Hotpoint Ultima Electronics - Indesit...

InformationIndesit Compa

© 2006 Reg. Office: Peterborough PE2 9

Service

5412771 Issue 2 Aug. 2006

HotpointUltima

FreestandingDishwasherswith Bit100Electronics

Models Covered:-

FDW80FDW85

Note:Models produced after June 2006 with DEA600 Electronics see Manual 5407345

ny UK LtdJB. Registered in London: 106725

SAFETY NOTES & GENERAL SERVICING ADVICE

1. This manual is NOT intended as a comprehensive repair/maintenance guide to the appliance.2. It should ONLY be used by suitably qualified persons having technical competence applicable

product knowledge and suitable tools and test equipment.3. Servicing of electrical appliances must be undertaken with the appliance disconnected (unplugged)

from the electrical supply.4. Servicing must be preceded by Earth Continuity and Insulation Resistance checks.5. Personal safety precautions must be taken to protect against accidents caused by sharp edges on

metal and plastic parts.6. After Servicing the appliance must be rechecked for Electrical Safety. In the case of appliances which

are connected to a water supply (i.e.: Washing Machines, Dishwashers & Food Centres etc.) checks must be made for leaks from seals gaskets and pipe work and rectification carried out where necessary.

7. It can be dangerous to attempt ‘DIY’ repairs / maintenance on complex equipment and the Company recommends that any problem with the appliance is referred to its own Service Organisation.

8. Whilst the Company has endeavoured to ensure the accuracy of the data within this publication they cannot hold themselves responsible for any inconvenience or loss occasioned by any error within.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

SERIAL NUMBER / INDUSTRIAL CODE EXPLANATION

Serial Number 9 10 02 0895 - exampleFirst digit = Year of manufacture - 1999Second two digits = Month of manufacture - OctoberThird two digits = Day of manufacture - 2ndFourth - remaining digits = Build Number that day appliance number - 895

Code 37 24455 0010 - exampleFirst two digits = factory of originSecond five digits = COMMERCIAL CODE

- vital for correct model information and system identificationLast four digits = 0000 original production.

other numbers denote major production changes

INDEXSafety Notes & General Servicing Advice . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Technical Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Water Hardness Table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5Console Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6Programme Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Component Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 - 14Installation Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15Servicing & Dismantling Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . 16 - 19Fault Codes & Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 - 22Test Programme . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 - 24Sequence Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 - 26Wiring Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

2

TECHNICAL SPECIFICATIONSGeneral Model Colour Commercial Code

FDW80 P - Polar White 33187FDW80 T - Sandstone 33188FDW80 G - Graphite 33189FDW85 A - Aluminium 33190

Country of Origin ItalyEnergy Class AWashing Class ADrying Class ANoise Level 46 dBDimensions Height 850 mm

Width 595 mmDepth 570 mmWeight 46 kg

Capacity 12 place settingsElectrical Supply 230/240 Volts AC @ 50HzEnergy Consumption 2.15 kW Drying Condenser Turbo Drying (before Serial Number 50214.0000)Controls Electronic 100 bit with Relays for Heater & Circulation MotorTub Stainless SteelHeater Flow through type with built in safety cut outWattage 2 kW @ 230VResistance 26.50ΩCirculation Motor Capacitor Run Induction MotorRPM 2800 Power Consumption 45 WattsStart Winding Resistance 67ΩRun Winding Resistance 94 ΩCapacitor 5 uFDetergent Dispenser Capacity 25 g + 5gRinse Aid Dispenser Capacity 140 mlWater Softener Salt Capacity 2 kgStandard cycle water consumption 18 LitresStandard cycle energy consumption 1.05 kW/hStandard Cycle Time 120 minutes approximatelyFill Valve Resistance 4 KΩRegeneration Valve 3.7 KΩDrain Pump Plaset Motor SynchronousMotor Winding Resistance: 200ΩPower Consumption: 28 WattsAlternating Wash Valve Motorised Diverter ValveThermistor Door MountedIndicator Lamps Mains On/Off, Low Rinse Aid, Programme, Extra Dry,

Wash Progress, Delay, Low Salt, Half Load, Water LeakWash Programmes 8Wash Temperatures 40°C, 45°C, 50°C, 55°C, 60°C, 65°C, 70°C

3

GENERAL INFORMATION

All models are freestanding dishwashers, they provide a choice of 8 wash programmes to suit load requirements.An LED display control unit allows the selection of the wash programmes, time delay, extra dry and half load. The display indicates, with the use of symbols, the selected programme, the progress of the programme, if the time delay and half load options have been selected. The appropriate symbol will also be displayed.Programme time left, low salt and rinse aid symbols are also shown on the display. If the machine detects a water leak in the base panel, this is also indicated on the display.

All programmes are selected by pressing the programme button (P). This selects the appropriate programme symbol on the LCD display. Once selected, pressing the Start/Reset button will start the programme.The selected programme can be cancelled at any time by pressing and holding the Start/Reset button. After 5 seconds a long beep will be heard followed by 3 short beeps. The programme will reset and a new programme can be selected.

The Mode button (M) on the console scrolls between the duo wash, time delay, extra dry and half load options. Once the desired option symbol has been selected, pressing the Select button (S) will enable the various settings of that function to be selected.

The Time Delay option can delay the start of the programme by up to 24 hours.The Half Load option allows dishes to be washed in either the upper or lower basket.Drying is achieved with a fan and condenser system (before Serial Number 50214.0000).Drying takes between 20 to 30 minutes depending on the programme selected.If Extra Dry has been selected, this increases the final rinse water temperature by 3°C and adds 5 minutes of residual drying.Two short beeps and 'END' flashing in the LCD display indicate the end of the programme.

