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Bosch SRU53E05AU Repair Instructions

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1
SAFETY ........................................................ 3
2
INSTALLATION ............................................ 4
2.1
Aligning the appliance........................................................ 4
2.2
Electrical connection .......................................................... 4
2.3
Water connection................................................................ 4
3
OPERATION ................................................. 5
3.1
Control panel....................................................................... 5
3.2
LEDs..................................................................................... 5
3.3
Main switch.......................................................................... 5
3.4
Pushbuttons / Additional functions .................................. 5
3.5
Programme selector switch ............................................... 6
3.6
Setting the hardness range................................................ 6
3.7
Reset .................................................................................... 6
4
COMPONENTS............................................. 7
4.1
Module ................................................................................. 7
4.2
Actuator ............................................................................. 10
4.3
Aqua sensor (optional) ..................................................... 11
4.4
Aqua Stop valve ................................................................ 12
4.5
Flow sensor ....................................................................... 13
4.6
NTC .................................................................................... 14
4.7
Salt and rinse-aid indicators (optional)........................... 15
4.8
Optical low rinse-aid sensor (optional) ........................... 16
4.9
Dispenser........................................................................... 17
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Dishwasher
4.10
Water softening system ................................................... 18
4.11
Regeneration valve........................................................... 19
4.12
Filter system ..................................................................... 20
4.13
Rinsing and pumping system.......................................... 21
4.14
Door spring ....................................................................... 22
4.15
Circulation pump (SICASYM) .......................................... 23
4.16
Instantaneous water heater ............................................. 24
4.17
Detergent-solution pump ................................................. 25
4.18
Level sensor with safety function ................................... 26
1.1
Water inlet without heat exchanger ................................ 27
4.19
Water points...................................................................... 28
5
FUNCTIONS................................................29
5.1
3 in 1 detergents ............................................................... 29
6
REPAIR .......................................................30
6.1
Installing the module........................................................ 30
6.2
Replacing the Aqua Stop valve ....................................... 31
6.3
Worktop (optional)............................................................ 32
6.4
Removing and installing dispenser ................................ 33
1.1
Axial flow sensor .............................................................. 34
6.5
6.6
Detergent-solution pump ................................................. 37
6.7
Removing and installing hinge........................................ 38
6.8
Water softening system ................................................... 40
6.9
Instantaneous water heater ............................................. 41
6.10
Replacing the door seal ................................................... 42

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  Summary of Contents for Bosch SRU53E05AU

  • Page 1: Table Of Contents

    Dishwasher 4.10 Water softening system ........... 18 SAFETY ............3 4.11 Regeneration valve............19 INSTALLATION ..........4 4.12 Filter system ..............20 4.13 Rinsing and pumping system.......... 21 Aligning the appliance............4 4.14 Door spring ............... 22 Electrical connection ............4 4.15 Circulation pump (SICASYM) ..........
  • Page 2 6.11 Diagnosis aids..............43 FAULT DIAGNOSTICS....... 44 Draining ................44 Odour ................. 45 Noises ................46 Rinsing result ..............47 Drying result..............56 Circulation pump .............. 57 Control unit/module/cable harness ......... 58 TECHNICAL SPECIFICATIONS ....59 General technical specifications ........59 Consumption rates ............
  • Page 3: Safety

    SAFETY WARNING DANGER Comply with the following instructions: Repairs may be carried out by a qualified electrician only! If conducting the test in accordance with VDE 0701 via the connector, The user may be put at risk and injured by improper repairs! the heater (instantaneous water heater) must be tested directly for insulation faults due to all-pole disconnection (relays;...
  • Page 4: Installation

    INSTALLATION Water connection If the appliance is connected to the drain with the standard hose Aligning the appliance length, the max. permitted height from the floor is 90 cm. If the drain- age hose is extended, a max. height of 80 cm must not be exceeded. To ensure a perfect locking function and prevent leaks in the area of The water connection ( inch) requires a conventional water line with...
  • Page 5: Operation

    OPERATION Main switch The main switch is situated on the left side, separate from the elec- Control panel tronics module. The control panel here has maximum features Pushbuttons / Additional functions 3.4.1 Half load (optional) The “Half Load” function reduces water consumption and the running time.
  • Page 6: Programme Selector Switch

    3.5.6 Prerinse Programme selector switch The programme consists of a prerinse only. 3.5.1 Intensive 70° The programme consists of a prerinse at 50°, wash cycle at 70°, two Setting the hardness range intermediate rinse cycles, final rinse at 70° and a drying cycle. Until the temperature is reached, rinsing occurs in the bottom basket only.
  • Page 7: Components

