GE Monogram ZBD1800K Series Technical Service Manual Download Page 29 | Manualshive

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Troubleshooting

WARNING: Always turn off the electric power
supply before servicing any electrical component,
making ohmmeter checks, or replacing any parts.

Note: All voltage checks should be made with a
voltmeter having a full-scale range of 130 volts or
higher. After service is completed, be sure all
safety grounding circuits are complete, all
electrical connections are secure, and all access
panels are in place.

Troubleshooting the Door Switch

The door switch can be tested using an
ohmmeter and the strip circuit.

1. Disconnect the electric supply from the

dishwasher.

2. Remove the wire leads from the door switch.

3. Use an ohmmeter to check the door switch for

continuity.

4. If the door switch is defective, remove it from

the latch assembly. If the door switch is good,
check to see if the timer is defective.

Door Switch Strip Circuit

SWITCH

PRESSURE

OPTIONAL

SWITCH

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Summary of Contents for Monogram ZBD1800K Series

Page 1: ... 1 MODEL SERIES ZBD1800K Monogram 18 In Built In Compact Dishwasher GE Consumer Industrial TECHNICAL SERVICE GUIDE PUB 31 9123 7 04 ...

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: ...ent 20 Illustrated Parts Catalog 40 Introduction 4 Motor Pump Assembly 25 Nomenclature 5 Pressure Switch 23 Schematic 39 Side Panels 16 Specifications 4 Static Dry System 13 Sump Assembly 27 Timer 10 Troubleshooting 29 Troubleshooting Checklist 34 Troubleshooting the Door Switch 29 Troubleshooting the Heating Element 30 Troubleshooting the Timer 31 Troubleshooting the Wash Pump Motor 32 Troublesho...

Page 4: ...5 5 Amps Motor HP 1 5 Motor Amps 1 10 Heater Wattage Wash Dry 465 10 Total Amps Load Rated 5 10 Component Resistance OHMS Timer Motor 1460 10 Heating Element 31 5 Pump Motor Windings Drain Wash Blue to Red 27 10 47 10 Run Windings Main Blue to Black 22 10 Water Valve Solenoid 1140 5 Total Amps Load Rated 5 10 Water Supply Suggested Minimum Incoming Water Temperature 120 F to 150 F 49 C to 66 C Sum...

Page 5: ...r Engineering Model Suffix Nomenclature Model Number The serial plate of your dishwasher is located on the tub wall just outside the door The service information sheet is located under the control panel Serial Number The first two characters of the serial number identify the month and year of manufacture Example AG123456S January 2001 A JAN 2005 H D FEB 2004 G F MAR 2003 F G APR 2002 D H MAY 2001 ...

Page 6: ...hina and crystal This cycle is for medium soiled dishes and glassware This cycle is for heavily soiled dishes and glassware START Close the dishwasher door and turn the control timer knob to the desired setting Water fill begins and approximately 30 seconds later the wash action begins Door Latch Switch Automatically shuts off the dishwasher whenever the dishwasher door is opened The dishwasher wi...

Page 7: ... 7 Door Latch Switch Control Timer Front View Component Locator Views Control Panel View Static Vent Side Panel Control Panel Access Panel Insulation ...

Page 8: ... 8 Interior View With Racks Detergent Rinse Module Compartment View Compartment Lid Sight Glass Rinse Agent Cap Detergent Compartment Static Dry Vent Top Rack Bottom Rack Detergent Rinse Module ...

Page 9: ... Bottom View Looking Up Right Side View Side Panel and Insulation Removed Filter Assembly Microfilter Clamp Nut Heating Element SprayArm Fill Funnel Pressure Switch Hose Fill Hose Door Tension Spring Sump Drain Pump Capacitor Motor Pump Assembly ...

Page 10: ...ing any electrical component making ohmmeter checks or replacing any parts Note All voltage checks should be made with a voltmeter having a full scale range of 130 volts or higher After service is completed be sure all safety grounding circuits are complete all electrical connections are secure and all access panels are in place The timer allows the user to select the various cleaning cycles of th...