The salt refill indicator utilises a counter system which is achieved by the control module counting the operations of the regeneration valve. It does not detect the presence of salt within the softener unit.

These dishwashers have features enabling a more efficient wash process.A turbidity sensor identifies the soil level of the dishes. The sensor modifies the wash time and temperature depending on the soil level of the pre-rinse water.An alternating wash valve connected to the circulation motor controls how water is delivered to the spray arms, giving a more efficient wash.A filter cleaning programme is incorporated that should blocked filters be detected, then a special programme is run to clean the filters. This feature only applies to the Intensive, Normal and Eco wash programmes and may extend the programme time by up to 40 minutes.A more detailed explanation can be found in the component description section of this manual.

Water hardness is adjusted by removing the salt container cap, and turning the arrowed adjuster towards the + or - minus indicator as required.

NOTE: -This manual covers models with Bit100 Electronics. From June 2006 DEA600 Electronics were used. Refer to manual 5407345.

4

WATER HARDNESS TABLE

Water Hardness

Clarke Degrees °fH mmol/l Selector

PositionSalt

Consumption(grams/cycle)

Salt Doses per 2 kg

0 - 14 0 - 17 0 - 1.7 / 0 /

14 - 36 18 - 44 1.8 - 4.4 '-' 20 60

36 - 71 45 - 89 4.5 - 8.9 MED 40 40

> 71 > 89 > 8.9 '+' 60 25

Water Hardness is adjusted by removing the salt container cap and turning the arrowhead adjuster towards the + or - indicators as required.

Note: - The Low Salt warning lamp is triggered by a counter system. If the Low Salt lamp stays on see page 10.

5

CONSOLE PANEL

A. On/Off Button DisplayPress this button to turn the display on.B. DisplayDisplays the functions in progressC. Door Opening HandleUse the handle to open the door.D. Start/Reset ButtonWith Start, the wash cycle begins, whereas all the

settings are cleared with Reset.E. Auto Duo-Wash Indicator LightTo remind that the Duo-Wash cycle has been set.F. Delayed Start Indicator LightThis indicates that delayed start has been set.G. Extra Drying Indicator LightTo indicate that Extra Drying has been set.H. Cycle Phase Indicator LightsPre-Wash, Wash, Rinses, Drying.I. Wash Cycle SymbolsA wide range of wash cycles to choose from.L. Multifunction Numeric IndicatorInforms of the duration of the cycle, the amount of

time left to wait and any error codes.

M. Model ButtonPressing this button selects the Auto

Duo-Wash cycle, the Delayed Start, the Extra Drying and the Half Load.

N. Basket IndicatorShows which basket has been selected for the

Half Load.P. Cycle Select ButtonPressing this button selects the desired cycle.Q. Water Leak Indicator LightTo warn of a water leak.S. Selection ButtonPressing this button selects the following

functions: Delayed Start, Extra Drying, Basket Selection.

T. Low Salt Indicator LightThis light indicates that it is time to add more

salt.U. Low Rinse aid Indicator LightThis light indicated that it is time to add more

rinse aid.

I

E

F

G

N

H

T UL Q

6

PROGRAMME GUIDE

Cycle Cycle Selection Instructions

CycleDescription

Detergent for

Pre-Wash& Wash

RinseAid

Wash Cycle Duration - Mins(without extra

drying)

Intensive Very dirty dishes and pans (not to be used for delicate items)

Pre-wash with hot water at 40°CExtended wash at 65°2 cold rinsesHot rinse at 65°CDrying

5 + 25 g * 120

Normal Cycle for normally dirty pans and dishes.Standard daily cycle

Wash at 55°CCold rinseHot rinse at 70°CDrying

30 g * 72

Eco Environmentally friendly cycle with low energy consumption levels, suitable for normally dirty pans and dishes

2 cold pre-washesExtended wash at 45°CHot rinse at 65°CDrying

5 + 25 g * 120

FastEconomic and fast cycle to be used for slightly dirty dishes.Run cycle immediately after use.Without drying except when the extra drying option has been selected.

Short wash at 40°CHot rinse at 62°C

25 g *(withextra

drying)

25

Pre-Wash Preliminary wash cycle for dishes while awaiting completion of the load with the dishes from the next meal.

Short cold wash to prevent food drying onto the dishes

- - 12

Delicates Special cycle to be used for more delicate items which are sensitive to high temperatures.Run cycle immediately after use

Wash at 50°CRinse at 45°CHot rinse at 65°CDrying

25 g * 96

Special Guest

Rinse and drying cycle for dishes that are seldom used and are only dusty.

Hot rinse at 65°CDrying

- * 36

OPTIONAL WASH CYCLE

AutoDuo-Wash

Wash differentiated on the two racks.Delicate for glassware and glasses on the upper rack and heavy duty for the pans on the lower rack.

