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Haier UNDERCOUNTER DISHWASHER Training Presentation

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HAIER
UNDERCOUNTER
DISHWASHER
Training Presentation

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  Summary of Contents for Haier UNDERCOUNTER DISHWASHER

  • Page 1 HAIER UNDERCOUNTER DISHWASHER Training Presentation...
  • Page 2: Control Panel

    CONTROL PANEL POWER BUTTON In to RUN OUT to STOP...
  • Page 3 CONTROL PANEL POWER IN – Power ON OUT – Power OFF (Power Indicator Light will be on) Must be IN to program and start wash cycle Pushing the POWER button during the wash cycle cancels all programs...
  • Page 4 CONTROL PANEL UPPER WASH CYCLE When this cycle is selected, water is diverted to the upper wash arm only. Dishes must be on the upper rack only.
  • Page 5 CONTROL PANEL SELECT Use to select desired cycles Corresponding lights will light To select Push Select Button Hi-Temp Wash 1 time Heated dry 2 times Upper Wash 3 times Hi-temp wash and Heated Dry 4 times Hi-temp wash and Upper Wash 5 times Heated Dry and Upper Wash...
  • Page 6 CONTROL PANEL HI-TEMP WASH Boosts water temperature to 161-167 degrees F Will increase cycle time depending on temperature of incoming water...
  • Page 7 CONTROL PANEL DELAY Pressing the delay button sets the delayed start up to 9 hours. Delay time will be shown in window...
  • Page 8 CONTROL PANEL START / PAUSE Once cycle and options are selected, push START / PAUSE to begin cycle. Push again to PAUSE the cycle to open door. Pressing the POWER button cancels all preset options...
  • Page 9 CONTROL PANEL In the event of a water overflow or leak • the cycle will end • a drain cycle will be activated to drain tank • indicator lamps will flash • unit will shut off and not restart until water is removed from base pan...
  • Page 10 CONTROL PANEL Manual Control Dishwashers Power Indicator Lamp The POWER ON indicator lamp will remain on at the end of the cycle until: 1 – The timer is manually moved to the OFF position 2 – The POWER button on the left side of the control panel is pushed to the OFF position.
  • Page 11: Inner Door Panel

    INNER DOOR PANEL Rinse Aid Dispenser Detergent Dispenser (closed) Convection Dry Fan Cover Door Latch...
  • Page 12 DETERGENT CUP Pre-Wash Cup Rinse Aid Dispenser (cap off) Rinse Aid Dispenser setting Main Wash Detergent Cup...
  • Page 13 INNER DOOR PANEL Remove 6 Screws to remove outer door panel Remove 6 Screws to to drop control panel (remove outer door panel first)
  • Page 14: Inner Door

    INNER DOOR Detergent Dispenser Air Return Hose Condensation Tank Condensation Convection Dry Tank Drain Fan Motor Assembly...
  • Page 15: Solenoid Test

    DETERGENT CUP Solenoid Test Test Solenoid and check for actuation of door release and rinse aid plunger...
  • Page 16 DETERGENT CUP Removal Remove 6 Screws to remove detergent cup (Replace as a unit) Rinse Aid Dispenser activation solenoid Replace Dispenser unit as an assembly...
  • Page 17 CONVECTION DRY FAN Testing 32 ohms resistance Test at quick disconnect...
  • Page 18 CONVECTION DRY FAN Removal !! IMPORTANT !! Remove cover retaining screw...
  • Page 19 CONVECTION DRY FAN Removal !! CAUTION !! remove cover retaining screw shown on previous slide before attempting to remove cover Rotate Cover Clockwise Remove screws to release fan motor assembly...
  • Page 20 CONVECTION DRY FAN Removal ir to tank Condensation tank lifts out of retainers on door reinforcement bar Be certain O-Rings are in place when replacing motor...
  • Page 21: Control Panel Service

    CONTROL PANEL SERVICE The control can be dropped down for easy service by pulling the wiring harness out of the retainers on the condensation tank.
  • Page 22: Electronic Control

    CONTROL PANEL SERVICE Electronic Control Pry PC Board off of posts Remove 2 Screws...
  • Page 23 CONTROL PANEL SERVICE Electronic Control Connections Line In Heater Temperature Sensing Circuit Control Panel Operational – 120v Connections Selector Buttons Valve, Motors, etc except heater...
  • Page 24 CONTROL PANEL SERVICE Electronic Control Connections...
  • Page 25 CONTROL PANEL SERVICE Selector Buttons & Lamps Selector Buttons are egg shaped – be certain when replacing that switches work freely Selector Switches and Lamps...
  • Page 26: Door Latch Assembly

    CONTROL PANEL SERVICE Door Latch Assembly Door Latch Assembly in place Door Latch Removed for service...
  • Page 27: Door Latch Switch

    CONTROL PANEL SERVICE Door Latch Switch To Remove Switch, first remove this pin Note position of spring...
  • Page 28 CONTROL PANEL SERVICE Door Latch Switch Handle and Pin Switch goes in with connectors towed center of assembly The switch is Normally Closed...
  • Page 29: Door Latch Strike

    DOOR LATCH STRIKE Adjustment To adjust door you will need to pull the dishwasher out slightly to loosen and tighten screw and nut...
  • Page 30: Power Switch

    CONTROL PANEL SERVICE Power Switch Carefully pry knob off of shaft, protecting the face of the control panel with a soft cloth From behind knob, bend mounting fins in and push knob through control panel...
  • Page 31 CONTROL PANEL SERVICE Power Switch Switch OUT -- OFF Switch IN -- ON Closed Open Closed Open...
  • Page 32: Toe Kick Removal

