Table of Contents
Advertisement
Advertisement
Table of Contents
Troubleshooting
Related Manuals for Whirlpool DU800DWG
Summary of Contents for Whirlpool DU800DWG
- Page 1 CONSUMER SERVICES TECHNICAL EDUCATION GROUP PRESENTS JOB AID Part No. 4322430...
- Page 2 INTRODUCTION This Job Aid, “1998 DISHWASHERS, Servicing and Troubleshooting ,” (Part No. 4322430) provides specific information for the installation, service and repair of 1998 Whirlpool Dishwashers. “1998 DISHWASHERS, Servicing and Troubleshooting ,” has been compiled to provide the most re- cent information on design, features, troubleshooting, service and repair procedures.
-
Page 3: Table Of Contents
SECTION ONE DURAWASH MODELS W/ SOIL SETTLER AND TELESCOPING TOWER Model: DU800DWG, DU801DWG, DU805DWG, DU810DWG, DP840DWG, DU840DWG, DU850DWG, DU890DWG Theory of Operation ......... . . 1 Component Access . - Page 4 -- NOTES --...
-
Page 5: Theory Of Operation
Section One THEORY OF OPERATION Console Configuration DU800DWG, DU801DWG, DU805 DU810DWG DU840DWG, DP840DWG DU850DWG DU890DWG... - Page 6 Special Feature Soil Settler This model is equipped with a soil settler system. The inlet to the soil settler funnel is located to the right and just behind the lower spray arm assembly. (Fig. 1-1) Fig. 1-1 Since this inlet is located in an area that is relatively free of water turbulence, food particles washed from the dishes can collect in this area and fall through the funnel and accumulate in the collector.
-
Page 7: Component Access
COMPONENT ACCESS WARNING ELECTRICAL SHOCK HAZARD Disconnect electric supply from the dishwasher before servicing. Replace all panels before operating. Failure to do so could result in death or electrical shock. Component Location (Bottom Right-side Rear of Tub) - Page 8 Removing the Spray Arm Assembly 1. Disconnect the dishwasher from the house- hold electrical system. 2. Open the dishwasher door and remove the lower rack. 3. Use an adjustable slip-nut wrench and loosen the pump outlet nut. (Fig. 1-4) 4. Lift the spray arm assembly out of the pump fitting. Fig.
- Page 9 4. Disconnect the drain hose from the drain valve by loosening the Hex-head screw on the hose clamp. (Fig. 1-7) 5. Disconnect the pump inlet hose from the pump and motor assembly. (Fig. 1-7) 6. Remove the pump and motor assembly from the bottom of the dishwasher. NOTE: Once the pump and mo- tor assembly has been removed from the tub,...
- Page 10 Removing the Soil Settler Assembly 1. Disconnect the dishwasher from the household electrical system and lay the unit on its back. 2. Remove the four (4) Hex-head screws securing the soil settler assembly to the tub. 3. Disconnect the two (2) hoses from the soil settler collector. 4.
- Page 11 Removing the Water Inlet Valve 1. Turn off the water supply to the dishwasher. 2. Turn the timer knob clockwise to the NORMAL WASH position to energize the water inlet valve and relieve water pressure in the line. 3. Turn the electrical supply to the dishwasher off and remove the toe panel and access panel. (Fig.
- Page 12 Removing the Check Valve RETAINING SCREW 1. Remove the toe panel and access panel from the bottom of the dishwasher. 2. Remove the hoses from the check valve. Fig. 1-19 3. Remove the Hex-head screw securing the check valve to the tub support.
- Page 13 Removing the Timer Wiring Harness Connector 1. Disconnect the dishwasher from the electrical supply and remove the toe panel and access panel from the bottom of the dishwasher and the inner door panel. Screw 2. Disconnect the wiring harness connectors from Screw the timer terminals.
- Page 14 Dishwasher Dispenser Disassembly Remove the drawbar spring. (Fig. 1-26) Align the lower drawbar holes with the locking tabs and remove the upper and lower drawbars. As you do, note the locating tabs behind them and how they align with their respective locating holes.
- Page 15 Fig. 1-28 Fig. 1-29 Fig. 1-31 Fig. 1-30...
