
• Check harness integrity between main control and inverter.
• Unplug the washer, wait 30 seconds, restart the washer.
• If the fault persists and re-appears – replace the motor drive.
56 Unexpected reset. • Replace the main control.
57, 58
Power interruption data
failed.
Communication Failed.
Model information failed.
• Unplug the washer, wait 30 seconds, re-start the washer.
60, 61,
63, 64
Door Lock/Unlock Failure.
Unexpected Door Open.
• Check integrity of wiring/connections between main control and DOOR LOCK mechanism.
• Investigate DOOR LOCK mechanism, check door microswitch operation, lock and unlock
solenoid continuity, contact integrity; replace DOOR LOCK mechanism if necessary.
62 System Contact Failure.
• Check integrity of wiring/connections, look for insulation breakdown and short circuit
conditions on the harness, replace harness if necessary.
• Check integrity and electrical connections of all loads (heater, pump, pressure switch, door
lock, solenoid valves, dispenser motor), replace respective components if necessary.
65 Water Level Sensor
Failure.
Run water level test t06.
• Check integrity of wiring/connections between Main Control and Water Level Sensor.
• Check integrity of Water Level Sensor, replace if necessary.
66, 67
Water Temperature
Sensor Open.
Water Temperature
Sensor Short.
Run cold water valve test t07.
• Check integrity of wiring/connections between main control and Thermistor Assembly.
• Using ohmmeter, measure Thermistor resistance; if outside expected range, replace
Thermistor Assembly.