GE GDWT668V How to use

GE Appliances
General Electric Company
Louisville, Kentucky 40225
31-9221
Top-Control Stainless
Steel Tub Dishwashers
Technical Service Guide
September 2011
GE Appliances
GDWT668V
GDWT768V
PDWT180V
PDWT380V
PDWT560V
PDWT565V
CDWT280V
CDWT980V
ZBD6920V
ZBD7920V
ZBD8920V

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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 Appliances
Copyright © 2011
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
Active Vent...........................................................................................................................................................................26
Bottom Door Seal..............................................................................................................................................................27
Center Wash Arm.............................................................................................................................................................28
Coarse Filter........................................................................................................................................................................30
Component Locator Views...........................................................................................................................................13
Control Board......................................................................................................................................................................22
Control Board Connector Locator View.................................................................................................................16
Control Features................................................................................................................................................................ 7
Control Thermal Cutout (TCO)......................................................................................................................................22
Consumer Purge of the Bulk Dispenser Tank......................................................................................................21
Cycle Chart..........................................................................................................................................................................12
Cycles.....................................................................................................................................................................................11
Detergent/Rinse Module................................................................................................................................................24
Dishwasher Components..............................................................................................................................................17
Door Handle........................................................................................................................................................................24
Door Switch Assembly...................................................................................................................................................24
Drain Pump Assembly....................................................................................................................................................35
Factory Test Mode............................................................................................................................................................39
Fill Funnel..............................................................................................................................................................................33
Fine Filter..............................................................................................................................................................................29
Float Switch.........................................................................................................................................................................31
Heating Element................................................................................................................................................................32
Inner Door Panel...............................................................................................................................................................26
Introduction......................................................................................................................................................................... 6
Lens.........................................................................................................................................................................................23
Lower Wash Arm..............................................................................................................................................................28
Motor Pump Assembly...................................................................................................................................................35
Nomenclature.................................................................................................................................................................... 5
Outer Door Panel..............................................................................................................................................................17
Schematics and Wiring Diagrams............................................................................................................................40
Service Mode......................................................................................................................................................................37
(Continued next page)

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SmartDispenseTM...............................................................................................................................................................18
Sump Filter...........................................................................................................................................................................29
Tactile Switch......................................................................................................................................................................23
Troubleshooting ...............................................................................................................................................................37
Tub Gasket...........................................................................................................................................................................27
Tub Thermal Cutout (TCO).............................................................................................................................................36
Turbidity Sensor................................................................................................................................................................31
Upper Wash Arm..............................................................................................................................................................28
Vent Fan................................................................................................................................................................................25
Warranty..............................................................................................................................................................................41
Water Hardness Test and Calibration.....................................................................................................................17
Water Inlet Valve...............................................................................................................................................................33

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Feature Pack
G D W T 6 6 8 V B B
Product Type
GDW = GE Long Door
PDW = Profile
CDW = GE Café
Exterior Color
BB = Black
CC = Bisque
SS = Stainless Steel
WW = White
Model Year Designator
Model Number
The nomenclature plate is located on
the left side of the tub wall, inside the
door jamb.
The mini-manual is located behind
the access panel.
Nomenclature
Nomenclature
Handle/Control Location
0 = Latch/Front Control
6 = Recessed/Top Control
8 = Towel Bar/Top Control
Door
8 = Stainless Door
Top Control
T = Top Control
Serial Number
The first two characters of the serial number
identify the month and year of manufacture.
Example: VV123456S = November, 2011
V- NOV
Z - DEC
A - JAN
B - FEB
F - MAR
G - APR
H - MAY
L - JUN
M - JUL
R - AUG
S - SEP
T - OCT
2011 - V
2010 - T
2009 - S
2008 - R
2007 - M
2006 - L
2005 - H
2004 - G
2003 - F
2002 - D
2001 - A
2000 - Z
The letter designating
the year repeats every
12 years.
Example:
V - 2011
V - 1999
V - 1987
Access Panel

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New Features and Benefits
• Five-stage filtration with Piranha™ hard food disposer
• Dedicated silverware jets
• Steam PreWash
• Fan assist dry with heated option and ActiveVent
• Fifty-two dBA sound level
• ENERGY STAR® qualified and CEE Tier II rated
• SmartDispense™ (only on models GDWT7XX, PDWT3XX, PDWT5XX, CDWT980, and ZBD89XX)
Weights and Dimensions
Approximate Shipping Weight.........................................................................................................................................115 lb
Net Weight.................................................................................................................................................................................110 lb
Overall Height..........................................................................................................................................................................34 in.
Height with Legs Extended................................................................................................................................................35 in.
Overall Depth...........................................................................................................................................................................243/4in.
Overall Width............................................................................................................................................................................24 in.
Introduction

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Throughout this manual, features and appearance may vary from your model.
Control Features
(Continued next page)
6
Control Settings
Status Indicator Lights (Indicators vary by models)
The Status display tells you what is happening while the dishwasher is in operation and may flash, indicating
a malfunction. The lights will come ON indicating the sequence of the dishwasher operation.
LOW DETERGENT Displayed when the SmartDispenseTM needs to be refilled with liquid or gel automatic
dishwasher detergent.
NOTE: If you are not using SmartDispenseTM and you want to turn the LOW DETERGENT
LED light off, press the ADDED HEAT button 5 times within 3 seconds. You will hear 3
beeps; then the light will go off. You can turn the light back on by pressing theADDED
HEAT button 5 times within 3 seconds.
SENSING Displayed while the Clean SensorTM is measuring the amount of soil and temperature
of water. The dishwasher will adjust the selected cycle to achieve optimal performance.
SANITIZED Displayed at the end of the cycle when SANITIZE has been selected and the dishwasher
has met the requirements for sanitization. See SANITIZE, below, for complete cycle
description. Opening the door or pressing any key while the door is closed and latched
will turn off the light.
CLEAN Displayed when a wash cycle is complete. Refer to Item 6, page 9, for further
explanation of clean light operation
CYCLE STATUS The cycle status indicator light is located on the right side of the dishwasher, above the
INDICATOR handle. This light comes on as amber while the selected cycle is running. The light turns
to green when the selected cycle is complete. The light stays ON as green as a reminder
that the dishes are clean until the door is opened or until another cycle is selected.
Time Remaining Display (on some models)
During operation, the display shows the minutes remaining until the cycle is complete. The display may
adjust the remaining time while the Sensing light is on. The time displayed at the start of each cycle may
change from the factory setting as the unit customizes itself to home use. During a delay start, the display
will show hours of time remaining until the cycle starts.
NOTE: This dishwasher is equipped with CleanSensorTM with automatic temperature control; therefore,
cycle length and time may vary depending on soil and water temperature conditions.
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1
Top-Control Dishwashers
5
6
2
4
3
1
Cycle Status Indicator Light

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The STEAM option will use the heater to
increase the temperature of the water. The circulation pump will turn off
periodicall , allowing water to drip onto the hot calrod which will create steam.

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