Bush DW12-TFE3 User manual

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SERVICE MANUAL
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Order No.REF0905S001V0
DISHWASHER
ModelNo.DW12-TFE3Series
Customer helpline: 0845 600 4632

Page 1 of 49
Service Manual
Model No: DW12-TFE3 Series
Issue
Rev.
1-1. Contents
1-1. Contents....................................................................................................................................................1
1-2. Features....................................................................................................................................................4
1‐2‐1.AgradeforenergyconsumptionofEuropeanstandard......................................................................4
1‐2‐2.AgradeforwashingefficiencyofEuropeanstandard..........................................................................4
1‐2‐3.AgradefordryingefficiencyofEuropeanstandard.............................................................................4
1‐2‐4.Electroniccontrol,3in1function.........................................................................................................4
1‐2‐5.Watersoftenerfordescaling................................................................................................................4
1‐2‐6.Super‐capacityfor12settings...............................................................................................................4
1-3. How to read this Service Manual........................................................................................................5
1-4. Safety Precaution...................................................................................................................................6
1‐4‐1.Attimeofdelivery.................................................................................................................................6
1‐4‐2.Duringinstallation.................................................................................................................................6
1‐4‐3.Duringnormaluse.................................................................................................................................6
1-5. Installation................................................................................................................................................7
1‐5‐1.Ifyourfamilyincludeschildren.............................................................................................................7
1‐5‐2.Ifafaultoccurs......................................................................................................................................7
1‐5‐3.Whendisposingofoldappliances........................................................................................................7
1‐5‐4.Positioningtheappliance......................................................................................................................7
1‐5‐5.Levelingtheappliance...........................................................................................................................7
1‐5‐6.Coldwaterconnection..........................................................................................................................7
1‐5‐7.HotWaterConnection..........................................................................................................................8
1‐5‐8.ElectricalConnection............................................................................................................................8
1‐5‐9.Drainhoseconnection..........................................................................................................................9
1-6.Tools.........................................................................................................................................................10
1-7. Dissemble and assemble procedure...............................................................................................12
1‐7‐1.Waterpressureswitchdisassembly....................................................................................................12
1‐7‐2.Detergentdispenserdisassembly.......................................................................................................15
1‐7‐3.Baseboarddisassembly.......................................................................................................................15
1‐7‐4.Left/rightsideplateandbaseboarddisassembly...............................................................................16
1‐7‐5.Sidepaneldisassembly.......................................................................................................................16
1‐7‐6.Sumpdisassembly...............................................................................................................................17
1‐7‐7.Watersofterdisassembly...................................................................................................................19
1‐7‐8.Heaterdisassembly.............................................................................................................................20
1-8. Parts and Functions.............................................................................................................................22
1‐8‐1.Close‐upview(controlpanel).............................................................................................................22
1‐8‐2.Dishwasherinterior.............................................................................................................................22
1-9. How to fill the salt.................................................................................................................................23
1‐9‐1.Salt.......................................................................................................................................................23
1‐9‐2.Loadingthesaltintothecontainer.....................................................................................................23
1‐9‐3.Adjustingsaltconsumption.................................................................................................................23
1-10. How to fill rinse aid and detergent dispenser.............................................................................25
1‐10‐1.Howtofillrinseaid...........................................................................................................................25

