GE Monogram ZBD6800K Technical Service Manual Download Page 25

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WARNING:

Disconnect electrical power before servicing.

Caution

: Label all wires prior to disconnection. Wiring errors can cause improper and dangerous

operation. Verify operation after servicing.

Schematic

K
E
Y
P
A
D

CONTROL CIRCUIT BOARD

3-DIGIT DISPLAY

ACTIVE

VENT

MOTOR

KEYPAD

1 2 3 4 5 6 7 8 9 10

1 2 3

1 2 3 4 5 6 7 8 9

1
2

ACTIVE

VENT

3-DIGIT DISPLAY

PQA

J10

POWER SWITCHING

2
3
4

TURBIDITY/

TEMPERATURE

SENSOR

---THIS CIRCUIT NOT IN

ALL MODELS

POWER
SUPPLY

2
3
4

NTC

RECEIVER EMITTER

TRANSMITTER
CATHODE

Vcc

NX
SX
OX

COM

DOOR

INTERLOCK

DETERGENT MODULE

FAN

CIRCULATION

PUMP

FLOOD

SWITCH

WATER VALVE

725-1200

HEATING ELEMENT

DRAIN PUMP

1200-2800

COLOR CODE

LETTERS

COLOR

LETTERS

COLOR

THE "X" INDICATES ONE SOLID COLOR- NO
TRACER. WIRES WITH TRACER SHOW
BOTH COLORS. EXAMPLE -WR IS WHITE
WITH RED TRACER.

AX
BX
CX
NX
OX
PX

LT. BLUE
BLACK
BROWN
DK. BLUE
ORANGE
PINK

RX
SX
TX
VX
WX
YX

RED
GRAY
TAN
PURPLE
WHITE
YELLOW

Summary of Contents for Monogram ZBD6800K

Page 1: ...PUB 31 9116 03 04 MODEL SERIES TECHNICAL SERVICE GUIDE Top Control Monogram Dishwashers ZBD6800K ZBD6880K ZBD6890K GE Consumer Industrial ...

Page 2: ... 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 an...

Page 3: ...Factory Test Mode 22 Fan 20 Fill Funnel 11 Heating Element 13 Lower Spray Arm Fine Filter and Inlet Cover 11 Main Conduit 11 Membrane Keypad 17 Middle Spray Arm 10 Nomenclature 4 Schematic 25 Service Mode 21 Strip Circuits 24 Transorb 16 Troubleshooting 23 Turbidity Sensor 14 Upper Spray Arm 11 Using the Dishwasher with the Upper Rack Removed 10 Warranty 26 Wash Cycles 12 Water Valve and Flood Swi...

Page 4: ...e ﬁrst two characters of the serial number identify the month and year of manufacture Example AG123456S January 2004 A JAN 2005 H D FEB 2004 G F MAR 2003 F G APR 2002 D H MAY 2001 A L JUN 2000 Z M JUL 1999 V R AUG 1998 T S SEP 1997 S T OCT 1996 R V NOV 1995 M Z DEC 1994 L Note The service information sheet is located under the control panel Serial Number The model number and serial number are loca...

Page 5: ...In these cases the sanitized light will not illuminate at the end of the cycle NOTE NSF certified residential dishwashers are not intended for licensed food establishments COOKWARE Heavy 11 4 gallons 95 minutes Medium 10 0 gallons 71 minutes Light 10 0 gallons 66 minutes This cycle is meant for heavily soiled dishes or cookware with dried on or baked on soils This cycle may not remove burned on fo...

Page 6: ...cel delay hours 3 ADDED HEAT When selected the cycle will run longer with heating elements on to improve both wash and dry performance NOTE Cannot be selected with RINSE ONLY cycle 4 PRE WASH For use with heavily soilded and or dried on baked on soils This option on some models MUST be selected PRIOR to starting the cycle This option adds 16 minutes to the cycle time NOTE Cannot be selected with R...

