GE GFDS355GLMV, GFDS350GLWW, GFDN240ELWW, GFDS355GLMS, GFDN240GLWW Service Manual

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Page 1

GE HA Dryer Upgrade – GFDS350 Series

GE® 7.5 cu. ft. stainless steel capacity dryer with Steam Options

Models:

GFDS350ELWW GFDS350GLWW GFDS355ELMV GFDS355GLMV GFDS355ELMS GFDS355GLMS

Service Guide

31-9209

GWS2011

Page 2

GE HA Dryer Upgrade – GFDN240 Series

GE® 7.0 cu. ft. stainless steel capacity dryer

Models:

GFDN240ELWW GFDN240GLWW GFDN245ELMS GFDN245GLMS GFDN245ELMV GFDN245GLMV

NOTE: 240 series is the same as

the 350 series but without steam & a slightly smaller drum.

GWS2011

Page 3

IMPORTANT SAFETY NOTICE

The information in this presentation is intended for use by individuals possessing adequate backgrounds of electrical, electronic, & mechanical experience. Any attempt to repair a major appliance may result in personal injury & 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 & properly fastened.

Page 4

GE Factory Service Employees are required to use safety glasses with side shields, safety gloves & steel toe shoes for all repairs.

Plano Type Safety Glasses

Dyneema® Cut

Resistant Glove

Electrically Rated Glove

and Dyneema® Cut

Resistant Glove Keeper

Plano Type Safety Glasses

Steel Toe Work

Boot

Brazing Glasses

Prescription Safety Glasses

Safety Glasses must be

ANSI Z87.1-2003 compliant

Page 5

Warranty

Page 6

Model / Serial

The full model / serial tag is located on the front panel inside the door opening. There is also a barcode sticker that displays the model & serial and is located on the left, front of the top panel.

Page 7

Mini-Manual

Mini-Manual is located inside control housing.

Page 8

Nomenclature

Page 9

Installation

These Laundry products can be installed in several different configurations:

Undercounter

Side-by-Side.

Pedistal

Stacked

Dryer can be stacked on the washer. Kit for stacking dryer over washer is not included with the washer.

Order GEFLSTACK.

Machines can be stacked on a pedestal. These can be ordered separately.

SPSD157JMV – Vermillion SPSD157JMS - Silver SPSD157JWW - White

Adobe Acrobat

Stacking Instructions. Open in “Normal View”.

Document

Page 10

Installation – Water Line

To produce steam, the dryer must connect to the cold water supply. Since the washer must also connect to the cold water, a “Y” connector is inserted to allow both inlet hoses to make that connection at the same time.

NOTE: Use the new inlet hoses & “Y”

connector provided; never use old

hoses. (Hose kit - Long & short hoses, washers & “Y” connector - WE25M53)

Page 11

Installation - Venting

These dryer models can be vented through the rear, the side or the bottom

of the cabinet.

STANDARD REAR EXHAUST

Dryer Exhaust to the rear of cabinet for Gas and Electric models.

SIDE VENTING:

Dryer Exhaust to right of cabinet for Electric models only. Dryer Exhaust to left of cabinet for Gas and Electric models.

BOTTOM VENTING:

Dryer Exhaust to the bottom of cabinet for Gas and Electric models.

Page 12

Installation – Demo Mode

To enter demo mode:

Turn the unit off so the screen is blank. Then unplug the unit, wait 10 seconds. Plug the unit back in.

Within 30 seconds after plugging in the unit, press the Start/Pause

button 4 times within 3 seconds with the door open.

To exit Demo Mode:

Repeat the above sequence.

Note: In the Demo Mode, the control will proceed through the

selected cycle but will not actually activate any components.

Page 13

Features – Steam Cycles

Steam Refresh

For slightly wrinkled dry garments. Significantly reduces wrinkles on 1–5 garments. Selecting a higher number of garments for the cycle (e.g., selecting 5garment load for a 1-garment load) may result in excessive wetting of

clothes. After the STEAM REFRESH Cycle, the unit will beep and display

“Garments Ready” and “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 “Cycle Complete.”

