Haier DW12-TFE1 series User manual

DISHWASHER
2011 (Qingdao Haier Dishwasher Co.,Ltd)
DW12-TFE1
DW12-TFE2
DW1103S002V0

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Service Manual
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Contents
1. FEATURES................................................................................................................................3
2. HOW TO READ THIS SERVICE MANUAL............................................................................... 4
3. SAFETY PRECAUTION............................................................................................................5
3-1.AT TIME OF DELIVERY.............................................................................................................5
3-2. DURING INSTALLATION...........................................................................................................5
4. INSTALLATION.........................................................................................................................6
4-1. IF YOUR FAMILY INCLUDES CHILDREN...................................................................................... 6
4-2. IF A FAULT OCCURS................................................................................................................6
4-3. WHEN DISPOSING OF OLD APPLIANCES...................................................................................6
4-4. POSITIONING THE APPLIANCE.................................................................................................6
4-5. LEVELING THE APPLIANCE......................................................................................................7
4-6. COLD WATER CONNECTION....................................................................................................7
4-7. DRAIN HOSE CONNECTION.....................................................................................................7
4-8. ELECTRICAL CONNECTION.....................................................................................................8
4-9.DISSEMBLE AND ASSEMBLE.....................................................................................................8
5. PARTS AND FUNCTIONS ...................................................................................................... 20
5-1. CLOSE-UP VIEW (CONTROL PANEL).......................................................................................20
5-2. DISHWASHER INTERIOR .......................................................................................................20
6. HOW TO FILL THE SALT ....................................................................................................... 21
6-1. SALT...................................................................................................................................21
6-2. LOADING THE SALT INTO THE CONTAINER..............................................................................21
6-3.ADJUSTING SALT CONSUMPTION...........................................................................................21
7. HOW TO FILL RINSE AID AND DETERGENT DISPENSER................................................. 23
7-1. HOW TO FILL RINSE AID........................................................................................................23
7-2. HOW TO FILL DETERGENT DISPENSER...................................................................................23
8. LOADING THE DISHWASHER...............................................................................................24
8-1. HOW TO USE THE LOWER RACK............................................................................................24
8-2. HOW TO USE THE UPPER RACK.............................................................................................24
8-3. SHELF.................................................................................................................................24
9. TURNING ON THE APPLIANCE ............................................................................................25
9-1. SWITCHING THE DISHWASHER ON........................................................................................25
9-2. END OF PROGRAMME ..........................................................................................................25
Model No.DW12-TFE1 DW12-TFE2

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9-3. SWITCHING THE DISHWASHER OFF......................................................................................25
9-4. INTERRUPTING THE PROGRAMME .........................................................................................25
9-5. CANCELLING OR MODIFYING A CYCLE ...................................................................................26
9-6. 3IN1FUNCTION................................................................................................................... 26
9-7. RESET DRAIN FUNCTION ......................................................................................................27
10.WASH CYCLE TABLE ........................................................................................................... 28
11.FUNCTION SCHEDULE.........................................................................................................30
12. HOW TO KEEP YOUR DISHWASHER IN SHAPE............................................................... 31
12-1.AFTER EVERY WASH .........................................................................................................31
12-2. REMOVE THE PLUG............................................................................................................31
12-3. NO SOLVENTS OR ABRASIVE CLEANING PRODUCTS ............................................................31
12-4. MOVING THE APPLIANCE....................................................................................................31
12-5. SEALS...............................................................................................................................31
12-6. WHEN YOU GO ON HOLIDAY ..............................................................................................31
13. CLEAN AND MENTENANCE................................................................................................ 32
13-1. OVERALL CONDITION OF APPLIANCE ...................................................................................32
13-2. DISHWASHER SALT ............................................................................................................32
13-3. RINSE-AID.........................................................................................................................32
13-4. FILTERS ............................................................................................................................32
13-5. SPRAY ARMS .....................................................................................................................32
14. FAULT FINDING....................................................................................................................34
14-1. RESOLVING MINOR PROBLEMS YOURSELF...........................................................................34
14-2. PROBLEMS........................................................................................................................ 34
15. MAINTENANCE SERVICES AND TROUBLE SHOOTING.................................................. 38
15-1. MAINTENANCE SERVICES...................................................................................................38
15-2. TROUBLE SHOOTING..........................................................................................................38
16. ANALYSIS OF THE COMMON BREAKDOWNS.................................................................. 39
16-1. DOOR SWITCH TROUBLE ....................................................................................................39
16-2. WATER SUPPLY TROUBLE...................................................................................................40
16-3. DRAIN PUMP TROUBLE.......................................................................................................41
16-4. HEATING ELEMENT TROUBLE..............................................................................................42
16-5. WATER OVERFLOW TROUBLE .............................................................................................43
16-6. POWER SUPPLY TROUBLE..................................................................................................44
16-7. LEAK TROUBLE..................................................................................................................45
17. NET DIMENSION ..................................................................................................................46
18. TECHNICAL DATA................................................................................................................47
19. CIRCUIT DIAGRAM..............................................................................................................48

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1. Features
1-1. A grade for energy consumption of European standard.
1-2. A grade for washing efficiency of European standard.
1-3. A grade for drying efficiency of European standard.
1-4. Electronic control.
1-5. Water softener for descaling.
1-6. Super-capacity for 12 settings.
1-7. 3 in 1 function(DW12-TFE2).

