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12 of 40

Service Manual UK

Indesit

 

Company

English

Virtual Sensor (BLAC WASH PUMP) Sensing Blocked Filter

If, during the wash cycle, the Wash Pump (functioning as Virtual Sensor) senses a Clogged Filters/
Suds situation, the main board will reduce the motor rpm by 20%. 
If the situation stabilizes, the problem will be identified as “Suds” and the pump continues operating at 
the new speed.
If the pump continues to struggle (condition 3: build-up of suds or filters clogged), 
the speed will be reduced by a further 20% and the problem identified as “Clogged Filters”. If the 
situation stabilizes, the pump will continue operating at the new speed.
If the problem persists, the machine will begin to top up with water until there are 
5.5 litres in the tub or until the problem is overcome (whichever occurs first). 
If the problem still persists (even after 5.5 litres of water have entered), the machine 
will drain and the program skips to the next step of the cycle.

Drain Pump

The new Drain Pump has a BLAC motor.

The speed of this pump is controlled by the Power Module in response 
to the different conditions prevailing at any given moment.

The BLAC Drain Pump's main function is to drain water from the 
machine. 

In addition, the BLAC drain pump (in combination with the BLAC Wash 

Pump) operate as a  virtual sensors.

Anti Flood Device

Consisting of a polystyrene float and microswitch. An excess of water in the base operates the float 
switch sending a signal to the control module operating the drain pump and displaying a fault code on 
the console.

Summary of Contents for LTF11M121OUK

Page 1: ...terborough PE2 9JB Registered in London 106725 Service Information Hotpoint Fully Integrated DISHWASHER with Display and O3 Active Oxygen Models Covered LTF11M121OUK 82906 Using DEA700 power module 54...

Page 2: ...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...

Page 3: ...Flow through type with built in safety cut out and fuse Heater Wattage 1 8 kW 230V AC Heater Resistance 29 20 Circulation Motor Type BLDC Flexipower Motor Motor RPM Variable Motor Power Consumption V...

Page 4: ...M 1 1 2 0 UK Product Type User Interface Programmes Interior Flexi power Energy Noise Features Market Dishwasher Total Integrated F Digit B Basic Knob K Knob D LCD 11 Medium 14 places 1 Yes 0 No 1 A 2...

Page 5: ...hardness is adjusted by the user before the machine is first used ECODESIGN REGULATION The ECO wash cycle is the standard cycle to which the energy label data refers It can be used to wash crockery wi...

Page 6: ...play this indicates a fault code Low Rinse Aid Warning Low Salt Warning Delayed Time Basket Selected Delayed Start Button The Programme can be delayed between 1 and 12 hours Not compatible with all cy...

Page 7: ...very soiled cutlery The spraying pressure is reinforced and the washing temperature is increased to guarantee the best washing on very soiled crockery Select the option and the wash cycle Normal to a...

Page 8: ...t Tabs Extra Dry 2 00 Economical and fast wash for delicate items which are sensitive to high temperatures run immediately after use glassware in the upper rack fragile plates in the lower rack 35 gr...

Page 9: ...save the adjustment setting Note Even if using multi functional tablets the salt dispenser should still be filled RINSE AID ADJUSTMENT The Rinse Aid Setting has to be Electronically set Starting condi...

Page 10: ...ilent and when the door is opened and the Programme Number is permanently displayed the cycle has not finished Close the door and allow the programme to continue During the final part of the Drying Cy...

Page 11: ...lts and 10mA with RAST 2 5 connector VIRTUAL SENSORS The pressure switch has been replaced by a system of Virtual Sensors that will detect the presence or absence of water in the tub In practice these...

Page 12: ...ine will begin to top up with water until there are 5 5 litres in the tub or until the problem is overcome whichever occurs first If the problem still persists even after 5 5 litres of water have ente...

Page 13: ...nsor W Sensor Wash Pump used as Sensor Possible Filling Draining Errors Machine is not emptying Once a program has been started the first action of the dishwasher will be to drain until the D Sensor r...

Page 14: ...be dirty at the end of the cycle No Fault code will display Detergent Rinse Aid Dispenser and Oxygen Generator Soap Dispenser Qxygen Generator The dispenser fitted to these models works differently t...

Page 15: ...the solenoid valve will emit 3 audible pulses each time it is activated If nothing is heard when activating the function the fault is in the solenoid valve Rinse Aid The Rinse Aid Warning Light is op...

Page 16: ...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...

Page 17: ...t below Regeneration Sequence 1 Regeneration valve activated after 2 seconds the fill inlet solenoid is opened to allow water flow water flows from the inlet through the salt and the mixture of water...