NOTE: When STEAM REFRESH is selected, “EXTENDED TUMBLE” will automatically turn on and cannot be turned off.

A single extremely light fabric item may need to have an additional item included in the steam refresh cycle to achieve optimum results.

Page 14

Features – Steam Cycles

Steam Dewrinkle

For use with larger loads than STEAM REFRESH. Ideal for

loads left in dryer for an extended time. Selecting a larger cycle than needed (e.g., selecting Large Load for a half-full dryer) may result in excessive wetting of clothes.

Page 15

Features – Lint Filter Message

“CLEAN LINT FILTER” (message) This message represents only a

reminder and does not

should be cleaned after every drying cycle is complete.

This message will disappear after the START button is pressed. Message may

appear even though you may have already cleaned the filter.

always appear when the filter needs cleaning. The filter

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Features – e Dry

Reduces the total energy consumption of specific dryer cycles by adjusting certain heat settings and extending dry times.

NOTE: Cycle times will change when e-Dry is selected.

This cycle can be used with DELICATES, ACTIVE WEAR, EASY CARE, NORMAL/MIXED LOADS and COTTONS.

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Features – Drying Rack

• The drying rack is designed for use with the TIMED DRY cycles.

• Use with sensor cycles may result in damp items or extended cycle times.

• Do not use this drying rack when there are other clothes in the dryer

that are not placed on the rack.

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Features – Drying Rack

• To install the drying rack, pull up the lint filter slightly.

• Insert the drying rack into the slots, then push the filter

back into place.

Page 19

Features – Door Swing Reversal

Instructions for reversing door swing are included in the Use & Care.

• Read the instructions all the way through

before starting.

• Handle parts carefully to avoid scratching

the paint.

• Set screws down by their related parts to

avoid using them in the wrong places.

• Provide a non-scratching work surface for

the door.

• Normal completion time to reverse the door

swing is 30-60 minutes.

Adobe Acrobat

Door Reversal Instructions. Open in “Normal View”.

Document

Page 20

Disassembly – Top Panel

1. Remove the Phillips-head screw that attaches the control panel rear trim. Pull the trim piece backward and remove.

Note: It may be helpful to place a putty knife along the top seam

between the trim and the control panel, then tap lightly backward.

Page 21

Disassembly – Top Panel

2. Remove the 2 Phillips-head screws that attach the top panel to the cabinet.

3. Raise the front of the top panel approximately 3 inches, then pull forward to clear the rear tabs. Lift off top panel.

Page 22

Disassembly – Control Panel

Removal of the control panel provides access to the control board assembly.

To remove the control panel:

1. Remove the cycle selector knob by pulling outward.

Page 23

Disassembly – Control Panel

2. Remove the Phillips-head screw underneath the cycle select knob.

Page 24

Disassembly – Control Panel

Disconnect

3. Lift the control panel off vertically to disengage hooks from grommets on washer front.

4. Disconnect the wire harness.

Page 25

Electronic Control System

Power Board

Control Board

The electronic control consists of a control board (UI) and a power board.

Page 26

Electronic Control System

To remove the electronic control board:

1. Set the control panel in the service position.

2. Remove the 6 Phillips-head screws that attach the selector board to the control panel.

Page 27

Electronic Control System

To remove the electronic power board:

1. Remove the top panel.

2. Disconnect 11 wires and wiring harnesses from the power board.

3. Remove the 2 Phillips-head screws to release the power board from the power board bracket.

Page 28

Electronic Control System (Model Select plug)

J5 Model Select Plug

Note: If replacing the electronic control, transfer the model selector

harness at J5, to the replacement control board in the same location as on the original.