- Page 16 Dishwasher Dispenser Assembly Assembly the upper slide, slide spring and lower slide to the detergent door actuator. (Fig. 1-32) Pass the detergent door latch lever through the panel making sure to turn the hook of the latch toward the detergent door.
-
Page 17: Solutions To Common Problems
SOLUTIONS TO COMMON PROBLEMS DIAGNOSING PROBLEM COMPONENTS PRECAUTIONS TO BE OBSERVED WHILE DIAGNOSING PROBLEM COMPONENTS Disconnect electric power from the dishwasher. Voltage checks should be made by inserting meter probes beside the wires in the connector blocks with the electric power source on and the connector block plugged in. - Page 18 COMPONENT SCHEMATIC TESTING PROCEDURE RESULTS Timer Motor Disconnect the Wiring harness Meter should read 1800 - 3000 connector from the timer assembly. Set VOM meter on the Rx1 scale. Measure resistance between timer motor terminals. Timer Disconnect the wiring harness Contact CLOSED - meter should connector from the timer assembly.
-
Page 19: Troubleshooting Guide
TROUBLESHOOTING GUIDE PRECAUTIONS TO BE OBSERVED WHILE TROUBLESHOOTING AND DIAGNOSING PROBLEMS Always check wiring harness and connectors before initiating any test procedures. Disconnect electric power from the dishwasher before touching the printed circuit boards or re-seating wire connectors. Voltage checks should be made by inserting meter probes beside the wires in the connector blocks with the electric power source on and the connector block plugged in. -
Page 20: Technical Information
TECHNICAL INFORMATION Wiring Diagram Models DU800DWG, DU801DWG, DU805DWG SCHEMATIC SHOWN WITH DOOR SWITCHES CLOSED, ALL CONTACTS OPEN... - Page 21 Cycle Timing Chart...
- Page 22 Wiring Diagram Model DU810DWG SCHEMATIC SHOWN WITH DOOR SWITCHES CLOSED, ALL CONTACTS OPEN...
- Page 23 Cycle Timing Chart...
- Page 24 Wiring Diagram Models DU840DWG, DP840DWG SCHEMATIC SHOWN WITH DOOR SWITCHES CLOSED, ALL CONTACTS OPEN...
- Page 25 Cycle Timing Chart...
- Page 26 Wiring Diagram Model DU850DWG SCHEMATIC SHOWN WITH DOOR SWITCHES CLOSED, ALL CONTACTS OPEN...
- Page 27 Cycle Timing Chart...
- Page 28 Wiring Diagram Model DU890DWG SCHEMATIC SHOWN WITH DOOR SWITCHES CLOSED, ALL CONTACTS OPEN...
- Page 29 Cycle Timing Chart...
- Page 30 --NOTES --...
- Page 31 Section Two THEORY OF OPERATION Console Configuration Model DU910PFG Models DP920PFG, DU920PFG Fig. 2-1 POWER CLEAN FILTER Pump and Motor Operation 1. Once the tub has filled with hot water the motor begins to rotate forcing the water up through the pump chamber and out through the spray arms.
- Page 32 COMPONENT ACCESS INDICATOR LIGHTS TIMER DETERGENT AND RINSE AID PROGRAM DISPENSER SWITCHES ASSEMBLY HEATER LATCH ASSEMBLY FILL VALVE PUMP AND MOTOR ASSEMBLY MOTOR RELAY OPERATING HI LIMIT FLOAT THERMOSTAT THERMOSTAT SWITCH (Attached to bottom of pump housing)
- Page 33 Removing the Heater Element From beneath the cabinet: 1. Remove the front access panel. (See Removing the Outer Door Panel) 2. Pull the spade connectors off the heater element terminals. 3. Unscrew the two (2) nuts securing the heater element to the bottom of the tub. (Fig.
- Page 34 2. Disconnect the wiring harness from the motor harness plug. 3. Rubber clamps secure the pump and motor assembly to the tub. Rotate these inward 90°. (Fig. 2-7) 4. Remove the drain hose and clamp from the check valve and unscrew the check valve from the pump.
- Page 35 ACCESSING COMPONENT INSIDE THE DISHWASHER DOOR Removing Access and Outer Door Panels 1. Loosen but do not remove the two (2) toe panel screws below the access panel. Re- move and set aside the two (2) screws above the access panel. (Fig. 2-11) 2.
