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Marcone 2014 MSA Training
GE Mission 1 Front Load Dryer
1
GE Front Load Dryer
MODELS
GFDS250EF/GF GFDS255EF/GF
GFDS260EF/GF GFDS265EF/GF
GFDS360EF/GF GFDS365EF/GF
GHDS370EF/GF GHDS375EF/GF
GFDR480EF/GF GFDR485EF/GF
Note:
“0” models are White.
“5” models are either Metallic Carbon
or Ruby Red.
(GFDR480GF)
2
Warranty
3
Nomenclature
GFDR480GFWW
G - Brand: G = GE P = Profile
F - Configuration: F = Frontload
D - Product: D = Dryer
R - Key Feature: S = Standard R = Riser
480 - Options Package
E - Heater Type: E = Electric G = Gas
F - Model Year Designator
WW - Color: WW = White MC = Metallic Carbon
RR = Ruby Red
4
Features (480 Series)
GFDR480EF/GF GFDR485EF/GF • 8.0 DOE
• Chrome Door
• Chrome Knob with Rubber Grip
• Chrome UI Trim
• Steam
• 12 Cycles
• 5 Dryness Levels
• eDry
• eMonitor
• Detangle
• Interior LED Light
• Dryer Rack
• Integrated Riser
• DSM (RJ45) Capable
Available in White, Metallic Carbon & Ruby Red
Weight 183 lbs. Height: 47" Width: 28" Depth: 34-3/8"
5
Model / Serial Plate Location
The model / serial number plate is located behind the door, just under
the drum opening.
6
Mini-Manual (Tech Sheet) Location
The mini-manual is taped to the backside of the control panel along with
the UI/IMC board.
Control escutcheon has to be removed to access.
7
RJ45 Connector Location
The RJ45 connector is located
on the top rear of the machine.
In some areas, this will allow
consumers to connect to their
local energy grid via DSM
(demand side management).
DSM is used to better control
energy usage throughout the
home.
8
Rear view of dryer
Feature Definitions - Steam
Steam - A mist of room temperature water sprayed into the drum.
Steam is used on the "Steam Dewrinkle" and the "Steam Refresh" cycles.
9
Steam Dewrinkle - Used for loads left in the dryer for an extended period of time.
Steam Refresh - For slightly wrinkled dry garments. Significantly reduces wrinkles
on up to 5 garments. After the Steam Refresh Cycle, the unit will beep and display
“0:00.” If the unit is not turned off or if the door is not opened, the dryer will
continue to tumble for 30 minutes. At the end of 30 minutes, it will display “0:00”
and the cycle will be complete.
Feature Definitions - eDry
• eDry - Reduces the total energy consumption by adjusting certain heat
settings.
• eDry is selected by pressing the eDry Button.
Machine settings when eDry is selected:
Dry Temp = Low
Extended Tumble = eDry is Disabled
Sanitize = eDry is Disabled
10
Feature Definitions - eMonitor
eMonitor - Visual display of the energy
use of the appliance.
eMonitor Ranges:
Good (1 light) to Best (5 lights).
11
Feature Definitions – Detangle(1)
12
Detangle - Reduces tangling, dries more evenly, and improve drying times
by periodically reversing drum rotation direction.
Detangle is selected by pressing the Detangle button.
Feature Definitions – Detangle(2)
13
• When the Detangle feature is selected, the control will execute a reversing
tumble profile.
• When the Detangle feature is not selected, the control will execute a Non-
reversing tumble profile.
• When the Detangle Option is changed during the Run State, the control will stop
the drum, and start the new Tumble Profile.
• There is a delay of six seconds before reversing the Drum Motor to allow for an
empty/nearly empty drum to stop to ensure the drum motor has stopped to
ensure motor reversal.
NOTE: No heat will be applied during the clockwise tumbling steps of the tumble
profile.
NOTE: The Mist Valve will not be energized during the clockwise tumbling steps of
the tumble profile.