Page 7: ...lways display your last selection and enhancements If you don t want to change the settings simply press the START RESET pad to ready the dishwasher and close the door to begin the cycle NOTE If the START RESET light is flashing the cycle has been interrupted by pressing the START RESET pad Light will quit flashing after the dishwasher automatically drains out the water Also if a power failure occ...

Page 8: ...p Motor Junction Box Control Module Flood Switch Detergent Rinse Module Vent Fan Assembly Door Interlock Switch 5 Filter Screen 6 Heating Element 7 Float 8 Inlet Cover 7 4 6 5 8 Vent Louver Motor Wire Harness Loom Note The wire harness loom is used to help the wire harness make the transition over the tub trough lip Make certain loom and wires are replaced correctly to prevent wires from being pin...

Page 9: ...View Front of Dishwasher Rear of Dishwasher Water Valve Fill Hose Drain Tube Assembly Drain Line Check Valve Junction Box Sump Drain Pump Drain Line Circulation Pump Motor Turbidity Sensor Transorb Flood Switch Check Valve Heating Element ...

Page 10: ...y arm screw and bottom of the middle arm Components Note If the upper rack experiences poor cleaning problems ensure the middle spray wash arm is turning freely If not disassemble the middle spray wash arm and clean the bearing surface then reassemble Using the Dishwasher with the Upper Rack Removed 1 Unsnap and remove the end cap on each side of the rails 2 Pull the rack straight out and off the ...

Page 11: ...her foreign matter Also check the spray arm for rotation To remove the upper spray wash arm remove the upper basket See Middle Spray Wash Arm then remove the screw and upper spray wash arm Lower Spray Arm Fine Filter and Inlet Cover Check the holes in the spray arm for bits of china seeds and other foreign matter Also check the spray arm for rotation If soil is present clean ﬁne ﬁlter screen The l...

Page 12: ...xtremely important that the self tapping grounding screw is tightened securely when reinstalling the circulation pump Ground Screw Circulation Pump and Motor Strip Circuit MIN MAX MIN MAX HEATED DRY W O HEATED DRY Normal Wash 3 1 3 32 88 1302 1502 38 120 240 Speed Wash 3 1 2 19 26 1253 1503 8 120 240 Glasses 3 1 3 26 39 1103 1303 30 120 240 China Crystal 3 1 3 30 52 1103 1303 30 120 240 Pots Pans ...

Page 13: ...e problem is that the dishes are not drying correctly don t overlook the rinse agent A rinse agent will improve the water sheeting action and drying performance It is normal for the stainless steel tub and the inner door panel to retain water droplets even though the dishes are dry The heating element nuts are located on the underside of the washer near the back Ample force is required to remove t...

Page 14: ...t the turbidity sensor circuit The turbidity sensor circuit contains the control module wiring and the turbidity sensor The turbidity sensor measures the amount of suspended particles in the wash water in the sump The control sends the turbidity sensor a pulse width modulated 5 volt signal for calibration and usage during operation The control then receives an analog signal of the sensed turbidity...

Page 15: ...r to dishwasher before servicing water valve and ﬂood switch The water valve is secured to the frame by 2 hex head screws Photo is shown with ﬂood switch removed Water Valve Flood Switch Drain System The drain system consists of the following components Auxiliary drain pump includes motor and one way check valve Drain tube Check valve in line with drain tube Drain hose The inlet cover prevents lar...

Page 16: ...ient absorber transorb in the water valve circuit The transorb absorbs electrical transients created when the water valve is turned off It is wired in the harness between the line and the neutral side of the water valve circuit If the transorb fails it may create a short circuit that would cause the circuit breaker to trip when the water valve is activated To check the transorb disconnect power to...

Page 17: ...terlock switch The outer door panel is held in place by 12 screws 5 Phillips head screws per side and two 1 4 in hex head screws at the bottom Note Ribbon cable s connect the keypad membrane 3 digit display on some models to the control circuit board Due to the ribbon length care must be taken when removing the door panel to ensure that the ribbon cable s are not damaged Note When troubleshooting ...