Cold Pre-WashWash at 50°CLukewarm rinse at 45°CHot rinse at 65°CDrying

5 + 25g * 108

7

COMPONENT DESCRIPTIONFill ValveThe appliance has an electromagnetically operated solenoid valve, which is connected to the water supply. As the machine fills, a quantity of water is diverted into the fill tank for later use in the regeneration sequence. A typical fill sequence is as follows:The water turbine fills the dishwasher with 2 litres of water. If the pressure switch contacts are then closed, then the turbine fills with another 2 litres of water to complete the fill. If, after the initial 2 litre fill, the pressure switch contacts are still open, the dishwasher will fill to a maximum of 6 litres.This initialises the filter cleaning procedure.Pressure SwitchThe pressure switch controls the overall volume of water inside the tub and signals if the heater can be turned on.Anti Flood DeviceConsisting of a polystyrene float and microswitch. An excess of water in the base panel operates the float switch sending a signal to the control module operating the drain pump and displaying a fault code on the console.Control ModuleMounted on the console, this is an electronic device that monitors and controls all devices within the appliance.Water TurbineConsisting of a fixed reed switch and a magnet fitted to an impeller. Unlike previous control systems, water fill is no longer dependant on the operation of the pressure switch. The turbine generates a series of impulses as the water rotates the impeller vanes.The control module translates these impulses into litres of fill water (217 impulses is equal to 1 litre of water). The turbine also regulates the maximum amount of water that can enter the tub, therefore acting as an overflow device. If the turbine fills the dishwasher with 2 litres of water and the pressure switch contacts are open, the pressure switch alarm is activated. If the turbine is faulty, then the pressure switch will control the fill. However, at the end of the cycle, the turbine faulty alarm will be displayed.Detergent & Rinse Aid DispenserDetergent and rinse aid is automatically released during the programme.The release mechanism is activated by means of a solenoid. This in turn operates a plunger and lever assembly, thus releasing detergent or rinse aid as required.Circulation Pump MotorThe motor used is a capacitor run motor. The pump housing is bolted to the motor body with the stainless steel shaft passing through a face seal in the pump with the pump impeller, with a ceramic seal counterface, mounted directly on the shaft.Drain PumpThis is a separate unit fixed to the sump moulding. It is operated by means of a synchronous motor and is controlled by the control module.HeaterThe heater is encased in a metal housing with integral safety cut-out, attached via hoses to the sump and the circulation motor.ThermistorSituated on the inner door panel adjacent to the dispenser. A temperature rise in the water is converted to a changing resistance value.A rise in temperature will give a lower resistance across the terminals of the thermistor; the control module monitors this value and when it is the same as that as defined in the programme selected, the module will advance the programme out of the heating stage.

8

Turbidity SensorSituated in the hose between the circulation motor and heater. It consists of an infrared transmitter and receiver and it has two function within the dishwasher, identifying the soil level and the presence of rinse aid. The analogue value it produces is sent to the control module for processing.During a cycle, e.g. the Pre-rinse, the soil level is measured with the circulation motor running.Dependent on the soil level determined by the turbidity sensor, the control module alters the cycle by reducing or increasing cycle times and temperatures of the subsequent stages. the sensor is calibrated from 0 (dirty water) to 245 (clean water). This is then converted to 10 different soil levels. The maximum turbidity level is equivalent to the longest cycle while the clearest reading corresponds to the shortest cycle. If the turbidity sensor detects the pre-rinse water still below a predefined level, it will perform another pre-rinse.The table below shows how the water turbidity affects the programme times and wash temperature.

Alternating Wash ValveThe alternating wash valve is fitted to the circulation motor pump housing. It consists of a vane and a small motor and controls how the water is delivered to the spray arms. The vane acts as a gate within the pump volute and is moved by the motor as required by the control module. Water is then pumped to the upper and/or lower spray arms depending on the programme selected or step within that programme.The three possible positions of the valve and how the water is delivered to the spray arms are shown below:

At the beginning of each programme, the machine will find the correct position by resetting the system. This also serves to avoid starting in the wrong position.

Turbidity Value

Place Settings

1stPre-rinse

2ndPre-rinse

Max. Wash Temp. Wash Max.

Temp. Hot Rinse

245 1 10 mins No 40°C 8 mins 63°C 20 mins

2 10 mins No 45°C 11 mins 63°C 20 mins




6 10 mins 6 48°C 22 mins 63°C 25 mins

7 10 mins 10 mins 48°C 27 mins 63°C 25 mins



0 From 10 to 12 10 mins 16 mins 48°C 32 mins 63°C 30 mins

Valve Position Spray ArmsPosition 0 Upper and lower togetherPosition 1 One minute on the upper and two minutes on the lowerPosition 2 Three minutes on the lower and one minute on the upper

9

Turbo Dry Fan & Condenser - Fitted to models before Serial Number 50214.0000Mounted on the right hand side of the dishwasher, consisting of a condenser and fan. The fan creates a vacuum in the condensation chamber by sucking dry air (30% RH) from the side of the dishwasher and moist air (100%RH) from inside the dishwasher tub. As the two airflows meet, condensation is formed and falls to the bottom of the condenser. This is drained into the sump via a hose and finally is pumped away by the drain pump. The remaining air mix (55% RH) is vented near the top of the dishwasher.NOTE: - Models after Serial Number 50214.0000 use a Residual Heat Drying process.

Salt Refill Warning IndicatorSituated on the console, indicates when illuminated that the salt container requires refilling. When the salt container is filled for the first time it requires 1.5 - 2.0 kg of salt to be added. The warning light will stay illuminated for the first 5 cycles after filling with salt. On the 6th cycle, the light will be extinguished.The control module counts the activation of the regeneration valve and after the end of the 29th cycle, the machine fills with 600cc of water and turns on the warning light. The salt container then needs to be filled with 1.5 - 2 kg of salt. A further 600cc of water will then be displaced into the sump.This along with the previous 600cc will close the pressure contacts. At the start of the next cycle, the module detects the pressure switch closure and switches off the salt indicator light.Note: - If salt is added before the end of the 29th cycle, for example, at the 15th cycle, the indicator will be illuminated at the end of the 29th cycle. To overcome this situation, 2 litres of water should be poured into the dishwasher. This will close the pressure contacts and the control module will extinguish the indicator light the next time the machine is used.