    TOE KICK REMOVAL 1—Remove Outer Door Panel 2--Remove 2 screws above panel 3—Remove 2 screws below panel...
  • Page 33 MACHINE COMPARTMENT ACCESS Inserts pry out 1-Remove Screws 2-From Slot – pry panel out from both sides 3-Pull panel out...
  • Page 34: Machine Compartment

    MACHINE COMPARTMENT Wiring Temp sensing Heater Harness Thermistor connections Upper wash Heater Wash motor Fill Valve only valve thermostat and pump (at rear) Water level Tub over flow Overflow safety pressure switch switch and float Drain motor Bottom catch pan and pump...
  • Page 35 TANK OVERFILL Drain hose from The tank is fitted with an overfill overflow fitting fitting and drain hose. In the event of an overfill or excessive foaming, Cap and standpipe water will escape through a fitting located inside of in the bottom of the tank. This will tank raise the float and start a pump-out and shut-down procedure.
  • Page 36 TANK OVERFILL Pump Motor...
  • Page 37 FLOAT SAFETY SWITCH Remove Screw Float Body held in place with screws through bottom plate...
  • Page 38 FLOAT SAFETY SWITCH In the NC mode, the switch allows for normal fill and wash cycles. If the float senses water in the base pan, power bypasses the fill valve and activates through the pc board a drain and alarm cycle. The dishwasher will not restart until the float drops.
  • Page 39 WATER LEVEL PRESSURE SWITCH Pressure Switch Tubing Connection Principal of Operation The water level is controlled by a pressure switch located on the right side of the base and connected through a plastic tube to the water sump. This switch controls both the fill and drain cycles.
  • Page 40 WATER LEVEL PRESSURE SWITCH Push the body of the switch up then pull straight out of the keyhole slot...
  • Page 41 WATER LEVEL PRESSURE SWITCH Push the body of the switch up then pull straight out of the keyhole slot 3 NO 2 NC...
  • Page 42: Drain Pump

    DRAIN PUMP Drain Pump Assembly Motor and Pump Remove Screw Remove locking screw then rotate the pump towards you. It can then be slid back for service.
  • Page 43 DRAIN PUMP Be certain O-Ring is in place when replacing pump Pump motor can be tested without removing from sump housing...
  • Page 44: Heating Element

    HEATING ELEMENT Remove double nut with ground wire. Be certain to replace ground wire when replacing. The element should read approximately 12 to 15 ohms resistance.
  • Page 45 HEATING ELEMENT Be certain gasket is in place when replacing heater...
  • Page 46 HEATING ELEMENT THERMOSTAT Thermostat from Thermostat is at rear of tub inside of tank behind the heating element connections...
  • Page 47 HEATING ELEMENT THERMOSTAT Thermostat is normally closed. Opens at 185 F – 85 C Be certain to replace O-Ring below tub...
  • Page 48 FILL VALVE / SOLINOID Inside view The fill valve is accessed Backside view through the back panel. The dishwasher must be removed from the cabinet for this service. Fill valve water connection Electrical connection with cover removed...
  • Page 49 FILL VALVE / SOLINOID Valve Body is Metric Thread U.S. adaptor provided on valve when unpacked...
  • Page 50: Temperature Sensing Circuit

    TEMPERATURE SENSING CIRCUIT Remove retaining screw Control Board Temperature Sensing Circuit Release snap clip and pull mounting bracket back and down...
  • Page 51 TEMPERATURE SENSING CIRCUIT NTC Thermistor should read approximately 1100 ohms at 70 F NTC Thermistor resistance will drop as temperature rises NTC Thermistor...
  • Page 52: Pump And Motor Assembly

    PUMP AND MOTOR ASSEMBLY Pump and Motor Assembly replace as a unit The dishwasher must be removed from the cabinet for this operation.
  • Page 53 PUMP AND MOTOR ASSEMBLY Motor is a single direction capacitor start motor. Using Motor leads (not connector leads) Start Winding A = 25 ohms Run Winding M = 17 ohms (approximate readings)
  • Page 54 PUMP AND MOTOR ASSEMBLY Motor capacitor Motor wiring connector...
  • Page 55 UPPER WASH ONLY VALVE Some models are equipped with an upper wash only option. In this mode, a diverter valve diverts all water to the upper wash arm located on the bottom of the upper rack. Valve is solenoid operated and located on side of pump body...
  • Page 56 UPPER WASH ONLY VALVE When power is applied to the solenoid, the plunger pushes the lock spring outward allowing the diverter flap to open. The flap will be held open with water pressure from the pump and close automatically at the end of the cycle.
  • Page 57 UPPER WASH ONLY VALVE Ohmmeter test of the solenoid...
  • Page 58 SUMP HOUSING The filter and sump housing is removed by turning the retainer ring located in the bottom of the tank. Twist the clamp ring counter-clockwise to release. Remove the sump from the machine area.
  • Page 59: Lower Wash Arm

    LOWER WASH ARM inside of tank tank bottom machine compartment The lower wash arm is located directly above the pump. The fittings through the bottom of the tank are serviceable by removing the spray arm and riser and base...
  • Page 60: Troubleshooting

    TROUBLE SHOOTING Water Level Normal water level is shown by the arrow between the 2 lines. The tank is slightly tapered and the water will fill to this area.
  • Page 61 TROUBLE SHOOTING Control Panel Signals An automatic troubleshooting program is built into the control board to diagnose certain functions. Pots and Pans is flashing Door Latch Switch or And alarm is sounding Wiring Malfunction Pots and Pans, Normal and Light Low or No Water Fill Wash are flashing And alarm is sounding...
  • Page 62 TROUBLE SHOOTING Long Wash Times Incoming water should be at least 120 F If the incoming water is below that level, the heating element will be energized during the wash and rinse cycle until the temperature of the water reaches a preset level, depending on the option.
  • Page 63 THANK YOU www.haieramericasupport.com...