DDW398 SM
Contents
1. F reer 7 rer Fe Fe 1 ja i li i IE E th CIA Haa Tui ra ra sj ia ae iy rt Jia E ET AS 14 11 Power switch and option switch When you press the power switch on and the dishwasher remains dead with no power light this may be a malfunction of the power switch When you press the option switch and the heating element can not be energized and the Sani Econo light does not come on this may be a malfunction of the option switch PROCEDURE Inspecting powerswitch and option switch Step 1 Be sure all controls are Step 2 This procedure reguires the Step 3 Using a ohm meter check for turned OFF Disconnect power removal of the outer casing If you bad contacts in the power or option supply at distribution panel or are unfamiliar with this process please switches unplug power cord from outlet refer to procedure Removing outer watch for sharp edges casing Step 4 If the switch is defective replace the switch and reconnect same as original installation 15 12 Water inlet valve The wat2. expelling excess water The safety pressure switch shuts water off only in cases of electrical malfunction If mechanical defect or foreign object causes the inlet valve to stick open the safety pressure switch will not be able to stop overflow The safety pressure switch should never cut off the water inlet valve solenoid during normal fill if 1 does it 1s not properly adjusted PROCEDURE Inspecting and replacing Pressure switch Step 1 Be sure all controls are Step 2 This procedure reguires the Step 3 Hold ruler vertically in the turned OFF Disconnect power removal of the outer casing If you sump the tub should fill between supply at distribution panel or are unfamiliar with this process please 81 8 mm or 3 25 to3 5 inches unplug power cord from outlet refer to procedure Removing outer watch for sharp edges casing Step 4 If the water level is incorrect Step 5 If a pressure switch is bad Step 6 Pressure switches must be Check the pressure switch connecting remove mounting screw and replace adjusted with a special screwdriver hoses and all connections to see if switch to the proper level step 3 there 15 leakage and pressure loss After adjustment s complete a drop Reseal any loose connections of glue should be placed on the Threads to prevent further movement 18 14 Pump and Motor Assembly The circulation pump and drain pump are combined and driven by the same reversing motor The tim
3. 8 179 180 181 182 28 29 30 105 31 NA te WERL 32 33 34 36 37
4. SERVICE MANUAL COUNTER TOP DISHWASHER DDW398W DDW399W DANBY PRODUCTS LTD GUELPH ONTARIO NIH6Z9 DANBY PRODUCTS INC FINDLAY OH 45839 2 10 11 12 13 14 5 16 17 18 19 20 Performance Check Detergent and Rinse Agent Power Connections Power Switch and Option Switch Water Inlet Valve 10 91919313 1 Circuit Diagram MAIN SWITCH Be 4 HEATING ELEMENT 4 4 AIA RINSE AID POWER PILOT LAMP 62 OPTION SWITCH INLET VALVE NORMAL LEVEL CIRC PUMP 2 Tools and Test Equipment Hand Tools A basic compliment of hand tools 1 e flat and phillips head screw drivers socket set pliers and wire striper crimping tool A basic volt ohm meter VOM will also be required for circuit and component testing 3 Troubleshooting Problem 1 Pump and timer do not run power pilot is not illuminated 2 Too little or no water fill 3 Water does not shut off 4 Water pumping out before washing dishes 5 Timer does not advance 6 Water does not pump out 7 Dishwasher leaks 8 Detergent remains in detergent 9 Rinse agent dispenser does release rinse agent 10 Rinse agent dispenser leaks 11 Poor washing results 12 Poor drying Possible Cause Power receptacle defective Power cord defective Open wire to timer Open door latch switc
5. asher timer consists of a timer motor and a variety of switches that automatically controls every phase of the dishwashers operation The timer motor runs at a constant speed like a clock As it advances through the selected cycle the timer s internal switches open and close in a precise sequence When a preset period has elapsed the timer opens the switch again and shuts off the power to that component All outgoing wires from the timer are number coded By referring to the circuit diagram you can trace the path of electrical current from the timer to any component The timer is a very reliable mechanism It is best to eliminate all other possible causes before attempting to test or replace the timer PROCEDURE Inspecting and replacing timer Step 1 Be sure all controls are Step 2 This procedure requires the Step 3 To check timer motor set the turned OFF Disconnect power removal of the outer casing If you timer to the off position and check for supply at distribution panel or are unfamiliar with this process please continuity through the motor windings unplug power cord from outlet refer to procedure 7 Removing outer approx 2k ohms If the windings are Watch for sharp edges Casing open replace timer Step 4 Refer to dishwasher s circuit Diagram page to see which contacts close to activate a particular component Example 4 to 4a close for drain pump Refer to the timing chart on page 14 to determine when the individual