    4.1.1 Regeneration electronics COMPONENTS The electronics determine, in comparison with the water hardness set Module on the appliance, the volume of water which is possible until the softening system is exhausted. The number of rinse cycles is counted. Regeneration then takes place once the maximum possible number of rinse cycles has been reached.
  • Page 8 4.1.5 Water supply The appliance realises that the tap is turned off if no signal is received from the flow sensor after 30 s. 4.1.6 Consumers The consumers such as the valves, the detergent and rinse aid dis- pensers and the circulation pump are actuated by triacs (see listing of triacs).
  • Page 9 4.1.8 Initial start-up / Replacing the electronics The following programme sequence must be taken into consideration during the initial start-up or when replacing the electronics. ( Programme counter = 0 ! ) Programme sequence during the initial start-up without heat ex- changer 815_58300000120057_ara_en_d.doc –...
  • Page 10: Actuator

    Actuator The thermohydraulic system consists of a metal cylinder with plunger. The cylinder is filled with a substance which expands greatly when heated. The heat source is a PTC (positive temperature coefficient) (1) which is in direct contact with the metal cylinder (4). A strong pressure spring (3) returns the plunger (6) back to its original position when the heat source is switched off.
  • Page 11: Aqua Sensor (Optional)

    48 programme structures are possible in the automatic programme. Aqua sensor (optional) In each programme sequence in which the Aqua sensor is active the sensor is also calbrated. If the calibration is defective, a fault is written to the fault memory of the module, the measurement is set to turbid and a maximum pro- gramme sequence occurs.
  • Page 12: Aqua Stop Valve

    Aqua Stop valve The Aqua Stop valve consists of two solenoid valves (A) in a row, the filler and safety valves. These valves are actuated in parallel. There are two filters on the screw connection for the tap. Under the filters is the flow limiter.
  • Page 13: Flow Sensor

    It consists of a housing, a turbine (1) with permanent magnets (4) and Flow sensor a board with reed switch (2). The flow sensor is integrated in the water supply and registers the The water sets the turbine (1) moving. The magnets (4) attached to amount of incoming water.
  • Page 14: Ntc

    The utilised temperature safety switch (>85 °C) is combined with the NTC sensor. If a fault occurs, the heater is switched off at a water temperature of 85 °C (operates in switching mode). Temperature in °C Resistance in kW Tolerance +/– °C 48.4 38.5 16.5...
  • Page 15: Salt And Rinse-Aid Indicators (Optional)

    Salt and rinse-aid indicators (optional) The dispenser contains a float with an integrated permanent magnet (A). The magnetic field actuates a reed switch on the outside of the dispenser. The lamps of the refill indicators in the control panel are switched on via this reed switch.
  • Page 16: Optical Low Rinse-Aid Sensor (Optional)

    Optical low rinse-aid sensor (optional) The optical low rinse-aid sensor consists of a transmitter diode and a receiver diode. A light beam is transmitted from the transmitter diode (A) to the receiver diode (B) via a prism (C). If the dispenser is full, the light beam in the prism is scattered.
  • Page 17: Dispenser

    Dispenser Dosing plunger Magnetic float Switching core Reed contact (optional) Actuator Optical sensor (optional) The release mechanism is activated by an actuator (C). When the actuator is actuated for the first time, the detergent-dispenser cover is opened. At the same time the release pawl engages with the switching core (B) of the rinse-aid lever so that when the actuator (C) is activated again, the dosing plunger (A) is lifted off the rinse aid.
  • Page 18: Water Softening System

    4.10.1 Water softening 4.10 Water softening system The inlet water with its hardness constituents is conveyed via the The water softening system (ion exchanger) is a container which synthetic resin. Calcium and magnesium are bonded to the surface of is filled with a fine-grained synthetic resin granulate. This synthetic the exchange compound while sodium ions are released into the resin replaces calcium and magnesium ions in the water with sodium water.
  • Page 19: Regeneration Valve

    4.11 Regeneration valve The regeneration valve is situated in the water softening system. If the regeneration valve is actuated, the water stored in the regeneration chamber is conveyed through the water softening system. Water softening system Regeneration valve Technical specifications: Designation Value Unit...
  • Page 20: Filter System