Feature Definitions – Dryness levels
14
• Dryness Level - Provides an option for consumers to end the dry cycle when the
clothes reach a certain moisture content.
• The dryness level is set by pressing the Level button.
Available Dryness Levels:
Damp
Less Dry
Dry
More Dry
Extra Dry
Feature Definitions - Integrated Riser
Integrated Riser - Adds an additional
7" of height to the unit.
15
Disassembly - Control Panel Removal(1)
Remove the cycle selector knob by pulling it forward.
16
Disassembly - Control Panel Removal(2)
Remove the cycle selector knob retainer by pulling it forward.
17
Disassembly - Control Panel Removal(3)
Remove the T20 Torx Head screw securing control panel to
frame.
18
Disassembly - Control Panel Removal(4)
Lift the control panel straight up to disengage the mounting
tabs.
19
Disassembly - Control Panel Removal(5)
Multiple cables / plugs connect the UI/IMC board to the
electromechanical components of the dryer.
20
Disassembly – Top Panel Removal
• Remove the control panel.
• Remove the 4 top panel screws.
• Pull the top panel forward to disengage the mounting
tabs, and then lift up.
Note: It may be
necessary to move
the top panel back-
ward and forward
while lifting to cause
the top panel to dis-
engage from the
mounting tabs.
21
Disassembly – Door Removal
• Remove the 2-T-20 Torx door hinge screws. The door
will remain in place after the 2 screws have been
removed.
• Lift up slightly on door assembly and pull forward.
22
Disassembly – Riser Front Panel Removal
• Tilt the dryer back and install prop blocks.
• Remove the 3 Riser front panel screws.
• Slide the panel to the left and pull forward.
NOTE: The dryer riser
panel does not have to
be removed in order to
remove the dryer front
panel. Prop blocks removed for better viewing
23
Disassembly - Front Panel Removal(1)
24
• Remove the control panel.
• To reduce weight, remove the door assembly.
• Remove the 4 front panel screws located at the top of the
front panel.
Disassembly - Front Panel Removal(3)
25
• Next, remove 3 Phillips head screws securing front panel to
drum support.
Disassembly - Front Panel Removal(4)
26
• Tilt panel forward an inch or two and remove the two wires
from the door switch.
Disassembly - Front Panel Removal(5)
27
• Remove front panel and set aside.
Disassembly – Trap Duct Assembly(1)
28
• To remove trap duct: 1. Remove three ¼” hex head screws.
2. Grasp duct assembly and pull straight down & out.
Disassembly – Trap Duct Assembly(2)
29
• Removal of trap duct assembly provides ample room to
access belt, pulleys & some other components through the
front of the machine.
Disassembly – Blower Wheel
30
Removal: After removing trap duct assembly:
1. Remove two ¼” hex head screws and lift blower wheel cover from
slot at bottom of housing.
2. While holding motor shaft with channel locks, remove 9/16 nut holding
blower wheel to shaft. Nut is reverse threaded.
Disassembly – Drum Support & Drum(1)
31
Removal: 1. After removing trap duct
assembly, remove 4- ¼” hex
heads securing control
assembly bracket.
2. Flip back control bracket so a
to clear drum support.
3. Remove 4 additional ¼” hex
heads (one from each arm of
support).
4. Support will stay in place with
screws removed because of a
tab from each arm into side
panel.
Disassembly – Drum Support & Drum(2)
32
Removal: 5. Lift drum support upwards
slightly to release tab at each
arm.
6. Reach behind drum support
after releasing from side panel.
With needle nose, squeeze
back side of the four wire
clamps (two on either side of
drum support.
7. Remove drum support from
machine and set aside.
Disassembly – Drum Support and Drum(3)
33
• Lift panel approximately two inches to release from the two
pin supports on either side and the three tabs at the bottom.
• Do not remove at this point. See next step
Disassembly – Drum Support & Drum(4)
34
Removal: 8. Remove belt from pulleys if
necessary.