- Page 36 Replacing the Spring Loaded Locking Tab The inner door panel is held in place by a spring loaded locking tab located on the door frame rail, just below the console. (Fig. 2-14) To remove this assembly, remove the spring and slide the locking tab back until the locating tab is in the key hole.
- Page 37 TROUBLESHOOTING GUIDE Model DU910PFG PRECAUTIONS TO BE OBSERVED WHILE TROUBLESHOOTING AND DIAGNOSING PROBLEMS Always check wiring harness and connectors before initiating any test procedures. Disconnect electric power from the dishwasher before touching the printed circuit boards or re-seating wire connectors. Voltage checks should be made by inserting meter probes beside the wires in the connector blocks with the electric power source on and the connector block plugged in.
- Page 38 TECHNICAL INFORMATION Model DU910PFG Wiring Diagram SCHEMATIC SHOWN WITH DOOR SWITCHES CLOSED, ALL CONTACTS OPEN...
-
Page 39: Strip Circuits
Strip Circuits WASH (Steps 2 - 7, 10 - 12, 15 - 20, 24 - 28, 49) HEAT DRY (Steps 30 - 44) NO HEAT DRY (Switch H OPEN) WATER HEATING (Steps 6 - 7, 18 - 19, 23 - 24) DRAIN (Steps 8, 13, 21 - 22, 29, 50) FILL (Steps 1, 9, 14, 23, 48) Harness Terminal Block (Wire End) - Page 40 Cycle Timing Charts...
- Page 41 TROUBLESHOOTING GUIDE Models DP920PFG & DU920PFG PRECAUTIONS TO BE OBSERVED WHILE TROUBLESHOOTING AND DIAGNOSING PROBLEMS Always check wiring harness and connectors before initiating any test procedures. Disconnect electric power from the dishwasher before touching the printed circuit boards or re-seating wire connectors. Voltage checks should be made by inserting meter probes beside the wires in the connector blocks with the electric power source on and the connector block plugged in.
-
Page 42: Wiring Diagram
TECHNICAL INFORMATION Models DP920PFG & DU920PFG WIRING DIAGRAM CONNECTOR PIN OUT Pin No. DESCRIPTION Wire Color Ribbon Cable to User Interface P2-1 Pressure Switch (Soil Sense) O - GY P2-2 Thermistor/Thermostat GY - O P2-3 Detergent Dispenser O - BK P2-4 Rinse Agent Dispenser P2-5... - Page 43 STRIP CIRCUITS...
- Page 44 STRIP CIRCUITS CYCLE TIMING CHART...
- Page 45 CYCLE TIMING CHART NOTES Note 1: Pre-Wash Sense Interval “sani rinse” has been selected, the target thermal hold temperature for the Pressure switch contact closure at any time during this interval causes the “sani rinse” option must be satisfied and maintained. If this condition is not cycle to jump to interval 37.
- Page 46 HEATER SOIL SENSE NOTE 3 REFERENCE NOTES WHIRLPOOL ‘98 DIAGNOSTICS DIAGNOSTICS AND SALES DEMO TIMING CHART NOTES The diagnostics test cycle starts at interval 11 and concludes at interval illuminated whenever the control detects a resistance of greater than 2. To initiate the diagnostics test cycle, press the following sequence of approximately 45 K-OHMS on the thermistor/ thermostat circuit.
- Page 47 Section Three THEORY OF OPERATION Console Configurations Model GU940SCG Model GU960SCG Model GU980SCG POWER CLEAN FILTER Pump and Motor Operation 1. Once the tub has filled with hot water the motor begins to rotate forcing the water up through the pump chamber and out through the spray arms.
- Page 48 COMPONENT ACCESS Servicing the Vertical Water Tube The vertical water tube in these models delivers water to the spray arm mounted underneath the upper dish rack and a smaller spray arm mounted at the top of the dishwasher tub. (Fig. 3-4) If the pump and motor assembly must be removed for servicing, the vertical water tube must be disconnected from the pump cover as...
- Page 49 Servicing the Soil Sensing System The Soil Sensing System consists of a pressure sensitive switch connected to the dishwasher pump base. (Fig. 3-8) The system detects excessive amounts of food soils during the sensing portion of the wash cycle and signals the electronic control board to either terminate the wash cycle and initiate drain to flush soils from the system or skip certain parts of the heavy soil cycle.