6. ater inlet valve Reconnect using encapsulant Replace pump and motor assembly See pump and motor assembly See detergent and rinse agent See loading dishes See 2 Check rinse agent level check rinse agent dispenser Check timer Replace gasket Replace dispenser See loading dishes See detergent and rinse agent Choose proper cycle Check drain hose Check wash system Clean wash arm Replace dispenser Fill rinse agent dispenser See heating element 3 Troubleshooting Problem 13 Condensation on door 14 Dishwasher door is difficult to open or close 15 Noise during operation 16 Hose connector leaks Cont Possible Cause Some condensation is normal Door gasket emersion Door linkage bent Door hook deflection Dishes rattling Drain pump viberating Foreign object in pump Silcon sleeve worn Connector hose washer defective Connector gasket damaged Repair Procedure Cause steam vent on door Pull gasket into slot See door latch assembly See door latch assembly See loading dishes See pump and motor assembly Check wash pump See hose connectors Replace washer Replace connector gasket 4 Performance Check Loading Many performance problems that commonly occur in dishwashers are not due to mechanical defects Problems with poor washing results can often be resolved without making repairs The procedures in this manual are designed to help you eliminate performance problems before you begin checking and t
7. contacts close PROCEDURE Inspecting and replacing timer Continued Step 5 Remove the leads from the Step 6 To remove the timer remove Step 7 Move leads terminal for Terminals to be checked Using an the two timer mounting screws terminal to the new timer ohm meter check the resistance through the contact while turning the timer If the contacts being checked do not close at the appropriate times during the cycle replace the timer Step 8 Remount new timer Step 9 Reassemble dishwasher apply power and test operation 13 Cam Timing Chart Timer WI bd ai LG E AA Eo E mm BER I 7 7 10 wa ST eae HEP e METE ae ARA BEER PARYS LT I I I U ig Pe ED EE E a TL man A Be 13 ii F _ nn
8. d inspect cap and washer access cover on rear of dishwasher supply at distribution panel or reassemble wipe off tank and wait 5 Inspect tank for signs of leakage If unplug power cord from outlet Minutes If seepage still shows the tank is cracked or split replace the watch for sharp edges replace the dispenser assembly dispenser assembly Step 4 Check wiring connections and terminals Step 5 To remove the dispenser assembly Replace or repair any faulty connections remove the fill cap and mounting nuts from Using an ohm meter check for solenoid for inside the tub after the mounting nuts are continuity If the coil is open no reading removed the dispenser assembly con be replace the coil replaced from the access panel on rear 23 1 20 21 22 29 24 29 26 2 28 29 30 31 32 33 34 35 36 37 38 39 40 41 Description Absorbtion Proofed Hose Clamp 24 Campe 2 Clamp 28 Nt 3 3 5 Nut 24 mp Qty Per Unit 1 GO CO 78598 00 co 00 Description Qty Per Fan 098 7 66 1021 698 68 Ventilation window gasket 1 68398 7 69 Ventilation window 1 69 308 __76 76008 7 77 Screwgasket 6 77308 7 80 inletconnectort 1 80398 25 Desc
9. ed for good results If you have soft water or a water softener use less detergent 6 Power Connections Dishwashers plug into standard 120 volt wall receptacles with a three pronged grounded plug If the dishwasher fails to operate properly the power cord may be preventing power from reaching the unit Most problems associated with the power cord or connection are caused by damage and or loose connections and will likely be visible CAUTION To minimize the possibility of electric shock be certain that the wall receptacle and circuit are properly grounded before using the dishwasher Use of a plug adapter to adapt to a two prong outlet is NOT recommended Under no circumstances should you attempt to cut off or otherwise remove the third prong ground prong from the power cord PROCEDURE Inspecting Power Connections Step 1 Be sure all dishwasher Step 2 Inspect power cord at Step 3 Pull plug from receptacle with Controls are turned off connection to receptacle Improper firm quick tug Always grasp the connection could be the sole cause plug never pull the cord Be careful of trouble Not to contact the blades of plug Step 4 Inspect plug carefully for Step 5 To replace cord disconnect remove Damaged corroded or loose terminals mounting screws on power cord strain relief Look for signs of overheating around Disconnect internal connections and install the molded portion If plug is damaged new cord same as original Reas