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2. How to read this Service Manual
The symbol on the product or on its packaging indicates that this product may not be
treated as household waste. Instead it shall be handed over to the applicable collection point for
the recycling of electrical and electronic equipment. By ensuring this product is disposed of
correctly, you will help prevent potential negative consequences for the environment and human
health, which could otherwise be caused by inappropriate waste handling of this product.
For more detailed information about recycling of this product, please contact your local city office,
your household waste disposal service or the shop where you purchased the product.
Warning:
A “warning” is used when there is danger of personal injury.
Caution:
A “caution” is used when there is danger that the reader, through incorrect manipulation, may
damage equipment, loose data, get an unexpected result or has to restart (part of) a procedure.
Notice:
A “notice” provides information that is not indispensable, but may nevertheless be valuable to the
reader.

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3. Safety precaution
3-1. At time of delivery
Check packaging and dishwasher immediately for signs of transport damage. If the appliance is
damaged, do not put it into use but contact your supplier or customer service without delay.
Please dispose of packaging materials properly.
3-2. During installation
Site the dishwasher and connect it up in accordance with the installation instructions.
The dishwasher must not be connected to the electricity supply while installation is being carried
out.
Ensure that the domestic wiring is properly earthed.
The mains electricity supply must conform to the details shown on the dishwasher nameplate.
Do not connect the dishwasher to the electricity supply via an extension cable.
Built-under and built-in appliances should always be installed under a continuous work surface
which is attached to the adjacent cupboards, in order to ensure that the appliance is entirely
stable.
After the appliance has been installed, the mains plug should still be easily accessible.
Not on all models:
The plastic housing on the water inlet contains an electrically operated valve. The connecting
wires are inside the inlet hose. Do not cut through this hose and do not immerse the plastic
housing in water.
During installation, the power supply cord must not be excessively or dangerously bent or
flattened.
3-3.During normal use
The dishwasher must only be used by adults for the washing of household dishes and cooking
utensils.
This appliance cannot be installed outdoor, not even if the area in which it is installed is covered
by a roof; it is also very dangerous to leave it exposed to the rain and elements.
Do not place any heavy objects or stand on the door when it is open. The appliance could tip
forward.
The water inside the dishwasher is not suitable for drinking.
Do not use solvents of any kind inside your dishwasher. They could cause an explosion danger.
Open the door very carefully if the dishwasher is operating. There is a risk of water squirting out.
Do not touch the heating element during or after a wash cycle.
Fundamental rules to follow when using the appliance:
Never touch the dishwasher when barefoot or with wet hands or feet;
We discourage the use of extension cords and multiple sockets;
If the appliance is not operating properly or maintenance must be performed, disconnect the
appliance from the power supply.

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4. Installation
4-1. If your family includes children
The appliance is not intended for use by young children or infirm persons without supervision.
Young children should be supervised to ensure that they do not play with the appliance.
Keep detergents out of the reach of children, who must also be kept away from the dishwasher
when it is open.
4-2. If a fault occurs
If the appliance malfunctions, turn off water supply to the appliance and disconnect the plug from
the wall socket. Then, consult the section entitled, "Fault finding" .If you cannot solve the problem,
contact a service center.
Only specialized personnel are authorized to make repairs.
If the supply cord is damaged, it must be replaced by a special cord or assembly available from
the manufacturer or its service agent.
To maintain the EFFICIENCY and SAFETY of this appliance, we recommend:
call only the Service Centers authorized by the manufacturer.
always use original Spare Parts.
4-3. When disposing of old appliances
Appliances which are no longer being used must be made inoperable by cutting the power supply
cord and removing the door lock.
Take the appliance to a designated waste disposal center.
Dangerous voltage
Warning
Children could get locked in the appliance (risk of suffocation) or get stuck in other
positions.
Therefore: Remove the mains plug, cut the mains wire and set aside. Damage the door
lock so that the door can no longer be closed.
4-4. Positioning the appliance
Positioning the appliance in the desired location. The back should rest against the wall behind it,
and the sides, along the adjacent cabinets or wall. The dishwasher is equipped with water supply
and drain hoses that can be positioned to the right or the left to facilitate proper installation.