Page 29

Electronic Control System (Model Select plug)

J5 Plug Configurations:

Electric Models

Gas Models

(Non – Steam)

Page 30

Disassembly – Front Panel

Disconnect

To remove the front panel:

1. Remove the top panel and control panel.

2. Disconnect the drum lamp / door switch wire harness and the sensor rod wire harness connected to the power board.

3. Remove the 2 Phillips-head screws from the front panel bracket.

4. Remove 4 Phillips-head screws from the front panel bracket.

5. Lift the bracket out of the hinges and set aside.

Page 31

Disassembly – Front Panel

Bottom of Front Panel

6. Loosen several turns but do not remove the 2 Phillips head screws from the bottom of the front panel.

7. Remove 2 Phillips-head screws from the top of the front panel.

Page 32

Disassembly – Front Panel

8. Tilt the top edge of the front panel out and press on the John Guest connector collar to release the water line.

9. Lift front panel from the bottom two screws and set aside.

Page 33

Disassembly – Air Duct Assembly

NOTE: The trap duct felt seal can be

Trap Duct Felt Seal

Sensor Rod Ground Wire

replaced by extracting the seal from the channel located on the air duct assembly.

The air duct assembly houses the lint filter, steam nozzle, drum seal, and the 2 sensor rods. It is located on the back side of the front panel.

To remove the air duct assembly:

1. Remove the front panel.

2. Remove the single Phillips-head screw that attaches the sensor ground wire to the cabinet.

Page 34

Disassembly – Air Duct Assembly

3. Remove the 2 Phillips-head screws that attach the air duct assembly to the front panel.

4. Grasp each side of the air duct assembly and unsnap the air duct from the front panel.

Caution: Upon reassembly, ensure that the door switch, drum light, and

sensor wiring are retained and routed properly to avoid contact with the drum.

Page 35

Disassembly – Air Duct Assembly

4. Grasp each side of the air duct assembly and unsnap the air duct from the front panel at the points indicated.

Caution: Upon reassembly,

ensure that the door switch, drum light, and sensor wiring are retained and routed properly to avoid contact with the drum.

Page 36

Disassembly – Drum Slides

rt o p

e d

The drum slide assembly is located on the back side of the front panel and utilizes 4 drum slides. Two white outer slides are used as guides, and 2 dark color center (top) slides are used to support the weight of the drum. When replacing the slides, the dark-colored support slides must be used to replace the top support slides. Guide slides may also be replaced with support slides.

Caution: Do not replace the center (top) support slides with the white guide slides.

Damage to the dryer will result.

Page 37

Disassembly – Drum Slides

abbed

end

To Remove Drum Slides: (Remove top panel, control panel then tilt the

front panel outward.

1. Grasp individual slides at the non-tabbed end and pry up slide.

2. Release slide from tab on duct assembly and remove.

Page 38

Disassembly – Steam Nozzle

The steam nozzle is located inside the front of the dryer on the right side of the air duct assembly. 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.

Page 39

Disassembly – Steam Nozzle

Nozzle with Thread Lock Applied

The steam nozzle can be replaced without disassembly of the dryer. Replacement can be performed by opening the dryer door to access the steam nozzle. A 7/16” or 11-mm nut driver can be used to unscrew the nozzle from the air duct assembly.

Note: The replacement steam nozzle will have thread lock pre-applied to

the screw threads.

Page 40

Disassembly – Steam Nozzle Connector

1. Remove the air duct assembly.

2. Press on the John Guest connector collar and release the water line from the steam nozzle connector.

3. Remove the Phillips-head screw that attaches the nozzle to the nozzle housing.

4. Pull the nozzle connector out of the housing.

Page 41

Disassembly – Door Switch

Locking Tabs

Door Switch Front View

Door Switch Rear View

The door switch is fastened to the front panel by 2 locking tabs (1 on each side). When the dryer door is closed, the switch will complete the drum motor circuit, allowing dryer operation. When the door is open, the switch will open the drum motor circuit, interrupting dryer operation. Opening the dryer door will also cause the door switch to close the drum light circuit, allowing the drum light to be energized.