DRYAIR

PROCESSED AIR

CONDENSATEDrains to Sump

Moist Air 100% RH

Processed Air 55%RHVented to inside of Cabinet

Outlet to Sump

10

Rinse Aid Warning IndicatorSituated next to the salt indicator, illuminates when the rinse aid reservoir requires refilling.The turbidity sensor achieves the detection of rinse aid, utilising the same principle as soil level detection.The final rinse water is measured 5 seconds before the rinse aid is dispensed and another reading is taken 1 minute after the rinse aid has been dispensed, The two readings are compared. If the value is different the rinse aid warning indicator is turned on at the end of the cycle, alerting the user to refill the rinse aid compartment.Half Load ButtonWhen selected allows the upper or lower basket to be selected to enable the half load feature. When selected, the half load LED illuminates on the LCD display.The half load feature should be selected before setting the main wash programme.Softener UnitSituated on the base of the dishwasher, water is fed from the air break unit into the base of the softener unit containing the sodium charged ion resins which remove calcium from hard water.The softened water now exits from the softener into the sump. After a number of fills in hardened water areas the softener resins become saturated with calcium ions and are unable to absorb any more. Consequently, further softening is not possible and for this reason it is necessary to wash the resins in a saline solution at the end of the final rinse cycle. When the regeneration solenoid is activated, the water that is held in the air break unit (200 ml) is gravity fed into the salt container, displacing the water already in the salt container.An amount of saline solution to be flushed through the softener unit will be predetermined by the setting of the Water Hardness Adjuster. The displaced water runs into the resin container to regenerate the resins. The ionic exchange lasts between 20 - 25 minutes. Two resin washes will then be performed. 1 litre of water is filled. This removes the salt water from the resins. This is then pumped out and a further 1 litre of water is filled to repeat the process.High Pressure SensorMounted on the sump adjacent to the filters, it consists of a microswitch connected to a diaphragm that is activated on contact with water. When the water pressure flowing through the filters in the dishwasher falls below the level required to wash efficiently (below 0.15 bar) the microswitch opens sending a signal to the control module. this activates the filter cleaning procedure.Filter Cleaning ProcedureThe dishwasher has a special feature that will clean the filters if a blockage is detected.

NOTE: - This feature only applies to the Intensive, Normal and Eco wash programmes and may extend the programme time by up to 40 minutes.The filter cleaning procedure can be initialised in two ways.1. If the Pressure Switch contacts do not close after the initial 2 litre fill via the water turbine.2. During circulation if it is detected that the Pressure Sensor contacts are open.

The principle of the filter-cleaning programme is to fill the dishwasher with a greater amount of water than in normal use (up to 6.5 litres).The circulation motor and heater are then pulsed Off and On. This breaks up the food debris blocking the filters allowing it to be pumped away.The filter cleaning sequence checks at the hot rinse step of the filter cleaning programme the state of the pressure sensor contacts. If the contacts are closed then the filter clean will complete and then the selected programme will resume. If the contacts are still open, then the hot rinse is repeated.If after this second hot rinse the contacts are still open, then the programme ends and displays the blocked filter alarm on the console.

11

The are three types of filter cleaning cycles depending at which part of a programme the blockage is detected.The charts below show the filter cleaning sequence for the three possible situations that may occur.

Example 1 - During Pre-Wash

Example 2 - During Wash

6.5 litres filled 6.5litres filled

Drain

Drain

Drain andfill6.5 litres

Drain and fill5.5 litres

Jog-typerinse 10’

1st wash impulses 16’

2nd wash impulses 24’Wash sump

Rinse to 70°C

1

If the sensor contacts open for at least 5 secs, after point 1 therinse is repeated. If the sensor contacts open during the 2nd rinse(for at least 5 secs), after point 1 the dishwasher shows the filtercleaning alarm.

Drain and fill 5.5 litres


Wash sump

Fill 2 litres

1st wash impulses 24 mins

2nd wash impulses

Jog-type rinse10 mins

1

Rinse up to70°C

If the sensor contacts open for at least 5 secs, after point 1 therinse is repeated. If the sensor contacts open during the 2nd rinse(for at least 5 secs), after point 1 the dishwasher shows the filtercleaning alarm.

12

Example 3 - During Rinse

1

Rinse to70°C

Jog-type rinse10 mins


If the sensor contacts open for at least 5secs, after point 1 the rinse is repeated.If the sensor contacts open during the2nd rinse (for at least 5 secs), afterpoint 1 the dishwasher shows the filtercleaning alarm.

13

SPECIAL FILTER CLEANING CYCLE FLOW CHART

If the filter cleaning cycle fails to clear the blockage (the pressure sensor is still in the closed position) the filter blocked alarm will display.

Cycle startDrain + 1st fill

2.5l filled in-cyclevia the turbine

Checkpressure switch

2 litres filled via the TURBINEbetween rinses

Motor pump ON

Check pressure switchfor 2 seconds

Fill until pressure switchcontacts close,

max 6 litres for 2 mins

Pressure switch

FILTER CLEANING PROGRAMME

cleaningPressure switch / filter

alarm AL 05

Confirm programme

During the wash cycle thehigh pressure sensor

CLOSES

The DW fills 4.2l during the 1st prerinse(approx. 0.5l extra, taking into account waterdeposited on dry dishes);3.8 litres remain to be filled.