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4-5. Leveling the appliance
Once the appliance is positioned, adjust the feet (screwing them in or out) to adjust the
dishwasher, making it level. In any case, the appliance should not be inclined more than 2°. If the
appliance is level, it will help ensure proper performance.
4-6. Cold water connection
Connect the water supply hose to a threaded 3/4 (gas) connector, making
sure that it is fastened tightly in place (see fig.A).
Some models are fitted with an "Aquastop" water supply hose (see fig.B)
in which the small filter is already housed in the threaded end.
If the water pipes are new or have not been used for an extended period
of time, let the water run to make sure that the water is clear and free of
impurities. If this precaution is not taken, there is a risk that the water inlet
can get blocked and damage the appliance.
Warning
The appliance is to be connected to the water mains using new hose-sets and that old
hose-sets should not be reused.
4-7. Drain hose connection
Insert the drain hose into a drain pipe with a minimum diameter of 4cm, or let it run into the sink,
making sure to avoid bending or crimping it. If necessary, fit a syphon trap (U-bend) with a
connecting piece for the drain hose (fig.C). The free end of the hose must be at a height between
40 and 100 cm and must not be immersed in water.
Attention:
The connecting piece for syphon trap (U-bend) must be securely fastened to the wall to
prevent the drain hose from moving and allowing water to spill outside the drain.
fig.A
fig.B
fig.C
MAX 100 cm
MIN 40 cm

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4-8. Electrical Connection
After making sure that the voltage and frequency values for the current in the home correspond to
those on the rating plate (located on the stainless steel inner door of the appliance) and that the
electrical system is correct for the maximum voltage on the rating plate, insert the plug into an
electrical socket which is earthed properly (the earthing of the appliance is a safety requirement
mandated by law).
If the electrical socket to which the appliance must be connected is not appropriate for the plug,
replace the whole cable, rather than using adaptors or the like as they could cause overheating
and burns.
Caution:
The dishwasher plug must be accessible even when the appliance is installed as a built-in
unit so that maintenance can be done safely.
4-9.Dissemble and assemble
4-9-1. Tools
Screwdriver
Dissemble and assemble for dishwasher
components
Cross-screwdriver
Dissemble and assemble for dishwasher
components
Blade
Unpacking
Electric drill
Drill holes while installation
Spanner
Combine the inlet hose

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Multimeter Used for measuring the PCB and Display
board
Soldering iron
Used for Jointing the PCB and Display
board
Pliers
Used for removing the pipe hoop and
clips

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4-9. Dissemble and assemble procedure
4-9-1.Water pressure switch disassembly
Water pressure switch locates in the
behind of the tub on the right and is fixed in
straight pole.
Put the guiding groove up until to the top
which is ringent.
Press the wedge of the water pressure
switch until it comes out of slot with hands.

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Press the pinchcock at full tilt with your
hands and then pull the pipe out.
With stand the raised parts of the 1/4S
quick connect termianl with thumb and then
pull it out.
Change the old water pressure switch into a
new one.
Insert cable line in, connection method is
just like the picture on the left.

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Connection method: there are several
corresponding number marks on the
component at the position of 1,2,3 showing
on the left picture.
Connect the pipe together. Attention: pipe
must be put on the interspaces between
vent hole and the tub.
Put the pressure switch wedge into the
large ringent slot part and then push it
until to the slot bottom.
Put the pipe to the smaller ringent place of
its bottom and then the installation is
completed.

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4-9-2.Detergent dispenser disassembly
Open the door, disassemble the outer door
(Accord to the disassembly step)
Close the door, use screwdriver to drive the
6 screws of Detergent Dispenser off, pull
the wire out, then open the door, and get
the Detergent Dispenser off.
4-9-3.Baseboard disassembly
Lie the machine down, use ross-screwdriver
to drive two screws on baseboard off
Use screwdriver to push the baseboard off
the support foot, don’t put big force to avoid
break the stator.

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4-9-4.Left/right side plate and baseboard disassembly
Disassemble the baseboard(Pls find the pic
of baseboard)
Use cross-screwdriver to drive two screws
off the side panel
4-9-5 Side panel disassembly
Disassemble the Complete top(pls follow
the disassembly step), use the
cross-screwdriver to drive two screws which
are on left top of machine, off side panel

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Use the cross-screwdriver to drive five
screws which are in left back of machine, off
the right side panel
Open the door, use the cross-screwdriver to
drive four screws which are in left front, off

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4-9-6 Sump disassembly
Disassembly the drain pump refer to with
the way required for the drain pump.
Disassembly the wash pump refer to with
the way required for the wash pump.
Remove the rubber pipe of the sump
Remove the transparent pipe of the water
level switch.

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Disassembly the temperature sensor with
black plastic bracket
screw the Ring nut for sump fastening out
with an anticlockwise way .
Sump are dissembled completly

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4-9-7. Water softer disassembly
Lay the dishwasher on the floor, then
remove the bottom cover, pull out the
connector of the salt adding valve and the
low salt switch
Remove the three clips for fixing the rubber
connect pipe, then pull out the rubber pipe
Open the out door, you can see the salt
adding cover, then circumrotate the cover
anticlockwise and screw it down.
Circumrotate the fixing set of the water
softer anticlockwise, then screw id
down(you can use the disassembly tool to
operate)
Then take the water softer down
accordingly.

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4-9-8.Heater disassembly
Remove the two self-drilling bolts for fixing
the heater bracket from the middle bar, then
remove the heater.
Pull out the three connector of the heater.
Remove the pipe hoop.
Remove the connector pipe of the hot pump
and the middle hot pump ,then can take the
heater down.