Page 42

Disassembly – Moisture Sensor

Moisture Sensor Rods (2)

The moisture-sensing circuit consists of 2 sensor rods. They are mounted beneath the lint filter on the drum side of the air duct. Operation of the moisture sensor can be checked by using service test mode T07.

Page 43

Disassembly – Moisture Sensor

Plug connecting sensor

rods to J7 on control

board.

The dryer will signal when the clothes are at 17% moisture level if equipped with a damp signal that has been selected. Approximate values for dryness level: Damp = 17% Less dry = 12% Dry = 2-6% More dry = <2%

Page 44

Disassembly – Moisture Sensor

The sensor rods are connected to the main control board. The rods are spaced approximately ½-in. apart, which creates an open circuit to the control.

The control board utilizes a lowvoltage capacitor that charges to approximately 5 VDC when the circuit is open and discharges to less than 1 VDC when the circuit is shorted.

When wet clothes tumble across the two rods, the clothes create a very low resistance between the rods, which discharges the capacitor.

As the clothes become dry, their resistance value increases and the

charge across the capacitor builds to approximately 5 VDC.

Page 45

Drive Belt

Pulley shown in locked position

Idler Pulley

Idler Arm

The drive belt (Part #WE12M29) is a 4-rib belt and extends from under the motor pulley, over the top of the idler pulley, and around the perimeter of the dryer drum. (See belt diagram.) Belt tension is maintained by the idler pulley and driven by a pulley attached to the motor shaft.

Page 46

Drive Belt

Pulley shown in locked position with motor cover removed.

WARNING: The idler arm

is under high tension. To prevent injury, do not let the idler arm snap back

Idler Arm Locking Tab

To remove the drive belt:

1. Remove the front panel.

2. Reach under the left-hand side of the drum, push the idler pulley down and to the right, and lock the idler arm on the top corner of the motor bracket to release belt tension.

3. Remove the belt from the motor pulley and remove through the front of the dryer.

Page 47

Installing the Drive Belt

1. Remove the front panel.

2. Reach under the left-hand side of the drum, push the idler pulley down and to the right, and lock the pulley shaft on the top corner of the motor bracket.

3. Place the belt in position around the center of the drum through the front of the dryer.

4. Place the belt in position around the motor pulley (see diagram), release

View from rear of dryer

the idler pulley from the motor bracket, and guide onto the belt.

Note: Check to make sure the belt is

in place and not twisted before installing the top and front panels.

Page 48

Belt Switch (Idler Switch)

A belt switch, activated by the idler arm, is fastened to the motor bracket by 2 screws. Should the drive belt break, the belt switch will open the drive motor circuit, interrupting dryer operation.

Note: The drum lamp will operate with an open belt switch.

Page 49

Belt Switch

Switch shown in closed position

The belt switch is fastened to the motor base plate with 2 Phillips-head screws. The belt switch is activated by the movement of the idler arm. If the drive belt breaks or comes off the idler pulley, the belt switch opens power to the motor interrupting dryer operation. The drum lamp will operate with an open belt switch.

To remove the belt switch:

1. Remove the motor and blower wheel.

2. Remove the 2 Phillips-head screws that attach the belt switch to the motor base plate.

Page 50

Drum

Drum Baffle Screws

The drum is made of 304 stainless steel and has three replaceable baffles. The drum rotates counterclockwise, as viewed from the front, at a speed of 47 to 51 rpm.

Page 51

Drum

To remove the drum:

1. Remove the drive belt from the motor.

2. Using the belt as a handle, pull the drum forward and guide out of the cabinet.

Page 52

Drum Shaft & Bearing

Drum Shaft

Drum Bearing

“O” Ring

The drum shaft is attached to the rear of the drum with three T-20 Torx screws. The bearing can be removed by pulling it off the shaft. The drum shaft and bearing fit into the bearing retainer in the center of the heater assembly (electric models) or diffuser assembly (gas models). To access the drum shaft and bearing, it is necessary to remove the drum.