Page 11: ...Refer to mini manual or schematic diagram on page 39 for reconnection Note When installing the timer it is important to align the threaded holes A and B marked in steps 3 and 4 with holes A and B in the control panel Timer Control Panel White Connector Threaded Hole A Threaded Hole B B A Align the threaded holes marked in steps 3 and 4 with the holes in the control panel ...

Page 12: ... is closed the latch engages the door catch holding the door firmly against the seal and the normally open contacts of the double pole single throw door safety switch are closed Removal and Installation 1 Disconnect the electric supply from the dishwasher 2 Open the dishwasher door Caution Place a cloth or cardboard between the control panel and the dishwasher door to prevent marring the door 3 Re...

Page 13: ...oisture Removal 1 Open the dishwasher door 2 Remove the 6 screws that connect the control panel cover to the dishwasher door See Timer step 6 3 Release the door latch and allow the control panel cover to hang against the dishwasher door 4 Remove the static vent channel cover and assembly as shown below Inspect the cover for hard water lime deposits or debris and clean if necessary Cover Continued ...

Page 14: ... the dishwasher door Cover Make sure the edge of the control panel cover is flush with the edge of the door Door Panel The door panel covers the door to the dishwasher and protects the detergent rinse module electronics Removal 1 Disconnect the electric supply from the dishwasher 2 Open the dishwasher door 3 Remove the 6 screws and the door panel from the door assembly Do not remove the 6 screws t...

Page 15: ...rns to its original starting position Removal and Replacement 1 Disconnect the electric supply from the dishwasher 2 Remove the Door Panel 3 Remove the foam insulation Cover Detergent Rinse Module The detergent rinse module automatically dispenses both the detergent and the rinse agent at the appropriate times The module is activated twice during a wash cycle The first time the module is activated...

Page 16: ...ply from the dishwasher 2 Carefully pull the dishwasher out from its installation 3 Remove the screws from the top and back of each dishwasher side panel 16 screws total Open the door and remove the 4 screws securing the panels to the inside door frame 4 Lay the dishwasher on its back Remove the 4 screws securing the toekick to the dishwasher and remove the toekick Detergent Rinse Module Bracket B...

Page 17: ...oard between the control panel and the dishwasher door to prevent marring the door 5 Release the door latch and allow the control panel cover to hang against the dishwasher door Timer Door Latch 5 Remove the single screw just above and to the side of each front leveling leg 6 Disconnect the ground wire from the Timer 7 Disconnect the green and white multipin connectors from the Timer 8 Disconnect ...

Page 18: ...ote There is a door hinge assembly on both the left and right sides of the dishwasher Both door hinge assemblies must be removed in order to remove the door The procedure to remove the right side door hinge assembly is outlined in steps 13 through 24 The left side door hinge assembly removal is identical 13 Remove the 4 screws access panel and toe kick panel from the dishwasher 14 Remove the side ...

Page 19: ...Door Seal The bottom door seal prevents water leakage The seal is fitted in a pinched metal groove at the bottom of the dishwasher door Removal and Replacement 1 Remove the Door Panel 2 Remove the Door Assembly steps 13 through 22 only 3 Grab one end of the bottom door seal and peel it away from the pinched metal groove WARNING The pinched metal groove is sharp Wear Kevlar gloves when removing or ...

Page 20: ...channel Heating Element The heating element maintains water temperature during the wash and rinse cycles and heats the air during the static dry cycle See Specifications for heating element wattage ratings To check operation advance timer to the dry cycle set the selector switch for heated dry and close and latch the dishwasher door Allow one or two minutes before opening the dishwasher door and n...

Page 21: ...spheric pressure The fill funnel also allows air into the tub to permit air flow for dish drying Removal and Replacement 1 Fold back the insulation surrounding the fill funnel and air gap assembly 2 Open the dishwasher door 3 Rotate the fill funnel cap counterclockwise and remove it from the fill funnel threads Heating Element Turn CCW Funnel Cap Threads 4 Loosen the clamp disconnect the fill funn...

Page 22: ...embly Water Valve The water valve is timer controlled and solenoid operated The flow of water is controlled by a rubber flow washer capable of maintaining a flow rate of 1 8 14 gallons per minute 6 81 14 liters per minute with incoming water pressure of 20 to 120 PSI The water valve is mounted to the left hinge support of the dishwasher Removal and Replacement 1 Disconnect the electric supply from...