9. Using belt as a handle lift drum
and remove from machine.
Disassembly – Rear Panel(1)
35
• To removal rear panel: 1. Remove control panel & dryer top panel.
2. Remove ¼” hex head screws around the perimeter of rear panel.
3. Remove ¼” hex head securing water valve to rear panel.
4. Lift off and remove panel from dryer.
Disassembly – Rear Panel(2)
36
• Removal of rear panel (if dryer location permits) allows for
additional room to access belt, pulleys & other components.
• Provides for access to components that are only accessible
from rear of machine, i.e. inlet thermistor.
Inlet Thermistor
Components – UI/IMC Board(1)
The UI/IMC Board has 3 functions:
1) Allows for cycle and cycle modifier selection.
2) Provides information to the user.
3) Contains software instructions for general machine operation.
37
Remove six 5/16” screws from control to separate it from the control
panel housing.
Components – UI/IMC Board(2)
38
The control itself, the control panel housing or escutcheon and
what they call “button trees”, all come as separate components.
Control
Control Housing Button Tree Button Tree
Components – UI/IMC Board(3)
Board Layout:
39
J8
J1
J6 J5
J14 J2
J3
J9 J7 J4
Components – Motor – (120vac Reversible Motor)
To Remove Motor:
1. Using a flat blade screwdriver lift up and release spring clips at front
and back of motor.
2. Lift tabs at top & bottom of power plug and pull out to release.
3. Lift motor from machine.
40
Power Plug
Components – Idler Pulleys
Dryer uses a dual pulley system with a spring between the two Idler
arms to provide for belt tension.
41 (Front View)
Components - Belt
Standard dryer belt (WE12X10020) fed around drum, motor pulley and two
idler pulleys.
42
Rear View
Rear View
Components - Belt Switch
1. Belt switch is mounted to the back side of the rear motor mounting
plate.
2. With belt intact, switch is closed providing a path for Neutral to the
motor circuit.
3. If belt breaks, idler arm falls and a “foot” on the arm depresses switch
arm opening the Neutral circuit to the motor.
43
(Rear View)
Components - Gas Valve
• Standard three coil gas valve mounted to the burner bracket with three
¼” hex head screws.
• At this point, GE parts breakdown shows no replacements for the coils.
The complete gas valve is one component. (WE14X10109).
44
Components - Gas Valve - Operation
45
L
L1 N
Components - Gas Valve – LP Conversion
46
• The dryer gas valve has capability of being converted to LP use and then
back to natural gas.
• All dryers are shipped from the factory set up for natural gas.
Components – Ignitor(1)
The glo-bar ignitor is made of a ceramic material and therefore is extremely
fragile. Care must be exercised when replacing.
Removal / Replacement:
1. Begin by removing three ¼” hex
head screws securing top of burner
assembly.
2. Remove burner top.
47
Components – Ignitor(2)
Removal / Replacement:
3. With a stubby ¼” driver or socket,
remove ¼” hex head securing
ignitor to burner bracket.
4. Disconnect power plug to ignitor.
48
Components – Ignitor(3)
Removal / Replacement:
5. After removing mounting screw,
lift ignitor mounting bracket clip
from burner bracket.
6. Remove ignitor from dryer burner
assembly.
49
Components - Flame Detector
1. The flame detector is secured
to the burner tube with a tab
and a ¼” hex head screw.
2. The flame detector should
normally be closed. (0 Ω)
50
Components – Heater Assembly
51
The heater and enclosure (minus the thermostats) comes as an assembly.
(WE11X10025)
Heater utilizes 240 volts. Each heater is @ 20Ω and draws 12 amps.
Components - Steam Valve
• The steam valve is a 120vac water valve that is attached to the rear
panel in the upper left hand corner.
• The steam valve can be checked using Service Mode Test t11.
52
Components – Steam Nozzle(1)
53
• The steam nozzle is located inside the rear drum support.
