Haier UNDERCOUNTER DISHWASHER Training Presentation Download Page 61

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TROUBLE SHOOTING

Control Panel Signals

An automatic troubleshooting program is built into

the control board to diagnose certain functions.

Pots and Pans is flashing

And alarm is sounding

Door Latch Switch or

Wiring Malfunction

Pots and Pans, Normal and Light

Wash are flashing

And alarm is sounding

Low or No Water Fill

Water Overflow Into Base Pan

Pots and Pans, Light Wash and

Rinse and Hold are flashing

And alarm is sounding

Water Not Draining

Pots and Pans, Light Wash,

Normal and Rinse and Hold

are flashing

And alarm is sounding

Summary of Contents for UNDERCOUNTER DISHWASHER

Page 1: ...HAIER UNDERCOUNTER DISHWASHER Training Presentation ...

Page 2: ...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: ...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 6 times Hi temp Wash Heated Dry Upper Wash 7 times SELECT Use to select desired cycles Corresponding lights will light ...

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: ...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: ...he POWER ON indicator lamp will remain on at the end of the cycle until 1 The timer is manually moved to the OFF position Or 2 The POWER button on the left side of the control panel is pushed to the OFF position Manual Control Dishwashers ...

Page 11: ...INNER DOOR PANEL Rinse Aid Dispenser Detergent Dispenser closed Door Latch Convection Dry Fan Cover ...

Page 12: ...DETERGENT CUP Main Wash Detergent Cup Rinse Aid Dispenser setting Rinse Aid Dispenser cap off Pre Wash Cup ...

Page 13: ...INNER DOOR PANEL Remove 6 Screws to to drop control panel remove outer door panel first Remove 6 Screws to remove outer door panel ...

Page 14: ...Detergent Dispenser Air Return Hose Condensation Tank Condensation Tank Drain Convection Dry Fan Motor Assembly INNER DOOR ...

Page 15: ...DETERGENT CUP Solenoid Test Test Solenoid and check for actuation of door release and rinse aid plunger ...

Page 16: ...DETERGENT CUP Removal Rinse Aid Dispenser activation solenoid Remove 6 Screws to remove detergent cup Replace as a unit 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 Rotate Cover Clockwise Remove screws to release fan motor assembly CAUTION remove cover retaining screw shown on previous slide before attempting to remove cover ...

Page 20: ...CONVECTION DRY FAN Removal Condensation tank lifts out of retainers on door reinforcement bar ir to tank Be certain O Rings are in place when replacing motor ...

Page 21: ...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: ...CONTROL PANEL SERVICE Electronic Control Remove 2 Screws Pry PC Board off of posts ...

Page 23: ...CONTROL PANEL SERVICE Electronic Control Connections Temperature Sensing Circuit Line In Heater Control Panel Selector Buttons Operational 120v Connections 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: ...CONTROL PANEL SERVICE Door Latch Assembly Door Latch Assembly in place Door Latch Removed for service ...

Page 27: ...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 Adjustment To adjust door you will need to pull the dishwasher out slightly to loosen and tighten screw and nut ...

Page 30: ...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 ON Open Closed OFF Open Closed ...

Page 32: ...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 1 Remove Screws 2 From Slot pry panel out from both sides 3 Pull panel out Inserts pry out ...

Page 34: ...Drain motor and pump Water level pressure switch Bottom catch pan Overflow safety switch and float Wash motor and pump Wiring Harness Fill Valve Heater connections Temp sensing Thermistor Upper wash only valve Heater thermostat at rear ...

Page 35: ... fitted with an overfill fitting and drain hose In the event of an overfill or excessive foaming water will escape through a fitting in the bottom of the tank This will raise the float and start a pump out and shut down procedure Once water is removed from the base pan the dishwasher can be restarted ...

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: ... 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: ...ter 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 The tubing is routed over a vent located behind the right side panel and accessed by removing the panel ...

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 1 3 NO 1 2 NC ...

Page 42: ...DRAIN PUMP Remove Screw Drain Pump Assembly Motor and Pump 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 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 is at rear of tub behind the heating element connections Thermostat from inside of tank ...

Page 47: ...HEATING ELEMENT THERMOSTAT Thermostat is normally closed Opens at 185 F 85 C Be certain to replace O Ring below tub o o ...

Page 48: ... is accessed through the back panel The dishwasher must be removed from the cabinet for this service Fill valve water connection Backside view Electrical connection with cover removed FILL VALVE SOLINOID Inside view ...

Page 49: ...FILL VALVE SOLINOID Valve Body is Metric Thread U S adaptor provided on valve when unpacked ...

Page 50: ...Remove retaining screw Release snap clip and pull mounting bracket back and down Control Board Temperature Sensing Circuit TEMPERATURE SENSING CIRCUIT ...

Page 51: ...TEMPERATURE SENSING CIRCUIT NTC Thermistor should read approximately 1100 ohms at 70 F NTC Thermistor resistance will drop as temperature rises o NTC Thermistor ...

Page 52: ...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 wiring connector Motor capacitor ...

Page 55: ...alve is solenoid operated and located on side of pump body 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 ...

Page 56: ...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: ...H ARM machine compartment inside of tank tank bottom 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: ...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: ...And alarm is sounding Door Latch Switch or Wiring Malfunction Pots and Pans Normal and Light Wash are flashing And alarm is sounding Low or No Water Fill Water Overflow Into Base Pan Pots and Pans Light Wash and Rinse and Hold are flashing And alarm is sounding Water Not Draining Pots and Pans Light Wash Normal and Rinse and Hold are flashing And alarm is sounding ...

Page 62: ...eating element will be energized during the wash and rinse cycle until the temperature of the water reaches a preset level depending on the option The cycle will be extended for the period of time that the heating element is on The heater will draw approximately 10 5 amps and can be checked for operation with an amp probe ...

Page 63: ...www haieramericasupport com THANK YOU ...

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Haier UNDERCOUNTER DISHWASHER, Training Presentation

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