    4.12 Filter system The filter system consists of threefold filtration: ► Coarse filter ► Fine filter ► Surface filter The pump sump is covered by the surface filter (F). The surface filter (F) is attached together with the combined coarse (H) and fine filter (G) to the base of the pump sump (D) via a bayonet catch.
  • Page 21: Rinsing And Pumping System

    The circulation (D) and drainage pumps (H) as well as the 4.13 Rinsing and pumping system instantaneous water heater (C) are connected to the pump sump (G) via plug-and-socket connections. The instantaneous water heater (C) is also screwed securely to the pump sump (G). The filter system consists of fourfold filtration.
  • Page 22: Door Spring

    4.14 Door spring If the furniture doors are very heavy (e.g.: marble), the tensile force The door spring compensates for the weight of the furniture front. of the standard installed springs and maximum pretension of the spring tensioner is no longer adequate. In this case stronger door springs (see table) may be used.
  • Page 23: Circulation Pump (Sicasym)

    4.15 Circulation pump (SICASYM) The circulation pump is driven by a single-phase a.c. motor. The switching of the two motor windings with the motor capacitor is Technical specifications: actuated either via electronics or a relay on the motor connection Designation Value Unit via the module...
  • Page 24: Instantaneous Water Heater

    4.16 Instantaneous water heater Technical specifications: The instantaneous water heater is installed in the water circuit for the spray arms. When the detergent solution flows through the instan- Designation Value Unit taneous water heater, a rubber membrane (B) attached to the flange Nominal voltage 230–240 actuates the safety pressure switch (D) for the heating element (C).
  • Page 25: Detergent-Solution Pump

    4.17 Detergent-solution pump The detergent-solution pump is flange-mounted on the pump sump. It pumps the detergent solution out of the appliance. Technical specifications: Designation Value Unit Nominal voltage 230 - 240 Frequency Ω Resistor approx. 110 - 260 Delivery height Delivery capacity 815_58300000120057_ara_en_d.doc –...
  • Page 26: Level Sensor With Safety Function

    If the dishwasher controller or components malfunction, causing the 4.18 Level sensor with safety function machine to overfill, the valve combination is closed via the safety system, shutting off the water supply. The drainage pump is switched on via the safety level switch (A). Pumping continues until the safety level switch (A) switches back again.
  • Page 27: Water Inlet Without Heat Exchanger

    Water inlet without heat exchanger When the filler valve has been opened, the water flows through the flow sensor towards the integrated inlet via a free flow channel and into the regeneration chamber. When the regeneration chamber has been filled, the water flows through the water softening system via the overflow channel and then flows as soft water into the pump sump.
  • Page 28: Water Points

    4.19 Water points Technical specifications: The water points are responsible for alternate rinsing and for different rinsing pressures. They consist of a synchronous motor with gears, Designation Value Unit cam disc (B) , microswitch (A) and locking disc (C). The synchronous Nominal voltage (synchronous motor) 230–240 motor is actuated via a triac.
  • Page 29: Functions

    FUNCTIONS 3 in 1 detergents 5.1.1 Detection function If combined detergent products (e.g. 3 in 1) are used, the drying result will be worse. To improve the drying result, a special programme se- quence with less water is started in the intermediate rinse cycles. In addition, the final rinse temperature is increased by 3K (as for inten- sive drying).
  • Page 30: Repair

    If the module is not installed in the correct position, the optical fibres in the panel may break off. 6.1.1 At the bottom of the support plate (Bosch, Siemens, Neff) The module is attached at the indicated points. 815_58300000120057_ara_en_d.doc – 25.05.11...
  • Page 31: Replacing The Aqua Stop Valve

    Replacing the Aqua Stop valve ► Open the housing ► Disconnect the inlet hose ► Cut through the electric connecting cables ► Strip the insulation off the cable ends ► Push the shrink-fit hose over the cable ► Connect electric cables to the insulating sleeves (1.) ►...
  • Page 32: Worktop (Optional)

    Worktop (optional) 6.3.1 Removal Catch tappets are located on the rear right and left hand sides of the worktop. ► Press up the catch tappets ► Push back the worktop and lift off 6.3.2 Installation ► Insert worktop into the guide ►...
  • Page 33: Removing And Installing Dispenser

    Removing and installing dispenser 6.4.1 Removal Wear protective gloves; risk of cuts. ► Unscrew the outer door ► Leave top basket in the appliance and close the door ► Remove the electrical connections ► Using a screwdriver, lift the retention plates (A) stamped out of the inner door off the catches (B).
  • Page 34: Axial Flow Sensor