10. er activates the circulation winding during wash and the drain winding during pumpout with pauses between changes n direction PROCEDURE Inspecting and replacing Pump and motor assembly Step 1 Be sure all controls are Step 2 This procedure requires the Step 3 Unclip and remove washarm turned OFF Disconnect power removal of the outer casing If you Unthread and remove washarm base supply at distribution panel or are unfamiliar with this process please nut unplug power cord from outlet refer to procedure 7 Removing outer watch for sharp edges cas ng Step 4 Turn dishwasher up s de Step 5 Using a ohm meter check Step 6 If defective release hose down Remove 4 motor mounting the pump motor windings camps and replace pump and motor and bracket mounting screws Wash winding blue lead on resistor assembly Release wire clips and remove Drain winding 14 on safety bottom panal pressure switch Common black lead on fill valve 19 15 Heating Element and Safety Thermostat The heating element is located at the bottom of the sump When the unit is energized during the heated wash cycle it heats the water The warmed air rises through the sump cover into the tub providing efficient washing drying of the dishes An inner resistance coil of nichrome wire which does the actual heating is completely surrounded by an electrical insulation material This assembly is protected by a metal sheath to help red
11. er inlet valve controls the flow of water into the dishwasher A solenoid coil attached to the valve housing creates a magnetic field when energized This magnetic field pulls open a plunger inside the valve allowing the water to flow through and into the dishwasher The water fill is controlled by the timer which opens the valve for a predetermined amount of time Under normal conditions tub should fill to approximately 85mm or 3 5in from the bottom of the sump Open the dishwasher after any fill cycle to check for normal water level A malfunctioning water inlet valve solenoid may only allow the dishwasher to fill intermittently In this case no water will enter the dishwasher during the rinse cycle This problem can best be diagnosed by operating the dishwasher and listing for the water entering during each fill cycle PROCEDURE Inspecting and replacing Water inlet valve Step 1 Be sure all controls are Step 2 This procedure requires the Step 3 Locate valve where inlet hose turned OFF Disconnect power removal of the outer cas ng If you 15 attached Check wires and valve supply at distribution panel or are unfamiliar with this process please body unplug power cord from outlet refer to procedure Removing outer watch for sharp edges cas ng Step 4 If water fill is less than Step 5 Using a ohm meter check for Step 6 To replace water valve normal detach fill hose to expose continuity through the solenoid If s
12. esting the dishwasher s components To get the best results from the dishwasher it is necessary to form good loading habits If the dishwasher seem to be running correctly but does not get the dishes really clean check to be sure it is being loaded properly The owner s manual gives detailed instructions on this procedure nt meng MA eee iri E Ae P4 Tiga PIA ELA PROCEDURE Loading dishwasher 5 Performance Check Detergent rinsing agent Water and detergent are major factors for good dishwasher performance Water pressure hardness and temperature also play vital roles in getting good results The correct detergent in proper amounts is egually important The water hardness in your area will effect the amount of detergent needed to get clean dishes PROCEDURE Checking detergent Step 1 For personal safety Step 2 Only use detergent intended Step 3 This dishwasher has a rinse always exercise caution when specifically for automatic dishwashers agent dispenser make sure it is working with any electrical Make sure the detergent is fresh and filled The rinse agent makes the appliance dry Old caked detergent will not water flow off the dishes faster this wash well reduces spotting and aids drying NOTE Check with the local water company concerning the water conditions in your area With very hard water more detergent may be requir
13. h Power switch defective Kinked fill hose Low houes water pressure Blocked inlet valve or faucet Open or defective pressure switch Pressure switch defective water inlet valve stuck open Pressure switch defective Poor terminal connection on timer Defective timer Drain hose kinked or blocked Resistance or capacitance defect Dishwasher not level Door not closing tightly Crack in hose connection Gasket damaged Inlet valve connector loose or defective Loose connection between pump amp sump Pump body damaged Pump seal defective Detergent is old and caked Dishes block water from detergent cup No or low water No rinse agent in dispenser Solenoid inoperative Open timer contacts Dispenser gasket defective Dispenser tank cracked Improper loading Detergent old incorrect type or amount Improper cycle selection Kinked or cloged drain hose Foreign material in wash system Foreign material in spray arm Rinse agent leaks into tub during wash Rinse agent not used heating unit inoperative 3 Repair Procedure Check receptacle Check power cord Check timer Check wiring and connection Check option switch and power switch Check inlet hose check faucet Check inlet valve and faucet See pressure switch See pressure switch See inlet valve See pressure switch See timer See timer Check drain hose See pump and motor assembly Adjust leveling legs Adjust latch strike Replace hose Replace gasket Check w
