Fffsstopcontrol GE DW.pdf.CDWT280V

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New Top Control Door Design Platform



2Presenter and Event

8/2/2011



3Presenter and Event

8/2/2011



Copyright 2010 4

IMPORTANT SAFETY NOTICE

The information in this presentation is intended for use by individualspossessing adequate backgrounds of electrical, electronic, & mechanicalexperience. Any attempt to repair a major appliance may result inpersonal injury & property damage. The manufacturer or seller cannot beresponsible for the interpretation of this information, nor can it assumeany 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, disconnectthe power immediately after performing the necessary checks.

RECONNECT ALL GROUNDING DEVICES

If grounding wires, screws, straps, clips, nuts, or washers used to completea path to ground are removed for service, they must be returned to theiroriginal position & properly fastened.



Dyneema ® CutResistant Glove

Safety Glasses must be

ANSI Z87.1-2003 compliant

Prescription Safety Glasses

Plano Type Safety Glasses

Steel Toe Work

Boot

Electrically Rated Glove

and Dyneema ® CutResistant Glove Keeper

Brazing Glasses

GE Factory Service Employees are required to use safety glasses with

side shields, safety gloves & steel toe shoes for all repairs



6

Presenter and Event8/2/2011

Monogram Cafe

Profile GE



7 /

GE Title or job number /8/2/2011

New Look Control Designs - GE

LED indicatorsPlastic tactile buttons

with painted metallic

finish

NOTE: Graphics/Text on top controls are not on the

top layer of surface to prevent being exposed to the

environment.



8 /


New Look Control Designs - Profile

White “SSD”

(Seven segment display)White LED’s

Chrome tactile buttons.

White LED’s only visible

when illuminated



9 /


New Look Control Designs - Cafe

Plastic tactile buttonswith painted metallic

finish

Note Blue LED’s Text



10 /


New Look Control Designs - Monogram

Silk screen text Chrome collar White SSD

Plastic tactile with

chrome finish and white

LED indicator



11 /


Features

1) Steam is available as an option in almost every cycle, except rinse, which is only

on one or 2 upper end models.

2) When steam is selected the 2 extra wash segments will be added, typically afterthe first 2 fills, so the third fill(segment) would start the Steam option. The first

segment of steam will increase the temperature of the water by use of the heater,

in the second segment of the steam option the heater will remain on and the

circulation pump will turn off partially through to allow water to drop onto the hot

calrod and create steam. (Adds 26 minutes to cycle)

The added heat option differs for the various

cycles. Some cycles will not be modified

while, some will increase calrod on time in

main wash and final rinse, while other cycles

will get additional segments added, ie Auto

w/o added heat has 6 segments and with

added heat has 9 segments



12 /


Features - Cycles

The auto cycle and normal cycle both utilize the turbidity sensor to adjust the wash

parameters of different segments. Normal cycle has the ability to skip segments

where as Auto cycle is a little more rigid structure and modifies main wash length.

Normal cycle time : 68 – 94 minutesAuto cycle time: 62 – 90 minutes

Normal & Auto cycles w/Added Heat : 106 – 116 minutes

Sanitize cycle : 51- 132 minutes.

Deep Clean : 119 – 174 minutes

Plastics: 87-154 minutes

Pots n Pans: 81-140 minutes

Light cycle time : 38 68 minutes

*NOTE: Fill: 16 sec. - 65 sec. Drain: 7 sec. – 105 sec. (Final Rinse) Dry: 8 min.

(Speed cycle) up to 60 min. (Plastic Cycle)

* Times Vary based on cycle, turbidity, temperature.



13 /


(Illustration- Not actual product)

Bi-colored LED

LED amber during cycle

LED green when cycle is finished

Front LED indicator



14 /


Lower rack - roller

Lower rack roller wheel

Cross section of door liner

New geometry of lower wheel provides a tighter fit to door liner

for better rack stability



15 /


Lower rack - roller

Roller locks onto rackSpread roller tabs outward



16 /


Upper rack - slide

Upper rack extended outward Front view with rack pushed in.

NOTE: Removing front end caps

will not release rack



17 /


Upper rack - slide

To remove upper rack assembly, press “down” to disengage lever on left sideand “up” on the right side.

(Right side)

Pull rack assembly forward and out



18 /


Upper rack - slide

Tracks are “riveted” in place and not replaceable

(View from outside of tub)



19 /


Upper rack - slide

Spread retainer clips outward Slide basket rearward out of retainers



20 /


Upper rack - slide

Pry end cap out of slide

With the end cap removed, take

care when sliding bearing track

out as bearings will fall loose.



21 /


Upper rack - shower

1. With rack upside down,

remove ¼ hex head screw

2. Remove other ¼ hex head

3. Lift funnel off

4. Release support bracket

in rear.