14

INSTALLATION INSTRUCTIONS

Choose where you want to install your dishwasher, you can even place it so that its sides or back panel are side by side with furniture or up against the wall. The dishwasher is provided with water supply and drain hoses, which can be directed towards the left or right to facilitate appropriate installation.Easy to build-inThis dishwasher model can be built under a single worktop (please read the relevant instruction sheet).

LevellingOnce the appliance is positioned, adjust the feet by screwing them in or out depending on how high you want it and to level it so that it is horizontal. Make sure that it is not inclined more than 2 degrees. If the appliance is level, it will help ensure its correct operation. Cold Water ConnectionThis dishwasher should be connected to the water mains using the cold water supply hose provided with the appliance only. Do not use a different hose. In the event of replacements, use original spare parts only. Connect the cold water supply hose 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 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.

This Dishwasher MUST be EarthedOnly now can you plug the appliance into a socket provided with an efficient earth connection (the system's earthing is a guarantee of safety provided for by law, make sure your system has it).

Anti-flood ProtectionYour dishwasher is provided with a special system which blocks the water supply in the event of leaks inside the appliance.

Drain Hose ConnectionFit the drain pipe into a drain line with a minimum diameter of 4 cm or place it over the sink. Avoid restricting or bending it. Use the special plastic elbow provided (see figure) to position it in the best possible way. The part of the pipe marked with the letter A should be between 40 and 100 cm above the ground. The pipe should not be immersed in water.

Electrical ConnectionFirst of all, check that the mains voltage and frequency values correspond to those stated on the rating plate located on the stainless steel inner door of the appliance and that the electrical system to which the dishwasher is connected is sized for the maximum current indicated on said rating plate.

A

15

SERVICING NOTES & DISMANTLING INSTRUCTIONS

SAFETY NOTES:-

1. ENSURE THAT THE MACHINE IS UNPLUGGED BEFORE DISMANTLING.

2. BEWARE OF SHARP EDGES ON METAL PANELS AND PRESSED PARTS.

A. Top Cover1. Remove the two screws at the rear securing the top.2. Slide the top forward to remove.

B. Kickstrip1. Carefully tilt the dishwasher back.2. Remove the 2 screws securing the kickstrip to the chassis.3. Pull the kickstrip forward to remove.

C. Outer Door Panel1. Remove the 8 screws from the side flanges of the inner door.2. Slide the door panel down to disengage from the locating lugs.

D. Side Panels 1. Remove the top cover as in (A).2. Remove the kickstrip as in (B).3. Remove the kickstrip end caps.4. Remove the 11 screws securing each side panel (4 front, 2 top, 5 rear).

E. Base Panel1. Remove the 3 screws at the rear of the base panel securing the panel to the chassis.2. Carefully tilt the machine backwards and lay the machine on its back.3. Remove the 3 screws securing the base panel at the front of the chassis.4. Disconnect the wiring to the float switch and remove the base panel.5. Replace in reverse order.

F. Console1. Remove the outer door panel as in (C).2. Remove the 6 screws securing console to the inner door panel.3. Replace in reverse order.

G. Control Module1. Remove the console as in (F).2. Remove the outer door panel as in (C).3. Remove the polystyrene insulation from the inner door panel.4. Unclip the thermistor from its mounting position on the inner door next to the dispenser.5. Remove the 3 screws securing the module bracket to the console.6. Disconnect wiring from the module, making note of the connections.7. Replace in reverse order.

H. LCD Display Module1. Remove the console as in (F).2. Remove the outer door panel as in (C).3. Disconnect the wiring to the display module making special note of the connections.4. Remove the 2 screws securing the display module to the console.5. Replace in reverse order.

16

I. Door Latch & Switch1. Remove the console as in (F).2. Disconnect the wiring from the microswitch.3. Remove the 2 screws securing the door latch to the console.4. Replace in reverse order.

J. LCD Module1. Remove the console as in (F).2. Remove the ribbon cables.3. Remove the 2 screws securing the module to the console.4. Replace in reverse order.

K. Drain Pump1. Remove the base panel as in (E).2. Remove the screw securing the pump to the sump housing.3. Remove the drain hose from the pump.4. Disconnect the wiring, noting the connections.5. Twist the pump body in an anti clockwise direction to disengage the plastic lugs from the sump

housing, making note of the O ring.6. Replace in reverse order.

L. Circulation Motor & Alternating Wash Valve1. Remove the bottom spray arm by turning the locking nut anti-clockwise.2. Remove the spray arm connector from inside of the tub (turning anti-clockwise).3. Using suitable floor protection, carefully lay the dishwasher on its back or left hand side (ensuring

that the dishwasher door is closed); this may result in water spillage from the air break unit.4. Remove the base panel as in (D).5. Disconnect the wiring to the pressure sensor.6. Disconnect the wiring to the motor (multi-pin connector).7. Remove the coiled motor fixing by levering of the end of the motor housing using a large flat blade

screwdriver.8. Remove the hoses to the circulation motor. It may be easier to remove the drain hose to gain

access to the rear hose connection. The hoses have special fixing clips; these can be slackened by inserting a small flat blade screwdriver into the clip loop and twisting the blade to slacken the clip. The larger hose clips can be replaced with clip Part Number 9900250. The smaller hose clips can be replaced with Hose Clip, Part Number 1801927.