Page 18: ...ace by a single screw that secures the module to the right side of the inner door panel The screw is located on the outside of the inner door panel Screw J1 J2 J3 J7 J5 J8 J1 Door Interlock Switch J2 Heating Element Circulation Pump Drain Pump Fan Water Valve Detergent Module J3 Turbidity Sensor J5 Vent Louver Motor J7 Membrane keypad ribbon cable connector J8 LED ribbon cable connector for 3 digi...

Page 19: ...ted 2 times during a wash cycle Detergent is dispensed at the beginning of the main wash cycle and rinse agent at the beginning of the ﬁnal rinse The detergent rinse module can be activated using Service Mode The ﬁrst time the module is activated The lever slides up the right hand path of the connecting rod 1 This action releases the detergent cover 1 2 3 Bracket Bracket Door Interlock Switch The ...

Page 20: ...emove the motor from the mount by rotating the motor 90 in the mount and sliding it out between the tabs Note The gear in the mount is held in place with the motor Vent Motor Strip Circuit Note Foam with double sided tape holds the conduit in place The foam tears easily if pulled during removal of the housing Six Phillips head screws hold the fan and motor to the vent housing Note This also applie...

Page 21: ...y keypads simultaneously for 3 seconds All LEDs light for 3 seconds when service mode is entered To exit service mode press the START RESET at any time PAD Description Notes 1L Activates Deactivates Heater and Fan Test times out after 6 minutes 2L Activates Deactivates Water Valve Operates until ﬂood switch opens 3L Activates Deactivates Detergent Cup Clean LED ON Can take up to 40 seconds for det...

Page 22: ...nergizes for 60 seconds 4 Main pump is energized Water valve continues ﬁlling for an additional 10 seconds 5 Heater is energized and main pump continues to run for an additional 60 seconds 6 Dishwasher pauses for 40 seconds During this time the turbidity sensor control module board and membrane keypad are being calibrated a The control module will beep continuously and the lock icon LED will light...

Page 23: ... board Remove and reseat the 3 digit display connector Does the display work Replace the 3 digit display Does the display work No Replace the control circuit board No Disconnect power to the dishwasher Access the control circuit board Remove and reseat the keypad connector Does the keypad work or activate correct cycles Test the keypad Does the keypad work Replace the control Run Factory Calibrati...

Page 24: ...E DOOR INTERLOCK J2 2 PX FLOOD SWITCH WATER VALVE WX 725 1200 C NO PUMP MOTOR J2 1 M CIRCULATION PUMP WX NX 10 HEATING ELEMENT J2 3 J2 4 VX VX WX HEATING ELEMENT FAN J2 7 M NR WX DRAIN PUMP J2 5 M RX WX J2 6 DETERGENT MODULE RY WX 1200 2800 DETERGENT MODULE DRAIN PUMP FAN YX 16 65 VENT MOTOR J5 2 J5 1 M RX BX 17 ...

Page 25: ...RBIDITY TEMPERATURE SENSOR J3 THIS CIRCUIT NOT IN ALL MODELS J1 POWER SUPPLY 1 2 3 4 NTC RECEIVER EMITTER TRANSMITTER CATHODE Vcc GY NX SX OX M M BW NO COM BX DOOR INTERLOCK WX DETERGENT MODULE FAN RY NR WX WX WX WX WX NX WX CIRCULATION PUMP GY N L1 WX BX PX YX FLOOD SWITCH C NO WATER VALVE 725 1200 VX HEATING ELEMENT RX DRAIN PUMP 1200 2800 G 10 COLOR CODE LETTERS COLOR LETTERS COLOR THE X INDICA...

Page 26: ... because you must pay to ship the product to the service shop or for the service technician s travel cost to your home All warranty service will be provided by our Factory Service Centers or by our authorized Customer Care servicers during normal working hours Should your appliance need service during warranty period or beyond in the U S A call 800 444 1845 In Canada 888 880 3030 WHAT IS COVERED F...

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