Page 23: ...ime the water fill valve remains open If the water fill valve remains energized the overfilling of the basin increases the air pressure in the pressure switch hose causing the pressure switch to open the circuit to the timer motor and closing the circuit to the drain pump The drain pump then empties the water in the sump 7 Label and disconnect the 3 terminal lugs from the float switch and remove t...

Page 24: ...mp Assembly The drain pump assembly is located under the tub at the right rear corner The drain pump operates on 120 VAC and is energized 60 seconds after the wash pump shuts down to remove any water in the dishwasher sump The drain pump forces the water out the drain line A check valve flapper on the drain pump prevents the dirty water from reentering the sump Removal and Replacement 1 Disconnect...

Page 25: ...ing removal and should not be reused Replace the old clamp with a new universal clamp part number WH1X2036 6 Remove the clamp from the motor main conduit interconnect hose Caution The clamp is easily damaged during removal and should not be reused Replace the old clamp with a new universal clamp part number WH1X2036 5 Remove the clamp from the motor sump interconnect hose Note Do not attempt to re...

Page 26: ... hoses and remove the motor pump assembly from the dishwasher 8 Remove the screw and disconnect the ground wire from the wash pump motor assembly Locknut As seen from right side of dishwasher Bolt Ground Wire As seen from rear of dishwasher Pull Out Pull Out Motor Tab Motor Mount Motor Pump Assembly ...

Page 27: ...g nut are accessed from inside the dishwasher The sump gasket and sump are located under the tub in front of the motor pump assembly Removal and Replacement 1 Disconnect power 2 Carefully pull the dishwasher out from its installation 3 Remove the 4 screws access panel and toe kick panel from the dishwasher 4 Remove the 10 screws and the right side panel 5 Remove the high pressure switch hose from ...

Page 28: ...e difficult to remove It may be necessary to insert a screw driver or other tool between the clamping nut tabs to enable you to apply sufficient torque to break the factory seal 11 Remove the clamping nut 12 Remove the sump gasket not shown and sump Clamp Nut Tabs ...

Page 29: ... complete all electrical connections are secure and all access panels are in place Troubleshooting the Door Switch The door switch can be tested using an ohmmeter and the strip circuit 1 Disconnect the electric supply from the dishwasher 2 Remove the wire leads from the door switch 3 Use an ohmmeter to check the door switch for continuity 4 If the door switch is defective remove it from the latch ...

Page 30: ...k operation advance timer to the dry cycle set the selector switch for heated dry then close and latch the dishwasher door Allow one or two minutes before opening the dishwasher door and note if heat is present 1 Disconnect the electric supply from the dish washer 2 Remove electrical connection from one side of heating element and test continuity 3 Measure the resistance of the heating element The...

Page 31: ...no electric supply check the door latch switch If there is electric supply disconnect electric supply and check the pump motor component resistance see Specifications page 4 3 If the pump motor does operate let the timer motor advance the timer through the drain increment to determine if the timer motor and drive train are fully operative 4 Let the timer advance or index it forward to the portion ...

Page 32: ...tion of the water valve attach a separate 115 volt grounded power source to the valve terminals and metal frame of the dishwasher Turn the power on for a few seconds and then turn the power off If water flow does not stop within 2 seconds after turning the water valve off replace the water valve No Water To Tub 1 Be sure the main water supply and electric power are turned on 2 Remove both the serv...

Page 33: ...r basin Water Fill Valve Will Not Shut Off 1 Turn on the dishwasher and allow the bottom of the basin to start filling with water Discon nect power while the basin is filling If water continues to flow turn off the water supply and replace the water fill valve 2 If the water turns off when power is discon nected troubleshoot the timer and motor Replace the defective part Water Fill Valve Strip Cir...

Page 34: ... wiring 4 Repair the wiring 1 Timer motor inoperative 1 Replace the timer 2 Damaged or defective wiring 2 Repair the wiring Dishwasher runs but will not stop 3 Defective timer 3 Replace the timer Dishwasher runs with door open 1 Defective door safety switch 1 Replace the door safety switch 1 Defective motor bearings 1 Replace the motor 2 Knob position advanced beyond fill 2 Advance the knob to the...