Page 53

Drum Bearing Retainer & Ground Strap Assembly

The drum shaft and bearing fit into the bearing retainer in the center of the heater assembly (electric models) or diffuser assembly (gas models). The assembly is held to the back side of the heater housing or diffuser assembly by four screws.

Page 54

Idler Assembly

The idler arm is positioned on the chassis and inserted in a slot in the motor base plate.

The assembly is located to the left of the motor.

To remove the idler assembly:

1. Remove the drum.

WARNING: The idler arm is under high tension. To prevent injury, do not

let the idler arm snap back.

2. Release tension on the idler assembly by unlocking the idler arm from the top right corner of the motor support.

Page 55

Idler Assembly

Slot in Motor Base Plate

3. Remove the idler arm from the slot in the motor base plate.

4. Remove the idler assembly from the dryer.

Page 56

Water Valve

The water inlet valve is located inside the cabinet at the bottom right hand corner. The water valve is

Water Valve / Cover

enclosed under a metal cover. The cover is attached to the dryer with a Phillipshead screw and a tab located at the bottom.

The valve has an approximate resistance value of 406 . Operation of the water inlet valve can be checked by using service test mode T07.

Page 57

Water Valve

To replace the inlet water valve:

1. Remove the drum.

2. Remove the 2 Phillips-head screws that hold the cover to the cabinet and remove the cover by lifting up and out.

Page 58

Water Valve

Water Inlet Hose

Disconnect

John Guest

Connector

Collar

Water Outlet Tubing

Note: In the following steps, capture any residual water that may escape

from the valve, fill hose, and tubing.

3. Disconnect the water inlet hose.

4. Disconnect the coil wiring.

5. Press the John Guest connector collar and remove the water outlet tubing.

Page 59

Motor & Blower Wheel

The motor is a single-speed, dual-shaft, 1/4-hp, 1725-rpm motor with an automatic reset overload protector. The overload protector is an internal component of the motor and cannot be replaced separately. The motor contains a centrifugal switch that serves three purposes: It disengages the motor start winding (6), engages the motor run winding (8), and closes the circuit contacts (1 to 3) for the heat source.

Page 60

Motor & Blower Wheel

Turn nut

Counterclockwise

To remove.

The blower wheel is held to the motor shaft with a 15/16-in. (24-mm) molded nut.

Motor resistance values:

Start winding = 2.3 ohms Run winding = 2.3 ohms

Page 61

Motor & Blower Wheel

Thermostat

Moisture

Shield

To remove the motor:

1. Disconnect power to the unit.

2. Remove the drum. (See Drum.)

3. Remove the Phillips-head screw and the thermostat moisture shield from the front frame.

Page 62

Motor & Blower Wheel

Outlet Control Backup Thermostat

4. Remove the Phillips-head screw and the outlet control backup thermostat from the blower housing.

Page 63

Motor & Blower Wheel

Motor Support

Disconnect

Belt Switch

5. Remove the idler pulley assembly from the motor bracket.

6. Disconnect the motor wire harness.

7. Disconnect the wires attached to the belt switch.

8. Remove the single vertical and single horizontal Phillips-head screws that attach the motor bracket and motor support to the chassis.

Page 64

Motor & Blower Wheel

9. Remove the 2 Phillips-head screws and 2 washers that hold the top of the motor base plate to the blower housing.

Page 65

Motor & Blower Wheel

10. Remove the Phillips-head screw, then disengage the motor moisture shield from the motor bracket.

11. Raise the rear of the motor bracket to clear the tab protruding from the bottom of the chassis. Slide the motor bracket back until the bracket tabs clear the slots in the chassis. Remove the motor and blower wheel assembly from the chassis.

Note: When installing the motor and blower wheel assembly, ensure that

the 2 rear tabs on the motor bracket are inserted into the slots in the motor support, and the 2 front tabs on the motor bracket are inserted into slots provided in the chassis.

Page 66

Motor & Blower Wheel

. M

12. Hold the motor shaft from turning and use a 15/16-in. (24-mm) socket to remove the blower wheel from the motor shaft.