• The steam nozzle consists of a brass orifice and a fine filter screen.
• If the orifice should become plugged or restricted, it should not be cleaned.
• Replace a plugged or restricted steam nozzle.
Components – Steam Nozzle(2)
54
• The steam nozzle can be replaced without disassembly of the dryer.
• Replacement can be performed inside the drum area.
• A 7/16” or 11-mm nut driver can be used to unscrew the nozzle from the
base.
Note: The replacement steam nozzle will have thread lock pre-applied to
the screw threads.
Nozzle with Thread Lock Applied
Rear view of nozzle base
Components – Door Switch
• The door switch opens and closes the neutral line to the motor circuit
and informs the control whether the door is open or closed.
• The door switch can be checked using Service Mode Test t10.
55
Components – Drum Light
• On models so equipped, there is a 3vdc LED drum lamp that snaps
into an opening in the top front of the drum support panel.
• The LED receives it’s voltage directly from the control board.
• Other models that use an incandescent bulb, it is the 120vac variety
and is powered off of the door switch.
56
Components - Sensing Rods(1)
57
Sensor Rods are located on the back side of the drum support just below
the lint trap.
Components - Sensing Rods(2)
58
• Sensor Rods (Grey & Pink wires) have a disconnect plug behind the front
panel.
• Sensor rod moisture system can be checked using Service Mode Test t9.
Components – Drum Rollers
59
• The drum rides on four rubber rollers.
• They are located on the lower, inside portion of the drum support panels.
• All four rollers are the same part number. (WE01X10384)
Components – Hi-Limit Thermostat
60
• Under normal operating conditions this thermostat will remain closed at
all times. It is used to prevent the heater assembly from getting too hot
to safely operate.
• When the hi-limit thermostat opens, it interrupts line voltage to the
UI/IMC causing the board to lose power.
• Resets Automatically.
Locations
Gas Models Electric Models
X
X
Components – Inlet Back-up Thermostat
61
• Under normal operating conditions this thermostat will remain closed at
all times, allowing the heaters to cycle based on inlet and outlet
thermistor values.
• When the inlet backup thermostat opens, it interrupts line voltage to the
heater or gas valve relays on the UI/IMC.
• Resets Automatically
Locations
Gas Models Electric Models
X X
Components – Outlet Back-up Thermostat
62
• Under normal operating conditions this thermostat will remain closed at
all times, allowing the heaters or gas valve to cycle based on inlet and
outlet thermistor values.
• When the inlet backup thermostat opens, it interrupts line voltage to the
heater or gas valve relays on the UI/IMC.
• Resets Automatically
Locations
Gas Models Electric Models
X
X
Components – Inlet Thermistor
63
• The inlet thermistor provides air inlet temperature to the UI/IMC board.
The board uses this information to cycle the heaters or the gas valve on
and off.
• If an inlet thermistor fault is detected, the heaters or gas valve will cycle
on the inlet and outlet backup thermostats.
Gas & Electric Models
X
Components – Outlet Thermistor
64
• The outlet thermistor provides air inlet temperature to the UI/IMC board,
the board uses this information to cycle the heaters and gas valve on
and off.
• If an outlet thermistor fault is detected, the heaters or gas valve will cycle
on the inlet and outlet backup thermostats.
Gas & Electric Models
X
Components – Thermistor Resistances
65
Temperature/Resistance Chart:
50.0 (F) - 199.0K
69.8 (F) - 119.4K
75.2 (F) - 104.4K
80.6 (F) - 91.6K
86.0 (F) - 80.5K
89.6 (F) - 74.0K
95.0 (F) - 65.3K
100.4 (F) - 57.7K
105.8 (F) - 51.1K
111.2 (F) - 45.4K
116.6 (F) - 40.4K
120.2 (F) - 37.4K
149.0 (F) - 20.8K
199.4 (F) - 8.3K
Service Mode(1)
66
• The Control must be in the Idle State in order to enter
Service Mode. (System powered off. All LEDs off.)