9. The motor and alternating wash valve can now be removed from the machine.10. The alternating wash valve can then be removed from the circulation motor by removing the three

screws securing the valve to the circulation motor pump housing.11. Replace in reverse order.

M. Heater1. Using suitable floor protection carefully invert the dishwasher; this may result in water spillage

from the air break unit.2. Remove the base panel as in (E).3. Disconnect the wiring. See (L8) regarding clip removal.4. Slacken the clips securing the hoses.5. Replace in reverse order. On refitting, ensure that the mains cable wiring is routed away from the

heater casing using a cable tie if necessary.

17

N. Turbidity Sensor1. Remove the base panel as in (B).2. Remove the heater as in (M).3. Slacken the hose clip securing the sensor hose to the circulation motor. See (L8).4. Remove the retaining screw from the connector block on the sensor and remove the connector,

making special note of the orientation of the plug, as it is not keyed.

O. Fill Valve1. Remove the left hand side panel as in (D).2. Remove the upper rear support (L shaped bracket mounted above the fill valve).3. Slide the valve upward to disengage it from the lower rear support.4. Disconnect the wiring from the 2 pin connector.5. Remove the hoses.6. Replace in reverse order.

P. Mains Neon1. Remove the console as in (F).2. The neon can be removed by pulling out gently from the holder.

Q. Pressure Switch1. Remove the right hand side panel as in (D).2. Access can now be gained to the pressure switch mounted at the front of the chassis.

If the pressure hose is removed or replaced for any reason, it is important that it is refitted into the clip on the side of the tub assembly. Failure to do so will affect the operation of the pressure switch.

R. Turbo Dry Fan & Condenser - Fitted before Serial Number 50412.00001. Remove the top cover as in (A).2. Remove the kickstrip as in (B).3. Remove the right hand side panel as in (D).4. From the inside of the tub remove the condenser vent cap by turning it anti-clockwise.5. Disconnect the wiring to the fan (2 pin connector adjacent to the pressure switch). It may be

easier to remove the base panel to gain access to the 2 pin connector.6. Lift the condenser assembly off the chassis locating studs.7. Remove the hose from the condenser.8. Replace in reverse order.

Note: - The fan and condenser are supplied as a complete assembly.

18

S. Sump Assembly1. Remove the lower basket, filters and lower spray arm.

2. Insert Special Tool (Part Number 5600269) into the sump retaining ring as in Figs. 1 and 2 above.

3. Turn the tool anti-clockwise to remove the sump retaining ring.The sump retaining tool can also be used to assist in refitting the sump retaining ring.

4. Remove the dishwasher base tray (H).5. The sump has a locating peg which should be lined up with a cut out in the sump opening.

6. Carefully line up the peg in the sump assembly with the small recess in the hole in the tank.See Figs. 3 and 4. Tip the machine back slightly and slide the block supplied with the Special Tool (Part Number 5600269) or similar support under the flat area of the sump. Carefully lower the machine onto the support, taking care not to trap any wiring, damage the drain pump or distort the tank.

7. Check that the sump is still aligned with the cut out and fits centrally into the tank opening.8. The sump retaining ring is a bayonet fitting and should be lined with the 3 bayonet pegs on the

sump.9. Using the Special Tool as in Fig. 1, turn the ring clockwise until the retaining ring reaches its stop

position.10. Check the ring is fixed securely and that the 3 bayonet pegs are located under the retaining ring.

Fig. 1

Fig. 2

Fig. 3

Fig. 4

19

FAULT CODES & DIAGNOSTICSIf an error is detected in programme, the programme will be terminated and one of the following errors will be displayed on the LCD.

In the event of any of the above codes being displayed, after the fault has been rectified it will be necessary to reset the machine. This is achieved by pressing and holding the Start/Reset button.After a few seconds the fault code will be replaced with dashes on the LCD display.

FaultCode

Fault Possible Cause(s)

AL 01 Overflow (water in base pan).

Leak from water line.

AL 02 Solenoid valve broken. Inlet valve, letting by, heater Earth fault, open circuit heater

AL 03 Time out draining Pump connections, blockage, module

AL 04 Thermistor circuit Thermistor c/w timer

AL 05 Filters blocked Mesh plate, filter or microfilter, pressure sensor, pressure switch, circulation pump

AL 06 Time out filling Inlet valve, connections, timer, water turbine

AL 08 Time out heating NTC detached from casing

AL 09 Software recognition error

Timer not programmed, wrong keypad

AL 10 Heating circuit Heating element, connections, module, relay.

AL 99 Communication problem

Bit100 Timer Card, delay or connecting cable

H20 Time out filling Customers tap not turned on

20

Possible Reasons For Fault Code Displayed

Note: - Always carry out an earth insulation test before using the fault guide, an earth fault on a component or damaged wiring may display fault codes not related to the component signalled, e.g. an earth fault on the element can display A02.If any earth faults are found on initial testing they must be rectified before using the fault code chart, to avoid erroneous codes being displayed.Modern components especially modules are very reliable, therefore edge connectors, contacts and wiring should be thoroughly tested before trying components.

A01 The micro-switch in the base tray has been closed for 9 seconds to signal the alarm.Water is leaking from components or hoses in the base of the machine.Programme will abort and the drain pump will be energised.

A02 The module has detected movement of the turbine for 9 seconds when the inlet valve was notenergised.The inlet valve is letting water by when the valve is closed.The programme will be aborted and the drain pump is energised.Note: Earth faults on the heating element and wash pump can display A02.

A03 The drain pump has been energised for 4 minutes, but the pressure switch has not switchedto the empty position (contacts 11-12).