1

2

34

l h



22 /


Float Switch Dome

Float dome is removed by

releasing locking tabs by

squeezing or with small

screwdriver and lifting up.

Float is accessed and can be lifted

off.

h l



23 /


Lower Shower & Filter

• Gently lift and rotate lower

spray arm counterclockwise

to remove.

• Rotate hub nut

counterclockwise to remove.• Remove fine filter by lifting up.



24 /


Sump Cover

Shower tube sets in a clip

mounted to the center rear

of the tub.

Lift sump inlet cover

straight off to gain

access to debris in sump

S Fil & C



25 /


Sump Filter & Cover

• To remove or replace the

coarse filter located in the

floor of the tub, you must

remove the sump filter

basket.

• Use flat bladed screwdriver or

putty knoife to release sump

filter tabs on each side.

•

Lift straight up and out.• Coarse filter then lifts off.

Sump filter is secured

to retainer ring as notedin photo.

NOTE: (Sump removed

for better view)

S



26 /


Sump

Sump mounted to tub with

clamp on top.

Sump filter retainer is

loose when sump isremoved

T bidit S / Th i t



27 /


Turbidity Sensor: measures the

amount of suspended particles in

the wash water by transmitting light

and measuring the quantity of that

light.

Note: “Turbidity” is defined as the

amount of suspended particles

suspended in a fluid.

Turbidity Sensor / Thermistor

Turbidity Sensor held in place with clamp.

Note key slot for correctly positioning in sump

T bidit S C lib ti



28 /


Turbidity Sensor - Calibration

Failure of the turbidity sensor will result in maximum wash/rinse cycles.

When a main control board is replaced, it

will automatically start a “factory test

mode” During that cycle, the turbidity

sensor will be calibrated.

If a turbidity sensor is replaced w/o

replacing a control, the turbidity sensor

can be calibrated by doing the following:

1. Open the door and press the

Start/Reset pad 100 times.

2. That will flag the board to calibrate thesensor during the next full dishwasher

cycle.



Copyright General Electric 2010

Testing the Control Circuit

When the control is checking the turbidity of the water, a pulsed 5 volt DC

signal is sent to the emitter. If you check the DC voltage at the control or

turbidity sensor you will see a fluctuating DC voltage of approximately 2volts DC.



Copyright General Electric 2010

Testing the Thermistor Circuit

The thermistor’s resistance has a negative

temperature coefficient. (NTC)

At 75º F, the resistance is approximately 9.9KΩ

At 140º F, the resistance is approximately 2.8KΩ

D i P



31 /


Drain Pump

Drain pump secured to sump with clamp

Drain pump has a “check valve” atboth inlet and outlet ports.

Final drain time appx 105 seconds.

D i P



32 /


Drain Pump

Check valve removed by

simply pulling forwardOutlet check valve

Motor Assembly



33 /


Motor Assembly

Motor/pump assembly mountedwith hanger facing front and

connected to sump with clamp

(Viewed from underneath with dishwasher on its back)

Motor Assembly



34 /


10

F Start capacitor

Mounted with 1 screw

Motor Assembly

Heater



35 /


Heater

Heating Element connections

in rear of machine

16 resistance value

Tub Thermostat



36 /


Tub Thermostat

Heat Shrink

Thermostat Opens at 165 F

Resets at 150 F

Thermostat located in the front behind

the toe kick panel and access panel

Remove ¼ hex head screws

Replacement part

Door



37 /


Door

Outer Door Panel



38 /


Outer Door Panel

To remove outer door panel, remove the two ¼

hex heads screws located in both lower corners

(View from underneath)

Outer Door Panel



39 /


Outer Door Panel

Remove (10) T15 torx screws from around inner door panel.

NOTE: (different length with screws. 4 long/6 short)

New Look Inner Door Panel



40 /


New Look Inner Door Panel

Outer Door Panel



41 /


Outer Door Panel

• HMI control is mounted to outer doorpanel

• Remove Phillips head screw and

remove metal shield to access

Outer Door Panel



42 /


Outer Door Panel

•

Disconnect harness from control• Disconnect “Model Select Plug” (re-use)

• Remove single Phillips head screw

Model Select Plug is a resistor that

the control will read through the

harness from the HMI or UI that it is

plugged in to.

If the model select plug is not

installed, the control will produce a

constant and loud continuous

tone.

Outer Door Panel



43 /


Outer Door Panel

Lift top control housing straight up and out of the outer door panel.

H M I Control



44 /


Remove 2 Phillips head screws for HMI control

H.M.I. Control

H M I Control



45 /


Push buttons and rubber inlay are replaced individually as shown.

(Buttons are “keyed” to prevent misplacement)

H.M.I. Control

Handle Removal



46 /


Handle Removal

Left Side – Remove ¼ hex head screw

Note: HMI board must be removed to access screw on left

Right Side – Remove ¼ hex head screw

Outer Door Panel – Handle Removal



47 /


Outer Door Panel – Handle Removal

Full length view

Indicator Lens



48 /


Indicator Lens

The lens is replaced by prying the square retaining clip off the back side.