Page 67

Motor & Blower Wheel

13. Compress and remove the rear motor strap from the motor support.

14. Loosen the two 1/4-in. hex-head screws on the front motor strap.

15. Lift and remove the motor from the motor bracket.

Rear Motor Strap

Front Motor Strap

NOTES:

• When installing the motor to the motor bracket, install the motor with the motor harness terminals at the 9:30 o'clock position.

• After installing the motor, ensure both moisture shields are properly installed.

Page 68

Blower Housing

The blower housing is attached to the dryer with 7 screws and 3 tabs.

To remove the blower housing:

1. Remove the motor and blower wheel.

2. Remove the single Phillips-head screw located inside the outlet of the exhaust pipe. Remove the exhaust tube from the blower housing.

Page 69

Blower Housing

Tabs

3. Remove the 7 Phillips-head screws that attach the blower housing to the base plate.

4. Slide the blower housing to the right.

Note: When reinstalling the blower housing, ensure the 3 tabs are inserted

into the front base plate.

Page 70

Heater Assembly

The heater assembly is located behind the drum. It consists of inner and outer open-wire elements, each formed in a zigzag pattern fastened to a single housing. The inner element consists of 2 elements wired in parallel with each. The inner element and the outer element are controlled by separate relays on the control board.

Page 71

Heater Assembly

When energized, the outer element draws approximately 12.5 amps at 240 VAC. The outer element has a resistance value of 19.2 . When energized, the 2 inner elements draw approximately 12.5 amps at 240 VAC. The 2 inner elements have a combined resistance value of 19.2 .

Page 72

Heater Assembly

To access the heater assembly, it is necessary to remove the drum. Lead wires can then be removed from the elements, inlet safety thermostat, inlet control thermistor, and high limit thermostat. The heater assembly is attached to the cabinet with 4 Phillips-head screws.

Page 73

Heater Assembly

Heater is available in the following manners:

512 – Heater & housing asm (includes hi-limit and bearing retainer)

WE11M42

513 – Heater housing

WE11M43

514 – Mica heater asm

WE11M32

Page 74

Heater Assembly

To Remove Mica Heater Assembly:

1. Remove leads from heater assembly.

2. Bend back single metal tab on housing holding heater in place.

Page 75

Heater Assembly

Tab & Gap

3. Rotate mica assembly slightly counterclockwise to align numerous gaps on mica surface with tabs on housing.

4. Lift mica heater assembly from housing.

Page 76

Burner Assembly & Conversion

The burner assembly consists of the gas valve coils, gas valve, burner, and inlet pipe

Burner assembly can be converted to LP gas by installing a WE25X217 Conversion Kit.

Burner assembly can be converted back to natural gas by installing a WE25X218 Conversion Kit.

Page 77

Gas Valve Coils

The burner assembly has a gas valve that utilizes 3 coils. A double coil (safety and booster coils combined) and a single main coil are located on top of the gas valve in front of the combustion chamber opening.

All coils can be replaced separately.

Gas valve coil assembly resistance values:

• Safety coil terminals - 1400 

• Booster coil terminals - 580 

• Main coil terminals - 1300 

Page 78

Valve Coil Replacement

1. Remove the drum.

2. Remove 2 Phillips-head screws from the front frame and the Phillipshead screw from the rear of the gas valve cover.

Page 79

Valve Coil Replacement

3. Disconnect the wire harness from both coils.

4. Note the position of the locator pins inserted in the coil bracket.

5. Remove the 2 Phillips-head screws that attach the coil bracket to the valve body.

6. Lift the bracket vertically. Lift coils to remove.

Note: Upon reassembly, ensure the locator pins are inserted into the

holes

provided in the coil bracket.

Page 80

Gas Valve

The gas valve is attached to a bracket located in the bottom, right, front corner of the dryer cabinet.