• The drain pump is fed from the wash pump; therefore an open circuit wash pump could stopthe drain pump from working.

• Check continuity of the pump coil.• A jammed drain pump or blockage in the outlet hose or plumbing.• A blocked pressure chamber or pressure switch air tube.• A faulty pressure switch.• Check wiring to pump and module connections.• If all the above are OK, replace the module.

A04 The module has detected either an open or short circuit on the thermistor or its associatedwiring.

A05 Filter blockedThe machine has tried to carry out the filter cleaning cycle but has failed to clear the blockage.

• Check the filter or sump is not blocked.• Check the pressure switch is not stuck in the empty position (contacts 11-12) or the

pressure chamber or air tube are either blocked, unattached or split.• Check the high pressure sensor or the connecting hose for blockages.• Check the wash pump is circulating the water.• Check the wiring to the pressure switch and high pressure sensor.• Check the edge connector blocks on the pressure switch and module card.• Check the outlet hose is not too low causing the machine to siphon.• If all the above tests are OK replace module card.

Aborts the cycle and energises the drain pump.

21

A06 Time out for filling.The module has not detected turbine rotation with the inlet valve energised.

• Check the taps are turned on and that the fill hoses are not kinked.• Check the inlet valve coil (4k ohms approximately) and wiring to valve and edge connector

on module.• Check the wiring and connector blocks to module and inlet valve.• If all above tests are OK, replace turbine or module as required.

Aborts the cycle and energises the drain pump.

A08 Time out for water heating.The module has not detected temperature increase in 60 minutes.

• Check that the thermistor is not detached from the inner door panel.• The thermistor is out of calibration.• The wash pump is not circulating the water.• Check the element is heating, and the TOC is not opening after a time.• If all above tests are OK replace module card.

A09 Module recognition error.• Either a faulty module card or the module card is not communicating with the display.• Check edge connections and wiring.• Replace module or display as required.

A10 Open circuit in heating circuit.• Check the circuit of the heating element (26 ohms).• Check for an open circuit heater cut-out.• Check pressure switch open circuit (connections 11-14).• Check wiring and connections between module card, pressure switch and heater.• If all above is OK, replace module card.

NOTE: -• If the pressure switch moves to the empty position during heating, A10 will display.• If A10 displays intermittently, if the spray arms are not able to rotate correctly, the heater will

overheat and the cut-out will operate displaying A10.

Filling FaultsTurbine faulty. The machine will proceed as if the fill process was controlled by the pressure switch. At the end of the cycle A06 will be displayed.Pressure Switch Faulty. The machine will signal A05 at the end of the filling stage.Turbine and Pressure Switch Faulty. The machine will fill with a maximum of 8 litres of water in a specified time.Solenoid Fills when Off. The display will signal A02.

NOTE: - There is no fault code for a faulty wash pump.A faulty wash pump could display A03, A05, A08 or A10 depending at what stage of the cycle the wash pump fails.

22

TEST PROGRAMME

The following test programme can be used if a fault is suspected within the appliance. There are two test that can be carried out - a 5 minute and a 20 minute test.Each of the two tests performs the same functional check of components with the 20 minute test heating the water to 55°C, verifying the operation of the heater and thermistor.

Selecting the Test Programme1. Ensure that the dishwasher is switched On and check that no programme is selected.2. Press the Programme button (P) once.3. Press the Stand-by button. The display will switch Off.4. Immediately press the Stand-by button. The display will switch On.5. Press the Programme button (P) once.6. Press the Stand-by button. The display will switch Off.7. Immediately press the Stand-by button. The display will switch On. The Pre-Wash and Drying

symbols will be flashing.

Long Test1. Press the Programme button (P) once. The Wash and Rinse symbols will be displayed.2. Press the Start/Reset button. 'ROD' will be displayed and the test programme will be carried out.3. At the end of the test, the buzzer sounds twice and 'END' is displayed. Pressing the (P) button

will then enable the programmes to be selected as normal.

Short Test1. Press the Programme button (P) twice. The Wash and Rinse symbols will be displayed.2. Press the Start/Reset button. 'TEST' will be displayed and the test programme will be carried out.3. At the end of the test, the buzzer sounds twice and 'END' is displayed. Pressing the (P) button

will then enable the programmes to be selected as normal.

To cancel a test programme in progress, press and hold the Start/Reset button. The buzzer will sound three times and cancel the test programme.

FITTING NEW 100 BIT CONTROL CARDS

When a 100 bit control card is first fitted, it may go straight into a factory test cycle.To eliminate the test cycle: -• Switch On the machine and with the door closed.• Wait for the test cycle to start up (2 LEDs will start to flash).• Switch Off the machine with the door still closed and wait for 15 seconds.• Switch On the machine.• Reset the test cycle by turning the selector knob to reset and leave for 5 seconds.Note: - all actions are to be carried out quickly and the 15 seconds must be exact.

continued

23

• If the machine has a low resistance to Earth the timer card may become confused and LEDs may not display and the machine may not start.

• If a new timer card has been fitted and will not come off the test cycle, check: -1. The correct card has been fitted. The version is stamped on the label.2. Check for low resistance to Earth. Test the wash pump and heater from their terminals.3. Check that the 2 flying leads on the module have not been crossed.4. Check the display card is fitted into the console correctly and none of the buttons are stuck.