    6.4.3 Removal Axial flow sensor ► Remove the left side wall ► Remove securing clip (1) ► Pull the flow sensor (2) from the water inlet ► Loosen the hose clip (3) ► Remove supply hose (4). ► Remove connector plug from reed switch. 6.4.4 Installation ►...
  • Page 35: Removing And Installing Circulation Pump

    6.5.2 Installation Removing and installing circulation pump ► Prior to installation, lubricate the seal with washing-up liquid. 6.5.1 Removal ► Connect pump to the pump housing ► Remove side panels and base plate Leaks ► Loosen connection between stainless steel container and plastic base pan, (2 screws at front and 2 screws at rear) ►...
  • Page 36 6.5.4 Installing the slide ring seal Sluggish or blocked fan impeller ► Ensure that the spacer ring is re-attached to the motor shaft. ► Press slide ring seal into the pump housing ► Manually rotate fan impeller firmly onto the motor shaft ►...
  • Page 37: Detergent-Solution Pump

    6.6.2 Installation Detergent-solution pump ► Insert detergent-solution pump 6.6.1 Removal ► Rotate detergent-solution pump to rear until the locking lever engages ► Unscrew base panel and base plate ► Screw on base plate and base panel ► Press lever (1) to right and disengage ►...
  • Page 38: Removing And Installing Hinge

    Removing and installing hinge 6.7.1 Removal ► Unscrew outside door, base panel, angle strip and side panels. ► Detach tension cord (E) from hinge lever (B) ► Unscrew hinge lever (B) from the inner door ► Disengage bearing bush (C) and remove hinge lever (B) ►...
  • Page 39 6.7.2 Installation ► Insert spring clamp (D) into the hinge plate (A) ► Insert hinge plate (A) into the base pan ► Screw hinge plate (A) to the frame and base pan ► Insert hinge lever (B) with the bearing bush (C) into the hinge plate ►...
  • Page 40: Water Softening System

    6.8.2 Installation Water softening system Please note before and during installation 6.8.1 Removal ► Place the seal on the filler neck of the salt Unscrew outside door, base panel, angle strip and side panels. dispenser Detach the tension cords from the hinge levers ►...
  • Page 41: Instantaneous Water Heater

    6.9.2 Installation Instantaneous water heater The instantaneous water heater is installed in reverse sequence 6.9.1 Removal Unscrew outside door, base panel, angle strip and side panels. Detach the tension cords from the hinge levers. Unscrew the screws which connect the base pan to the hinge plates.
  • Page 42: Replacing The Door Seal

    6.10 Replacing the door seal The new seal must be adjusted prior to installation. Adjusting the seal ► Prior to insertion, ensure that the seal lip is pointing towards the middle of the rinsing tank, otherwise there will be leaks in the area of the door ►...
  • Page 43: Diagnosis Aids

    6.11 Diagnosis aids Transparent door: Material no.: 21 7116 – appliance dimension 81 cm Test prod: Material no.: 340730 (remove the components from the module before measuring the resistance) Protective gloves: Material no.: size 9 = 340728 size 10 = 340729 815_58300000120057_ara_en_d.doc –...
  • Page 44: Fault Diagnostics

    FAULT DIAGNOSTICS Draining Customer complaint Cause Remedial action Pump is running audibly, but Filter system blocked Advise customer, conveying no or little water see operating instructions for cleaning the filter. Clean the filter. Trap in the inlet spigot (pump sump) dirty. Advise customer.
  • Page 45: Odour

    Odour Customer complaint Cause Remedial action Smell of burning Power cord improperly extended Advise customer, follow safety instructions in the operating instructions Socket to which the appliance is connected is charred Advise customer; socket and power cord must (cause: socket has bad contact) be replaced Damaged windings or insulation fault on the consumers Measure consumers (test programme) and check...
  • Page 46: Noises

    Noises Customer complaint Cause Remedial action Striking noises on the water inlet in the pipe Installation or cross-section of the water Advise customer and refer to plumber system line (usually occurs on appliances which (have pressure reducing valve fitted). feature Aqua Stop valve because the valve is connected directly to the tap) Rattling noises during the rinse cycle Spray arm is striking the utensils...
  • Page 47: Rinsing Result