To remove the gas valve:

1. Shut off the gas supply to the unit.

2. Disconnect gas supply from the burner inlet pipe.

3. Remove the drum.

4. Remove 2 Phillips-head screws from the front frame and the Phillips-head screw from the rear of the gas valve cover.

Page 81

Gas Valve

5. Disconnect the ignitor wire harness and the 2 wires from the flame detector.

6. Disconnect the coil wire harness from each coil.

7. Remove the 2 Phillips-head screws that attach the gas valve bracket to the dryer floor.

8. Pull the bracket toward the front of the dryer to disengage tabs from dryer floor.

Page 82

Gas Valve

9. Remove the coils from the gas valve.

10. Turn the bracket over. Remove the 3 Phillips head screws that attach the gas valve to the gas valve bracket.

Caution: The ignitor

is very fragile. To prevent breaking the ignitor, care

must be taken when installing the gas valve.

Note: Upon reassembly, ensure the gas valve bracket is inserted under the

2 tabs located in the dryer floor.

Page 83

Ignitor

The ignitor is located at the end of the burner assembly in the combustion chamber opening and has a maximum rating of .4 amps. The ignitor has an approximate resistance value of 300 to 500 .

The ignitor is attached to the gas valve bracket with a Phillips-head screw. To access the ignitor, it is necessary to remove the burner assembly. (See

Gas Valve , steps 1 through 8.)

Page 84

Flame Detector

The flame detector is attached to the right side of the combustion chamber. It is necessary to remove the flame detector moisture shield to remove the flame detector.

To remove the flame detector:

1. Remove the drum.

2. Remove 2 Phillips-head screws from the front frame and the Phillips-head screw from the rear of the gas valve cover.

Page 85

Flame Detector

3. Disconnect the 2 wires from the flame detector.

4. Remove the Phillips-head screw that holds the flame detector to the combustion chamber.

5. Remove the flame detector from the tab at the bottom.

Note: Upon reassembly,

ensure the tab at the bottom of the flame detector is inserted into the slot located on the combustion chamber.

Page 86

Inlet Safety Thermostat

On electric models, the inlet safety thermostat is located on the top left area of the heater housing, to the left of the inlet control thermistor.

On gas models, the inlet safety thermostat is located on the right side of the diffuser, above the inlet control thermistor.

The thermostat monitors incoming air temperature.

Inlet Control

Thermistor

Inlet Safety Thermostat

Electric Model Shown

If the thermostat reaches a temperature beyond its maximum temperature rating, it will trip and disable power to the heating elements (electric models) or burner assembly (gas models).

Page 87

Inlet Safety Thermostat

On electric dryers, the inlet safety thermostat opens at 225°F (7.5cu ft) or 210°F (7.0 cu ft) and will automatically reset at 195°F or 180°F respectfully.

On gas dryers, the inlet safety thermostat opens at 300°F and will automatically reset at 260°F.

To remove the inlet safety thermostat:

1. Remove the drum.

Inlet Safety Thermostat

Electric Model Shown

2. Disconnect the 2 wires from the inlet safety thermostat.

3. Remove the Phillips-head screw that attaches the inlet safety thermostat to the heater assembly or diffuser.

4. Lift and slide the thermostat from the heater assembly or diffuser.

Page 88

Inlet Control Thermistor

On electric models, the inlet control thermistor is located on the top left area of the heater housing, to the right of the inlet safety thermostat.

On gas models, the inlet control thermistor is located on the right side of the diffuser, below the

Inlet Safety Thermostat

Inlet Control

Thermistor

inlet safety thermostat.

Electric Model Shown

The thermistor monitors incoming air temperature and will respond to temperature changes of 3 °F.

The thermistor relays this information to the control board.

The thermistor has a negative coefficient. As the temperature increases, the thermistor's resistance decreases.

Page 89

Inlet Control Thermistor

To remove the inlet control thermistor:

1. Remove the drum.

2. Disconnect the 2 wires from

Inlet Control

Thermistor

the inlet control thermistor.