• The Following Key Sequence must be pressed:
My Cycle -> Delay Dry -> My Cycle -> Delay Dry.
Service Mode(2)
67
• The sequence must be completed in order. If there is any
other key press or the keys are pressed out of order, the
sequence must be started from the beginning.
• Upon entering the Service Mode, there will be a beep and
the control shall be in test selection mode display
beginning with test number 1 (T1).
t1
Navigating Service Mode Tests
68
• Rotating the knob counter clockwise shall decrement the
test number in the display.
• Rotating the knob clockwise shall increment the test
number in the display.
• Once the test number is selected, pressing Start/Pause
shall begin the selected test.
• Individual Service Mode tests are exited by turning the selector knob
to a different test number.
NOTE: If there is no model information programmed, all segments of the
7-Segment Display and LEDs shall blink and must be set as described
in the (t1) section Setting Model Codes on an Uninitialized UI Card prior
to entering Field Service Mode.
Exit Service Mode
69
• Field Service Mode shall time out after 5 minutes if there
is no user activity.
• Pressing the Power key or unplugging power to the
machine will exit Field Service Mode.
Service Mode Tests
70
Service Mode Tests
71
(t1) Setting and Viewing Model Codes:(1)
Displaying Model Codes:
When entering the test the User Interface Mode Type is displayed as a
three digit decimal number.
When Start key is pressed the Heater Type is displayed on the 7-
segment display as "g" for Gas or "E" for Electric
Each time the user presses Start key, the 7-segment display will alternate
between display of one of the previous two fields.
The combination of these two Model Codes can be used to determine the
Dryer Model Number.
Service Mode Tests
72
(t1) Setting and Viewing Model Codes:(2)
Setting Model Codes:
In the Dryer Model Codes (t1) test when Displaying Model Codes by
simultaneously pressing the two buttons Temp & Level the dryer Model
Codes can be set.
First the current User Interface Mode Type is first displayed and can be
adjusted as follows:
*** Pressing key Level will wrap though valid User Interface
Mode Type for the dryer and it increases until it wraps to the
lowest valid number.
*** Pressing key Temp will wrap thought valid User Interface
Mode Type and it decreases until it wraps to the highest valid
number.
Service Mode Tests
73
(t1) Setting and Viewing Model Codes:(3)
Pressing the Start key will temporarily save the User Interface Mode
Type.
Next the current Heater Type selection is displayed as "g" Gas or "E"
Electric.
Pressing Temp or Level key will alternate the 7-segment display
between the two Heater Type selections.
Pressing the key Start for 3-seconds will store the both the User
Interface mode and Heater Type into non-volatile memory.
If the sequence is interrupted the User Interface Mode and Heater Type
will not be saved.
Service Mode Tests
74
(t1) Setting and Viewing Model Codes:(4)
Once the Heater Type and User Interface Mode have been successfully
set in this test the unit will sound a valid tone and go to Idle Mode.
Service Mode Tests
75
(t2) UI Software Version Check:
The control shall display the Software Version Number in decimal
number system on the 7-segment display automatically alternating
between:
*** The 2-digit Major Software Version number and the LED for
the Extended Tumble key will be turned on.
*** The 2 digit Minor Software version number and the LED for
the Damp Alert key will be turned on.
Service Mode Tests
76
(t3) XML Version Check:
The SSD control shall display the XML Version Number in the decimal
number system automatically alternating between:
*** Displaying the 2-digit Major XML Version number and the
LED for the Extended Tumble key will be turned on.
*** Displaying the 2 digit minor XML version number and the
LED for the Damp Alert key will be turned on.
Service Mode Tests
77
(t4) Error Codes:
The control shall display the most recent error in the fault log upon entry
into the display error codes test. If there are no errors in the fault log,
then No Error Code (“000") shall be displayed on the 7-segment display.
The control shall clear the displayed error from the fault log if the Start
button is pressed during the display error codes test.