Front right side

Door Components



49 /


Door Components

Detergent/Rinse

Aid dispenser

Door Lock Switch

Main control

Vent Fan

TCO

Door Switch



50 /


Door Switch

Door switch is

held in place with

3 Phillips head

screws

L1N

Door Switch - Strike



51 /GE Title or job number /

8/2/2011

Door Switch Strike

3 screws removed

Door Switch removed

Door strike held in

place with single

T15 screw

Remove screw

and slide strike

assembly

forward and out

NOTE: No

adjustment

Over-Temperature TCO




8/2/2011

Over Temperature TCO

• TCO is held in place with a single T15 torx screw.

• One Shot - Opens at 250 F

•Breaks L1

L1

N

Active Vent




8/2/2011

Active Vent

• Held in place with 1 screw

• Slides to right off vent flap

• 103

• 12VDC• CW- closes vent

• CCW – opens vent

Vent Fan




8/2/2011

Vent Fan

Remove 4 Phillips head screws

Pull vent housing and fan straight out

Vent Fan




8/2/2011

Vent Fan

Fan runs at end of dry cycle

whether Heated dry is selected or

not. However, the time varies.

Fan will run as little as 1 minute

or up to 15 minutes w/o heated

dry.

Fan could be on for 30- 50

minutes in some heated dry

cycles.

Detergent/Rinse aid module




8/2/2011

Detergent/Rinse aid module

Remove 6 screws to replace detergent/rinse aid module

Can be cycled and tested in “service mode”

Inner Door




8/2/2011

Inner oor

• Door cable connects to hinge on both sides

• Roller held in place with single screwDoor tension adjustments are made at

end of cable wire or frame support

Inner Door - Removal




8/2/2011

• Remove 4 Phillips head screws. 2- each side

• Lift off while noting any wiring

Inner Door - Hinge




8/2/2011

g

• Door panels removed

• Ensure that door cable is disconnected

• Remove single T25 torx screw.

Complete Door Removal




8/2/2011

p

If a situation required, the entire door assembly could be removed from

dishwasher by removing the single T25 torx screw and cable on each side.

NOTE: Components mounted to door and associated wiring

Bottom Door Gasket




8/2/2011

The door gasket is riveted to the bottom of the inner door panel.Replace inner door to replace door gasket

Tub Gasket




8/2/2011

•

Tub gasket pulls away from channel onlip of tub.

• Held in place at the corners with the

use of a wire rod that provides tension

Lower Access Panel




8/2/2011

Two ¼ hex head screws secure access panel to front frame

(View with outer door panel in place) (Outer door panel removed for better view)

Mini Manual Location




8/2/2011

Mini Manual located behind access panel on left front side

Water Valve–

Float Switch




8/2/2011

Water valve located on left front of unit

Secured with two hex head screws

Float Switch located on left front

Mounted with two hex head screws

Fill Funnel




8/2/2011

Fill funnel mounted on left rear corner of tub

Inside cap unscrews to release funnel from tub

Main Control




8/2/2011

TCO

Power SupplyActive Vent

Turbidity/NTCKeypad

J5 J1

J2

J3J7

Power Switching

Component Connections

Testing–

(Example: Heating Element)




8/2/2011

Testing of major components can be accomplished with the neutral pin and each

individual component as noted in the picture. (Heating element test)

Main Control - Removal




8/2/2011

• Remove single Phillips head screw located on inner door panel

• Swing control out to the left and lift out of support openings

Factory Test Mode




8/2/2011

Initiates automatically upon installation of a new main control.

1) All LED’s lit - 10 seconds2) Close door

3) Vent opens/ fan activated 5 seconds /vent close – 15 seconds

4) Detergent module/Water valve energized - 45-65 seconds

depending on model

5) Main pump energized - 55 seconds

6) Turbidity sensor calibrated and other checks - 90 seconds

7) Drain pump energized – 75 seconds8) When 2nd fill starts, exit test mode by pressing “Start/Reset”.

(In some cases it may be necessary to unplug unit to exit test mode)

Appx.

5 min

NOTE: If left in factory test mode dishwasher could run for up to 75 minutes before exiting

Service Mode




8/2/2011

Enter service mode:

Press and hold

“Select Cycle” and “Heated

Dry” for 3 seconds.

Note: Unplugging unit is

not necessary.

All LED’s are lit forapproximately 3 seconds

and the vent closes to

indicate service mode was

successfully entered.

Exit service mode:

Press “Start/Reset” at anytime.

Door must be

in closed

position for

components to

operate.

Hold simultaneously for 3 sec.

Fffsstopcontrol GE DW.pdf.CDWT280V

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