Page 18: ...em The flat filter is made of metal and larger than previous models which will prevent the filter from clogging Located on the right hand side of the machine The Air Break Assembly carries out 3 funct...

Page 19: ...19 of 40 Indesit Company Service Manual UK English Water Hydraulics Upper Spray Arm Lower Spray Arm Filter...

Page 20: ...mpty status is verified by the wash pump W Sensor running with the bottom delivery outlet open at 1400 rpm for 40 seconds 2 The tub takes in 2 litres of water with activation of the W Sensor to confir...

Page 21: ...If the dishwasher completes the cycle in a very short time with very poor wash results see BLOCKED FILTER on page 14 Flashing Number Fault Possible Cause s 1 Overflow water in base pan Leak from water...

Page 22: ...pressure switch has not switched to the empty position contacts 11 12 Check continuity of the pump coil A jammed drain pump or blockage in the outlet hose or plumbing A blocked pressure chamber or pr...

Page 23: ...is only applicable to the LFT321HXUK and LFT3214HXUK Note Due to the electronics fitted to the wash motor it is not possible to test the wash pump motor with test equipment Pump Motor Check the wirin...

Page 24: ...Times The times in the handbook and displayed at the start of the cycle are average times and will be affected by the following points Inlet water temperature below 19 C Tab option enabled Water hardn...

Page 25: ...661 50 146 215 35 17127 169 55 117 828 30 12014 762 60 95 420 25 8524 305 65 77 718 20 6113 811 70 63 584 15 4435 437 75 52 260 10 3249 216 80 43 166 5 2403 515 85 35 808 0 1794 358 90 29 828 5 1351...

Page 26: ...EL SENSOR Motorized Diverter Valve M Sensing TURBIDITY SENSOR REGEN VALVE FILL VALVE DISPENSER DOOR SWITCH BASE PROTECTION FLOAT SWITCH TURBINE 1 TX 12 VOLT RX NEUTRO TRIAC ALT LINEA _IP 1 2 3 TIMER D...

Page 27: ...nserted correctly with the Chip on the card facing the PCB of the Reader 3 Insert the Reader Card into module connection port see photo You MUST hold the Reader in place whilst programming is taking p...

Page 28: ...Note The power light on the Key above is GREEN The clear type Key below has a RED light Note The USB Hardware Key also supports a low voltage connection point which allows an external power supply to...

Page 29: ...pegs and lift away B Front Access Flap 1 Remove 2 securing screws 2 Release 2 locking clips 3 Carefully open flap releasing wiring harness from top edge Note The Control Module is attached to the flap...

Page 30: ...move base access panel as in D 2 Release 2 hose clips and hoses 3 Ease motor towards front away from mounting bracket 4 Separate motor from heater by twisting in a clockwise direction 5 Important On r...

Page 31: ...2 Using suitable pliers squeeze clip and release pressure switch 3 Disconnect wiring I Overflow Unit base float switch 1 Facing the front of machine remove right hand side panel as in A 2 Release cli...

Page 32: ...on valve end and lift up to allow filler neck to be removed from the tank L Sump 1 Remove filters and lower spray arm 2 Remove 2 fixing screws and detach upper wash arm inlet pipe from sump 3 Remove 4...

Page 33: ...anel away from inner door 4 Disconnect wiring observe correct location and orientation before removal 5 Using a flat blade screwdriver release the left hand securing tab first to avoid damaging the bu...

Page 34: ...ound its fastening 4 Disconnect the Earth Tags Fastons located on the hinges 5 Remove 4 screws 2 in each side fixing the inner door and pull out 6 Pull the inner door upwards 7 Remove the screws locat...

Page 35: ...etc in cups and glasses in the upper section of the basket which looks like resin are generally caused by the spray arm not functioning properly Possible causes of spray arm inefficiency Loading large...

Page 36: ...silica scum or detergent scum which can sometimes form by precipitation of one of the components of dishwasher detergents The film can be scratched off with the tip of a needle unlike etching Unfortun...

Page 37: ...ishes is sufficient to withstand the water pressure Normal daily use of dishes causes microscopic cracks around the edges which fill with water during washing During the heating period the water in th...

Page 38: ...hese utensils before the final heated rinse should prevent further problems Certain coloured aluminium utensils may discolour and should be washed manually K RUSTING INSIDE THE MACHINE Normally caused...

Page 39: ...39 of 40 Service Manual UK Indesit Company English END...

Page 40: ...40 of 40 Service Manual UK Indesit Company English...

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