After clearing the displayed error from the fault log, the appliance shall
display the next most recent error from the fault log.
After clearing all errors from the fault log, the control shall display the
("000“) code on the 7-segment display.
The control shall log the last 8 error codes in the non-volatile memory
stored in a circular list.
Error Codes
78
Service Mode Tests
79
(t5) CRC Non-volatile Memory Test:
The Control shall compute the 16-bit CRC of the non-volatile memory
and compare it with the pre-computed 16-bit CRC that is stored in the
non-volatile memory.
The Control shall sound the Button Press Beep and display “EP" on the
7 segment display after successful 16-bit CRC comparison.
The Control shall display “Er" on the 7-segment display and sound the
Invalid Button Press beep if the 16-bit CRC fails.
Service Mode Tests
80
(t6) User Interface Test:
The Control shall turn on all indicators on the 7-segment display and turn
on all LED indicators.
A key test is active with this test, when a key is pressed (other than the
Power Key) it will sound a Valid Key Tone.
Service Mode Tests
81
(t7) Outlet Thermistor Test:
The Control shall display the Outlet Thermistor temperature in degrees
Fahrenheit on the 7-segment display during the test.
* The Control shall start the drum motor during the test.
* Electric Units will turn on both the Inner and Outer Coil during the test.
* Gas units shall turn on the Gas Valve and Igniter during this test.
* Opening the Dryer Door will turn off the drum and heater source.
* The Control shall turn off the motor and all heater sources before
exiting this test.
Service Mode Tests
82
(t8) Inlet Thermistor Test:
The Control shall display the Inlet Thermistor temperature in degrees
Fahrenheit on the 7-segment display during the test.
* The Control shall start the drum motor during the test.
* Electric Units will turn on the Inner Coil during the test
* Gas units shall turn on the Gas Valve and Igniter during this test.
* Opening the Dryer Door will turn off the drum and heater source.
* The Control shall turn off the drum motor and all heat sources before
exiting this test.
Service Mode Tests
83
(t10) Door Open / Closed Test:
The control shall display “dc” if the door as closed or “do” if door is
opened.
Service Mode Tests
84
(t11) Water Valve Test:
* The control shall turn on the water valve relay and the drum motor when the
start button in pressed (“On” will be displayed). When the start button is
pressed again the relay will be turned off (“OFF” displayed).
* A beep shall be sounded every time the start button is pressed.
* Control will turn off the valve and the drum motor when the door is opened.
* The control will turn off the valve and the drum motor when the test mode is
changed.
* The control shall turn off the valve and the drum motor if the Field Service
mode is exited.
* When the valve and drum motor are turned off by the previous three
conditions when the executing the test, the user must press start to restart the
test to turn on the drum motor and steam relay.
Service Mode Tests
85
(t12) Restore EEPROM Values:
If the start button is pressed the default EEPROM values will be
restored except; Heater Type Mode and User Interface Type Mode
which will remain unchanged.
If restored properly then “EP” will be displayed on the seven-segment
display. (PASS)
If there was an error then “EF” will be displayed. (FAIL)
Until default EEPROM values are restored any user input including
control knob change and Power key will be locked out.
Service Mode Tests
86
(t13) Drum Test:
The control shall start the drum rotation in the forward direction for 30
seconds and the 7-segment display will display “On”.
If the test is ran on models which support the detangle feature, a pause
duration including a six second drum motor reversal delay (to ensure an
empty drum reverses) will occur.
Then the control will start the drum rotation in the reverse direction for
30 seconds and the 7-segment display will continue display “On”.
Rotation will then stop and 7-segment display will display “OFF”.
Note: Opening the Dryer Door will cause the drum motor to stop and
“OFF” will be displayed. Exiting the test will turn off the drum rotation.
Schematic (Electric)
87
Schematic (Gas)
88
END OF
PRESENTATION
THANK YOU FOR YOUR
ATTENTION …….
89
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