Page 35: ...ective drain pump 1 Replace the drain pump 2 Defective impeller 2 Replace the impeller 3 Defective timer 3 Replace the timer Water siphons out 1 Drain hose loop too low 1 Move the drain hose to the proper height 2 Drain line connected to a floor drain not properly vented 2 Install a vent air gap at counter top Too much water fill 1 Defective water fill valve 1 Replace the water fill valve 2 Defect...

Page 36: ...tomer on proper loading of the dishwasher Refer to the owners manual 2 Low incoming water temperature 2 Incoming water temperature of 140 F is required to properly dissolve dishwashing detergents 3 Water remaining in tub after drain cycle is completed 3 See Dishwasher will not pump out symptom 4 Defective heating element 5 Replace the heating element 5 Damaged or defective wiring 2 Repair the wiri...

Page 37: ...e amounts of detergent are being used 1 Instruct the customer on proper use of dishwasher detergent Refer to the owner s manual 2 Low incoming water temperature 2 Incoming water temperature of 140 F is required to properly dissolve dishwashing detergents 3 Improper loading of dishes pots pans and nesting of silverware 3 Instruct the customer on proper loading of the dishwasher Refer to the owner s...

Page 38: ...r lid latch operation and gasket seal Also see Detergent Rinse Module Proper Amount of Detergent Use full detergent cup of fresh detergent in hard water Use only enough detergent to get good wash performance in soft water Compartment Lid Sight Glass Rinse Agent Cap Rinse Agent Use rinse agent if spotting or drying is a problem A rinse agent will improve the water sheeting action and drying perform...

Page 39: ...0 9 8 7 12 11 B 11 14 12 BK VIO Violet BR Brown BU Blue GR Grayer O Orange W WHITE HOUSING YELLOW HOUSEING FLOAT SWITCH W R INLET VALVE DISPENSER BK BK BK BK DP WP C HEATER DRAIN PUMP R BU WASH PUMP VIO W OPTION SWITCH O BR GR R RED Y YELLOW W WHITE Bk BLACK TIMER MOTOR MT DOOR SWITCH BK W BK BK A1 A2 A7 B2 A4 B3 A3 B11 B12 B9 TIMER A12 A9 BK W Color Code Color Code 120V 60Hz SWITCH PRESSURE HOUSI...

Page 40: ... 40 Illustrated Parts Catalog ...

Page 41: ... 41 ...

Page 42: ... 42 ...

Page 43: ... 43 ...

Page 44: ...53 2 24 HEATING ELEMENT ASM WD05X10007 1 25 PRESSURE SWITCH HOSE WD24X10030 1 26 PRESSURE SWITCH WD21X10191 1 27 WATER VALVE W SCREWS WD15X10009 1 29 FILL HOSE WD24X10031 1 30 SQUEEZE CLAMP WD01X10251 1 31 FILL FUNNEL WD12X10170 1 32 O RING WD01X10243 2 33 RING NUT VENT CAP WD18X10029 2 34 RING NUT MANIFOLD SUPP WD01X10244 1 35 LOWER MANIFOLD SUPPORT WD18X10030 1 36 LOWER SPRAY SHIFT WD18X10031 1 ...

Page 45: ...M WD12X10175 4 68 GUIDE RAIL WD30X10022 2 69 GUIDE RAIL CAP WD12X10176 4 70 LEVELING LEG WD02X10118 4 71 JUNCTION BOX COVER WD12X10177 1 72 SCREW WD02X10120 2 73 TOE KICK WH WD27X10183 1 74 ACCESS PANEL WH WD27X10184 1 75 SCREW WH WD02X10122 4 77 LOWER FRONT BRACE WD27X10194 1 78 TUB BAND ASM WD08X10056 1 79 LOWER REAR BRACE WD27X10191 1 80 LEFT SIDE PANEL WD27X10189 1 81 UPPER RACK ASM WD28X10150...

Page 46: ...or used for other than the intended purpose or used commercially Replacement of house fuses or resetting of circuit breakers Damage to the product caused by accident fire floods or acts of God Incidental or consequential damage caused by possible defects with this appliance Cleaning or servicing of the air gap device in the drain line This warranty is extended to the original purchaser and any suc...

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