- Page 50 Dishwasher Dispenser Disassembly Remove the drawbar spring. (Fig. 3-10) Grasp the lower edge of the drawbar and pull it away from the panel stop. Slide the drawbar down until the drawbar holes align with the locking tabs, then remove the drawbar.
- Page 51 Fig. 3-12 Fig. 3-13 Fig. 3-14...
- Page 52 Dishwasher Dispenser Assembly Assembly the slide and slide spring to the detergent door actuator. (Fig. 3-15) Pass the detergent door latch lever through the panel, making sure to turn the hook of the latch toward the detergent door. Snap the detergent door latch snap onto the door latch lever.
-
Page 53: Diagnostics
HEATER SOIL SENSE NOTE 3 REFERENCE NOTES WHIRLPOOL ‘98 DIAGNOSTICS DIAGNOSTICS AND SALES DEMO TIMING CHART NOTES The diagnostics test cycle starts at interval 11 and concludes at interval illuminated whenever the control detects a resistance of greater than 2. To initiate the diagnostics test cycle, press the following sequence of approximately 45 K-OHMS on the thermistor/ thermostat circuit. -
Page 54: Troubleshooting
TROUBLESHOOTING GUIDE PRECAUTIONS TO BE OBSERVED WHILE TROUBLESHOOTING AND DIAGNOSING PROBLEMS Always check wiring harness and connectors before initiating any test procedures. Disconnect electric power from the dishwasher before touching the printed circuit boards or re-seating wire connectors. Voltage checks should be made by inserting meter probes beside the wires in the connector blocks with the electric power source on and the connector block plugged in. - Page 55 TECHNICAL INFORMATION Model DU940SCG, DU960SCG, DU980SCG WIRING DIAGRAM CONNECTOR PIN OUT Pin No. DESCRIPTION Wire Color Ribbon Cable to User Interface P2-1 Pressure Switch (Soil Sense) O - GY P2-2 Thermistor/Thermostat GY - O P2-3 Detergent Dispenser O - BK P2-4 Rinse Agent Dispenser P2-5...
- Page 56 STRIP CIRCUITS...
- Page 57 STRIP CIRCUITS CYCLE TIMING CHART...
- Page 58 CYCLE TIMING CHART NOTES Note 1: Pre-Wash Sense Interval “sani rinse” has been selected, the target thermal hold temperature for the Pressure switch contact closure at any time during this interval causes the “sani rinse” option must be satisfied and maintained. If this condition is not cycle to jump to interval 37.
-
Page 59: Section Four
Section Four INSTALLING CUSTOM PANEL ACCESSORY KIT Custom Color Panels: Black P/N 675775 White P/N 675776 Almond P/N 675777 Installation Instructions In many instances, customers want to integrate the undercounter dishwasher appearance with overall kitchen design by installing panels of wood matching that used in the cabinets. After the two panels - an upper panel and a lower panel - are cut and finished as described below, use the materials in the Dishwasher Custom Panel Accessory Kit to install them by following the installation instructions. - Page 60 4. Pull the bottom of the outer door panel out- ward and slide it down approximately ¼” to ½”. The panel will then be free for removal. (Fig. 4-1, inset) Set the door panel aside; it will be replaced with a new custom panel. 5.
- Page 61 11. Reinstall the two (2) access panel screws re- IMPORTANT moved earlier to secure the access panel to the dishwasher. Tighten the right screw first, Be sure the door panel is inserted then the left. into the rear channel. (Fig. 4-5) Access Panel Extension (Fig.
- Page 62 Installing Heavy Duty Door Springs Standard door springs may need to be replaced by heavy duty springs designed to compensate for the increased weight of the door resulting from the installation of custom panels. Perform the following tests to determine whether the heavy duty springs need to be installed. Heavy Duty Door Spring Kit: Kit contains two (2) heavy duty door springs and instruction sheet.
-
Page 63: Installation Instructions
INSTALLING THE FLOOR MOUNTING KIT Fig. 4-12 KIT CONTENTS (P/N 4378968): P/N 9743463 Brackets (Fig. 4-12) P/N 4378974 Instruction Sheet INSTALLATION INSTRUCTIONS 1. Loosen the two (2) screws below the access panel Fig. 4-13 and remove the two (2) screws above the access panel. - Page 64 -- NOTES --...