14. hut off water supply and disconnect filter screen Clean or replace as solenoid winding is open replace faucet coupling necessary valve 16 PROCEDURE Inspecting and replacing Water inlet valve continued Step 7 Disconnect incomming water Step 8 Remove mounting screw that Water supply hose Remove clamp secures fill valve to rear panel Install and detach smaller hose running into new valve and reconnect leads and dishwasher tub water lines Reassemble dishwasher and reconnect water and power supply NOTE If water continues to fill even when power is disconnected this is caused by damage to sediments in valve housing or bellows In either case entire valve should be replaced NOTE If open winding in solenoid were proceeded by continuous filling and draining Make sure timer is Advancing through the fill cycle Continuous duty will burn out water valve solenoid 1 13 Pressure Switches There are two pressure switches on the dishwasher One 15 for controlling normal water level set at approx 85mm or 3 5 inches of water in sump This will be referred to as the Normal Pressure Switch The other one is for preventing overflow and is set for approx 102mm or 4 inches of water in sump This will be referred to as the Safety Pressure Switch If the water n the tank r ses above the pre set level the safety pressure switch opens the Circuit and stops power to the fill valve and closes the circuit to the drain pump
15. lly printed on the wire itself PROCEDURE Repairing wiring and connections Step 1 Be sure all controls are Step 2 This procedure reguires the Step 3 Inspect all push on terminals turned OFF Disconnect power removal of the outer casing If you and inner connecting wiring for signs supply at distribution panel or are unfamiliar with this process please of damage 1 burnt pinched loose or unplug power cord from outlet refer to procedure 7 Removing outer frayed Watch for sharp edges Casing 10 9 Door Latch The door latch s essential to the operation of the d shwasher Latching the door closes a switch allowing electrical current to flow to the timer The timer controls all other components If the door latch switch is open the dishwasher will not operate The latch switch cannot be activated while the door 18 open This safety mechanism prevents the dishwasher from being operated when the door is open However if the door latch switch contacts become stuck in the closed position the dishwasher will not stop when door s opened during the cycle PROCEDURE Door Latch Switch Replacement Step 1 Always unplug from Step 2 Remove outer casing Step 3 Check for defects in micro receptacle before repairing switch or connections If switch is bad remove the two mounting screws Disconnect and replace switch Step 4 Install new microswitch and connect same as original installation 11 10 Timer The dishw
16. ption 15 selected When the san option 15 selected the timer stops at specific points in the cycle and the heating element 15 energized When the water temperature reaches 154 F or 67 7 the thermostat contacts close and the timer continues through the cycle The extra water heating period assures temperatures high enough to produce good wash results PROCEDURE Inspecting and replacing Normal Thermostat Normal thermostat Step 1 Be sure all controls are Step 2 This procedure requires the Step 3 The normal thermostat can be turned OFF Disconnect power removal of the outer casing If you accessed from the left side of the dish supply at distribution panel or are unfamiliar with this process please washer and is on the back of the sump unplug power cord from outlet refer to procedure 7 Removing outer watch for sharp edges casing Step 4 Using an ohm meter remove the wires Step 5 To replace the normal thermostat and check for continuity across the thermostat remove the two mounting screws and install terminals These contacts should always be the new component Open at room temperature so if there is any Reassemble dishwasher and check operation reading at all the thermostat must be replaced 21 1 Hose Connector The hose assembly s made up of a water inlet hose a drain hose and a hose connector The hose connector fastens to the kitchen faucet by means of a faucet adapter The hose connector also has a pressu