3. Remove the Phillips-head screw that attaches the inlet control thermistor to the heater assembly or diffuser.

4. Lift and slide the thermistor from the heater assembly or diffuser.

Operation of the inlet control thermistor can be checked by using service test mode T06.

Specific failures associated with the inlet control thermistor can initiate error codes E3 and E4.

Page 90

Outlet Control Thermistor

Shield in Place

Outlet Control

Thermistor

Shield Removed

The outlet control thermistor is located on the lower rear area of the blower housing. It is below the moisture shield and the outlet control backup thermostat. The outlet control thermistor measures outgoing air temperature and will respond to temperature changes of 3°F. The thermistor relays this information to the control board.

Page 91

Outlet Control Thermistor

Operation of the outlet control thermistor can be checked by using service test mode T05.

Specific failures associated with the outlet control thermistor can initiate error codes E5 and E6.

To remove the outlet control thermistor:

1. Remove the drum.

2. Remove the Phillips-head screw and the thermostat moisture shield from the front frame.

3. Disconnect the 2 wires from the outlet control thermistor.

4. Remove the 2 Phillips-head screws that attach the outlet control thermistor to the blower housing.

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Thermistor Characteristics

If the control reads a thermistor value too high or too low then it will log an error code, and switch to a setting where the heaters are on a duty cycle. The dryer then relies on the backup thermostats to control the heater.

Dryer goes into this fall back mode when it has determined that it can no longer rely on thermistor temperature to control applied heat. This can occurs when a thermistor cannot sense heat (failed open) or always read hot (failed closed).

The fall back mode consist of reducing the maximum heating power (typically 50%) so that thermostats are fast enough to shut down heater in case of overheating. On these GE Model Dryers, both heaters are cycled ON and OFF every minute.

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Outlet Control Backup Thermostat

Outlet Control

Backup Thermostat

Shield in Place

Shield Removed

The outlet control backup thermostat is located on the upper, rear area of the blower housing. It is below the moisture shield and above the outlet control thermistor. The outlet control backup thermostat monitors the outgoing air temperature. If the thermostat reaches a temperature beyond its maximum temperature rating, it will trip and disable power to the heating elements or burner assembly.

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Outlet Control Backup Thermostat

The outlet control backup thermostat opens at 165°F and will automatically reset at 155°F.

To remove the outlet control backup thermostat:

1. Remove the drum.

2. Remove the Phillips-head screw and the thermostat moisture shield from the front frame.

3. Disconnect the 2 wires from the outlet control backup thermostat.

4. Remove the Phillips-head screw that attaches the outlet control backup thermostat to the blower housing.

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High Limit Thermostat

On electric models, the high limit thermostat is located on the top right area of the heater housing.

On gas models, the high limit thermostat is located on the upper right side of the diffuser.

High Limit

Thermostat

The high limit thermostat monitors incoming air temperature.

If the high limit thermostat trips it will take out the L1 circuit to the motor which, in turn, will disable the heat source.

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High Limit Thermostat

For both the electric and gas models, the high limit thermostat opens at 315°F and will automatically reset at 250°F.

To remove the high limit thermostat:

1. Remove the drum.

2. Disconnect the 2 wires from the high limit thermostat.

3. Remove the Phillips-head screw that attaches the high limit thermostat to the heater assembly or diffuser.

4. Slide the thermostat from the heater assembly or diffuser.

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Service Mode Test

How to enter to service mode and navigate:

From idle state, press and alternate between the “My cycle” and “Delay Start” buttons twice to enter service mode.

Upon entering the service mode, the Control shall be in test selection mode and display the first test number (t01). Rotating the knob counter clockwise (CCW) shall decrement the test number in the display. Rotating the knob clockwise (CW) shall increment the test numbers in the display.

Once the test number is selected, pressing [Start/Pause] shall begin the selected test.

During a test, pressing power button shall terminate that test and bring the control to the test selection mode (test number is displayed on the display).

Pressing Power key during the test selection mode shall exit the Service mode.

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Service Mode Test Sequences

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Service Mode Test Sequences

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Error Codes

100