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1‐10‐2.Howtofilldetergentdispenser........................................................................................................25
1-11. Loading the dishwasher...................................................................................................................26
1‐11‐1.Howtousethelowerrack................................................................................................................26
1‐11‐2.Howtousetheupperrack................................................................................................................26
1‐11‐3.Shelf...................................................................................................................................................27
1-12. Turning on the Appliance.................................................................................................................28
1‐12‐1.SwitchingthedishwasherON...........................................................................................................28
1‐12‐2.Endofprogramme............................................................................................................................28
1‐12‐3.SwitchingthedishwasherOFF..........................................................................................................28
1‐12‐4.Interruptingtheprogramme.............................................................................................................28
1‐12‐5.Delayedstartprogramming..............................................................................................................29
1‐12‐6.CancellingorChangingaprogramme...............................................................................................29
1‐12‐7.3in1function...................................................................................................................................29
1‐12‐8.Resetdrainfunction..........................................................................................................................30
1-13.Wash Cycle Table................................................................................................................................31
1-14. Function Schedule.............................................................................................................................33
1‐14‐1.Intensivewash..................................................................................................................................33
1‐14‐2.Normalwash.....................................................................................................................................33
1‐14‐3.Lightwash.........................................................................................................................................33
1‐14‐4.Glasswash.........................................................................................................................................33
1‐14‐5.Rapidwash........................................................................................................................................33
1‐14‐6.Heat...................................................................................................................................................33
1‐14‐7.Soak...................................................................................................................................................33
1-15. How to keep your dishwasher in shape.......................................................................................34
1‐15‐1.AfterEveryWash..............................................................................................................................34
1‐15‐2.Removetheplug...............................................................................................................................34
1‐15‐3.NosolventsorAbrasiveCleaningProducts......................................................................................34
1‐15‐4.MovingtheAppliance.......................................................................................................................34
1‐15‐5.Seals..................................................................................................................................................34
1‐15‐6.WhenYouGoonHoliday..................................................................................................................34
1-16. Clean and mentenance.....................................................................................................................35
1‐16‐1.Overallconditionofappliance..........................................................................................................35
1‐16‐2.Dishwashersalt.................................................................................................................................35
1‐16‐3.Filters.................................................................................................................................................35
1‐16‐4.Sprayarms.........................................................................................................................................35
1-17. Maintenance Services and Trouble Shooting.............................................................................36
1‐17‐1.Maintenanceservices.......................................................................................................................36
1‐17‐2.Troubleshooting...............................................................................................................................36
1-18. Analysis of the common breakdowns..........................................................................................40
1‐18‐1.Doorswitchtrouble..........................................................................................................................40
1‐18‐2.Watersupplytrouble........................................................................................................................41
1‐18‐3.Drainpumptrouble...........................................................................................................................42
1‐18‐4.Heatingelementtrouble...................................................................................................................43
1‐18‐5.Wateroverflowtrouble....................................................................................................................44

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1‐18‐6.Powersupplytrouble........................................................................................................................45
1‐18‐7.Leaktrouble......................................................................................................................................46
1-19. Technical data.....................................................................................................................................47
1-20. Circuit Diagram...................................................................................................................................48

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Model No: DW12-TFE3 Series
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1-2. Features
1-2-1. A grade for energy consumption of European standard
1-2-2. A grade for washing efficiency of European standard
1-2-3. A grade for drying efficiency of European standard
1-2-4. Electronic control, 3 in 1 function
1-2-5. Water softener for descaling
1-2-6. Super-capacity for 12 settings

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1-3. 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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1-4. Safety Precaution
NOTICE
Carefully read the instructions contained in this manual, as they provide important information which
is essential to safe and proper installation, use and maintenance of the appliance.
This appliance complies with the following EEC directives:
- 73/23/EEC of 19/02/73 (Low Voltage) and subsequent modifications;
- 89/336/EEC of 03/05/89 (Electromagnetic Compatibility) and subsequent
modifications.
1-4-1. 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.
1-4-2. 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.
1-4-3. 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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1-5. Installation
1-5-1. 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.
1-5-2. 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.
1-5-3. 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.
1-5-4. 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.
1-5-5. 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.
1-5-6. Cold water connection
Connect the water supply hose to a threaded 3/4 (gas) connector, making sure that it is fastened
tightly in place.
If the water pipes are new or have not been used for an extended period of time, let the water run to

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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.
1-5-7. Hot Water Connection
The water supply to the appliance can also be connected to the house's hot water line (centralised
system, heating system), as long as it does not exceed a temperature of 60℃.
In this case, the wash cycle time will be shortened by about 15 minutes and the wash efficiency
slightly reduced.
The connection must be made to the hot water line following the same procedures as those for the
connection to the cold water line.
Attention:
The special plastic hose support must be solidly fastened to the wall to prevent the drain hose from
moving and allowing water to spill outside the drain.
Warning
The appliance is to be connected to the water mains using new hose-sets and that old
hose-sets should not be reused.
1-5-8. 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.

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1-5-9. 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.