24

SEQUENCE CHART

PREWASHDrain and reset alternating wash valve to Position 0 X X X X X X X X X 30'' OpenFill 2 litres static via water turbine X X X XVerify Pressure Switch Closed X X X X ClosedFill 2.7 Litres & Circulate X X X XCirculate X X X X 20''Circulate Alternating Valve Position 1 &Verify Pressure Sensor Closed

X X 18'

Circulate Alternating Valve Position 1 &Verify Pressure Sensor Closed

X 6'


X X 5'

Circulate & Turbidity Sensor Reading XCirculate & Heat Alternating Valve Position 2& Verify Pressure Sensor Closed

X40°C X

Drain X X X X 60''Drain and reset alternating wash valve to Position 0 X X X X 15'' OpenFill 2 litres static via water turbine XVerify Pressure Switch Closed XFill 2 Litres via water turbine & Circulate XFill further 2 Litres if Pressure Switch is openmaximum 2 minutes

X X 120''

Circulate & Turbidity Sensor Reading XCirculate Alternating Valve Position 1 &Verify Pressure Sensor Closed

X X 3'

Drain X 60''Drain and reset alternating wash valve to Position 0 X 15''WASHFill 2 litres static via water turbine X X X X X X XVerify Pressure Switch Closed X X X X X X X ClosedFill 2 Litres via water turbine X X X X X X XFill further 2 Litres if Pressure Switch is openmaximum 2 minutes

X X X X X X X 120'' Closed

Regenerate & Circulate X X 60''Detergent & Circulate X X X 60''Circulate & Turbidity Sensor Reading XDetergent & Circulate X X X X 60''Heat & Circulate Alternating Valve Position 1 X42°C X42°C X51°CCirculate in Alternating Valve Position 2 X 5'Circulate & Heat Alternating Valve Position 2& Verify Pressure Sensor Closed

X63°C X48°C X52°C X48°C X


X X X 20'


X X 6'


X X 10'

Drain X X X X X X 60''Drain and reset alternating wash valve to Position 0 X X X X X X 15'' OpenFill 1 Litre X X XDrain X X 30'' OpenFill 1 Litre X XDrain X X X 30'' OpenCOLD RINSEFill 2 litres static via water turbine X X X X XVerify Pressure Switch Closed X X X X X ClosedFill 2 Litres via water turbine & Circulate X X X X XFill further 2 Litres if Pressure Switch is openmaximum 2 minutes

X X X X X 120'' Closed

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Note: - Due to software changes this chart should only be used as an indication only.

Circulate in Alternating Valve Position 1 X 8'Circulate in Alternating Valve Position 1 X X 6'Circulate in Alternating Valve Position 1 X X 120''Circulate in Alternating Valve Position 1 X XDrain X X 60''Drain and reset alternating wash valve to Position 0 X X 15'' OpenFill 2 litres static via water turbine XVerify Pressure Switch Closed X ClosedFill 2 Litres via water turbine & Circulate XFill further 2 Litres if Pressure Switch is openmaximum 2 minutes

X 120'' Closed

Circulate Alternating Valve Position 1 X X 60''Drain X 60''Drain and reset alternating wash valve to Position 0 X 15'' OpenWARM RINSEFill 2 litres static via water turbine X XVerify Pressure Switch Closed X X ClosedFill 2 Litres via water turbine & Circulate X XFill further 2 Litres if Pressure Switch is openmaximum 2 mins

X X 120'' Closed

Circulate & Pulse Heater On 10 Secs Off 20 Secs X X 3'Circulate Alternating Valve Position 2 X X X 6'Drain X X 60''Drain and reset alternating wash valve to Position 0 X X 15'' OpenHOT RINSEFill 2 litres static via water turbine X X X X X XVerify Pressure Switch Closed X X X X X X ClosedFill 2 Litres via water turbine & Circulate X X X X X XFill further 2 Litres if Pressure Switch is openmaximum 2 minutes

X X X X X X 120" Closed

Heat & Circulate Alternating Valve Position 2 X48°C X48°C X48°C X48°CHeat & Circulate Alternating Valve Position 2& Verify Pressure Sensor Closed

X48°C X48°C X50°C X

Verify for Rinse Aid X X X X X X XDispense Rinse Aid X X X X X X XVerify for Rinse Aid X X X X X X XHeat & Circulate Alternating Valve Position 2 X62°C X6

/68°CX62

/68°CHeat & Circulate Alternating Valve Position 2& Verify Pressure Sensor Closed

X62/68°C

X62/68°C

X62/70°C

X62/68°C

X

Circulate Alternating Valve Position 2 X 8'Circulate Alternating Valve Position 2 X X X X X X 5'DRYINGRegeneration X X X X X X 60''Pause X X X X X X 4'Drain X X X X X X 60'' OpenFan/Air Drying X 30'Fan/Air Drying X 1'Fan/Air Drying X X X 20'Fill 1 Litre X X X X X XDrain X X X X X X 30'' OpenCirculate X X X X 60''Drain X X X X 30'' OpenFill 1 Litre X X X X X XDrain X X X X 30'' OpenCirculate X X X X 60''Drain and reset alternating wash valve to Position 0 X X X X X X X X X 30'' OpenFill 600ml if Salt light On X X X X X X X X XReset X X X X X X X X X

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WIRING DIAGRAM - FDW80 & FDW85 with Bit100 Controls

160016410.01

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27

PARTS and

ACCESSORIES

To order parts and accessories contact ourNational Mail Order Parts Hotline

08709 077 077Monday to Friday 8.30am to 5.00pm

Saturday 8.30am to 12.00 noon

or online at :

www.theservicecentre.co.uk

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