17. re relief button to relieve pressure before disconnecting and allows water to be used in the sink while the dishwasher is operating PROCEDURE Inspecting and replacing Hose Connector Step 1 Be sure all controls are Step 2 Inspect hoses for cracking or Step 3 Any leaks n the connector turned OFF Disconnect power deterioration Disconnect and replace are resolved by replacing the hose supply at distribution panel or as necessary connector as an assembly unplug power cord from outlet watch for sharp edges Step 4 Replace washers in all Leaking hose connections Reassemble dishwasher and Check operation 22 18 Rinse Agent Dispenser The rinse agent dispenser on dishwashers automatically inject a small amount of liquid rinse agent into the dishwasher during the final rinse cycle This wetting solution acts to break down the surface tension of the water minimizing the formation of spots and streaks on dishes and glasses The dispenser tank holds about one month supply of agent During the final rinse the timer activates a solenoid on the dispenser assembly The solenoid pulls up a rubber tipped valve pin allowing a small amount of agent to be released into the tank where it is distributed by the action of the water PROCEDURE Inspecting and replacing Rinse agent dispenser Step 1 Be sure all controls are Step 2 If rinse agent is leaking inside Step 3 Remove six screws and small turned OFF Disconnect power remove an
18. ription 86 Dispenser covers 7 89 Dispenser body assembly 7 90 Door lock holder Door lock spring 1 98 Door look spring nn Insulati Inlet valve mounting plate nsulation porcelain ES al a 1 2 gt gt gt gt af a ASIA aj 5 lt 0 Pilot holder 26 Description Qty Per Unit _____ 20000 _____ BEE EEE 7 131 Cross recessed big pan head 8 131398 app sere 7132 ross recessed big pan head 8 132398 app sore S read forming J o _____ TT _____ OOo S app sore J Cross recessed head screw 4 145 398 Cross recessed pan head screw 2 146 398 _____ O O OOOO S _____ TS 150 __ 8 160398 27 Unit 153 2 154 155 Cross recessed pan head tapping screw 153 398 154 398 155 398 156 398 197 398 158 398 159 398 160 398 161 398 162 398 163 398 164 398 165 398 166 398 167 398 168 398 169 398 170 398 171 398 172 398 173 398 174 398 175 398 176 398 177 398 178 398 179 398 180 398 181 398 182 398 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 17
19. semble replace the power cord dishwasher and check operation 7 Removing Outer Casing And Control Panel PROCEDURE Removing outer case Step 1 For your personal safety Step 2 Remove stainless steel screws Step 3 Open door and remove s x exercise caution when working with on both sides of outer casing Screws on left and top edges of any electrical appliance inner liner Step 4 Remove cas ng screws on Step 5 Lift casing straight off Step 6 Remove six screws fastening rear of unit front control cover 8 Inner Wiring Connections Check Power is carried to the components of the dishwasher by a network of insulated wires These wires are connected to the timer switches and other dishwasher components by means of push on connectors Itis very important that the wiring be free of any damage Any cut that reduces the diameter of the wire reduces the amount of power it will carry Also the wire may overheat and eventually break at that point If the terminals become dull and oxidized they should be replaced Whenever servicing the wiring harness be sure to note the of any green and or yellow brown ground wires in the area in which you are working Be certain all are properly connected upon completion of service This is vital to avoid danger of shock or short circuit CAUTION If replacement wire is reguired use only appliance wire having the same temperature and guage rating as the wire you are replacing This information is usua
20. uce damage and oxidation Since you can t see the internal coil in most cases you will have to rely on the ohm meter to determine the condition of the coil The safety thermostat acts as a temperature limit switch If a malfunction causes the temperature rises above the Limit of the thermostat the heating element is disabled preventing damage to the dishwasher PROCEDURE Inspecting and replacing Heating element and thermostat Step 1 Be sure all controls are Step 2 This procedure requires the Step 3 The heater and thermostat are turned OFF Disconnect power removal of the outer casing If you located on the left side of the dish supply at distribution panel or are unfamiliar with this process please washer in the end of the sump unplug power cord from outlet refer to procedure Removing outer remove wires and inspect visually for watch for sharp edges casing burned or damaged connections Thermostat f Step 4 Using an ohm meter remove the wires Step 5 To replace either componant remove the two And check for continuity through the element mounting nuts using 8mm 11 32 deepwell scocket And safety thermostat independently If either Install new component and re assemble dishwasher component checks reading 1t is bad and needs to be replaced 20 16 Normal Thermostat The normal thermostat is used to control the water temperature during the wash and final rinse when the sani o
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