    Rinsing result Food remnants or sandy residue Limescale (Analyse with diagnosis case 340070 / 10 % hydrochloric acid) Starch deposits (Analyse with diagnosis case 340070 / iodine solution) Water-soluble or regeneration salt residue (Analyse with diagnosis case 340070 / dest. water) Discoloration / colour residue (e.g.
  • Page 48 Food remnants or sandy residue (see additional information in general repair instructions) Customer complaint Cause Remedial action Food remnants or sandy Rough, micro or fine sieve blocked, sieve not locked in the Advise customer, sieve insert and care residue pump sump –...
  • Page 49 Customer complaint Cause Remedial action Food remnants or sandy Snorkel noises; circulation pump does not run uniformly, Check level sensor function (implement filling residue insufficient water in the appliance (note: intervals approx. process) 1 min if using alternate rinsing technology) Non-return valve leaking, dirty water flows back into the Remove non-return valve, check valve and seat for appliance...
  • Page 50 Limescale (see additional information in the general repair instructions) Customer complaint Cause Remedial action Limescale on the utensils Hardness range incorrectly set or untreated water hardness > Adjusting hardness range 50 °dH, check residual hardness in the wash and final rinse Advise customer, use phosphatic detergent.
  • Page 51 Starch deposits (see additional information in the general repair instructions) Customer complaint Cause Remedial action Starch deposits on the Underdosing of detergent (wrong detergent) Advise customer, use enzyme detergent utensils Wrong programme selected Advise customer, select correct programme (too weak programme selected) Appliance connected to hot water, water inlet temperature too Check hot water connection (setpoint: lower than high...
  • Page 52 Water-soluble or regeneration salt residue on the dishes (see additional information in the general repair instructions) Customer complaint Cause Remedial action Water-soluble residue Regeneration salt on the utensils – Leaking salt dispenser cover (check screw-fitting, Advise customer, eliminate leaks regeneration dispenser is dispensing slowly) –...
  • Page 53 Discoloration / colour residue (see additional information in the general repair instructions) Customer complaint Cause Remedial action Colour residue Insufficient detergent used Advise customer, increase amount of detergent Plastic discoloration by, e.g.: tomato remnants, tea, Use detergent containing chlorine bleach. coffee, etc.
  • Page 54 Detergent residue (see additional information in the general repair instructions) Customer complaint Cause Remedial action Detergent residue Detergent cover blocked by utensils Advise customer, dishwasher not loaded properly (does not open fully) Detergent cover does not open fully Replace spring of dispensing device Wrong programme selected Advise customer Tablets used in quick or short programme...
  • Page 55 Damage to utensils (see additional information in the general repair instructions) Customer complaint Cause Remedial action Initial or already Hardness range set too high, residual hardness in wash Optimise setting according to measurement irreversible glass clouding cycle or final rinse < 5° dH Glasses not dishwasher-proof Advise customer (glasses are usually only suitable for dishwasher)
  • Page 56: Drying Result

    Drying result Customer complaint Cause Remedial action Not drying correctly No rinse aid in the dispensing device Advise customer Appliance not heating Check heating circuit according to circuit diagrams, note pressure switch on the instantaneous water heater (the circulation pump cannot build up adequate pressure if there is insufficient water in the appliance).
  • Page 57: Circulation Pump

    Circulation pump Customer complaint Cause Remedial action Circulation pump does not start After a prolonged idle time the seal set may stick to the pump wheel. The seal set must be replaced 815_58300000120057_ara_en_d.doc – 25.05.11 Seite 57 von 60...
  • Page 58: Control Unit/Module/Cable Harness

    Control unit/module/cable harness Before replacing a module, start the customer service test programme. Customer complaint Cause Remedial action Running time too long Alternating rinse technology, energy saving Advise customer, See Consumption rates Alternate rinsing technology Component is not actuated Triac on the module does not switch properly, Before replacing the module, always measure the smoke traces may be visible on the module...
  • Page 59: Technical Specifications

    TECHNICAL SPECIFICATIONS General technical specifications Voltage / frequency 230–240 V / 50 Hz Connected load 2.3 kW Heat output 2.15 kW Fuse 10 / 13 A 815_58300000120057_ara_en_d.doc – 25.05.11 Seite 59 von 60...
  • Page 60: Seite 1 Von

    Consumption rates 8.2.1 Appliance with water points and without a heat exchanger Intensive 70° Auto 55–65° Normal 65° Eco 50° Gentle 40° Quick 45° Quick 35° Prerinse Duration in min. 95–140 with a half load 95–125 Current consumption in kWh 1.40 1.00–1.35 1.35...