Bosch SRS4002GB Repair Instruction Download

Page: 57 / 60

7.8 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,

58300000002393_ara_en_a.doc – 31.07.07

Seite 57 von 60

Summary of Contents for SRS4002GB

Page 1: ... functions 6 4 13 Rinsing and pumping system 31 3 4 General information on control 7 4 14 Door spring 32 3 5 Function 10 4 15 Circulation pump 33 3 6 Programme reset 10 4 16 Detergent solution pump 34 3 7 Special functions 11 4 17 Level sensor with safety function 35 3 8 General information on control 11 4 18 Spray system 36 3 9 Function 14 4 19 Water inlet without heat exchanger 37 3 10 Programme...

Page 2: ... Draining 45 7 4 Odour 46 7 5 Noises 47 7 6 Rinsing result 48 7 7 Drying result 56 7 8 Circulation pump 57 8 TECHNICAL SPECIFICATIONS 58 8 1 General technical specifications 58 8 2 Consumption rates 59 8 3 Consumption rates 60 58300000002393_ara_en_a doc 31 07 07 Seite 2 von 60 ...

Page 3: ...e conduct a test in accordance with VDE 0701 or the corresponding national regulations When repairs are complete perform a function and leak test WARNING Comply with the following instructions If conducting the test in accordance with VDE 0701 via the connector the heater instantaneous water heater must be tested directly for insulation faults due to all pole disconnection relays pressure switch o...

Page 4: ... standing 2 2 Electrical connection Connect the appliance to a correctly installed earthed socket only Comply with the specifications on the rating plate 2 3 Water connection If the appliance is connected to the drain with the standard hose length the max permitted height from the floor is 90 cm If the drainage hose is extended a max height of 80 cm must not be exceeded The water connection inch r...

Page 5: ...he aqua sensor decision the programme consists of Wash cycle at 50 one intermediate rinse cycle final rinse at 65 and a drying cycle Wash cycle at 65 two intermediate rinse cycles final rinse at 65 and a drying cycle Prerinse wash cycle at 55 one intermediate rinse cycle final rinse at 65 and a drying cycle ECO 50 The programme consists of a wash cycle at 50 one intermediate rinse cycle final rins...

Page 6: ...tch on the appliance The set value is indicated on the digital display The set value increases by one each time the S3 button is pressed When 7 is reached the display jumps back to 0 If the appliance is switched off the value is saved Standard setting 4 3 3 2 Setting the intensive drying Hold down the S2 button and switch on the appliance 0 is indicated on the digital display If the S2 button is p...

Page 7: ...rying phase is not filled In order to ensure the temperature difference required for condensation the temperature in the final rinse cycle is increased to 72 C thereby increasing the inherent heat of the dishes 3 4 4 Memory electronics The electronics module has its own memory which remembers the programme last selected If no new selection is made at the start of the programme the programme last s...

Page 8: ...at the actuated component is also checked Front Rear R5 Filling level R6 Filling level TY6 Heat exchanger outlet valve TY7 Dispenser actuator TY8 Regeneration valve TY9 Filler valve TY11 Actuator for top basket valve water points 58300000002393_ara_en_a doc 31 07 07 Seite 8 von 60 ...

Page 9: ...th heat exchanger Programme counter Programme counter Pump 15 sec Salt refill indicator Filler valve on 10 sec Regenerate 60 sec Increase loop counter by 1 Check counter PZ 0 PZ 0 Salt refill OFF Salt refill ON PZ 3 PZ 3 Start rinse programme Pump 15 sec Salt refill indicator Pump outlet valve 70 sec Regenerate 60 sec Increase loop counter by 1 Check counter Prefill heat exchanger up to F1 PZ 0 Sa...

Page 10: ...al rinse at 69 and a drying cycle ECO 50 The programme consists of a wash cycle at 50 one intermediate rinse cycle final rinse at 66 and a drying cycle Gentle 40 The programme consists of a prerinse cycle a wash cycle at 40 one intermediate rinse cycle final rinse at 55 and a drying cycle Quick 35 The programme consists of a wash cycle at 35 one intermediate rinse cycle final rinse at 55 without d...

Page 11: ...r hardness set on the appliance the number of rinse cycles which are possible until the softening system is exhausted The number of rinse cycles are counted Regeneration then takes place once the maximum possible number of rinse cycles has been reached The sequence characteristics of the regeneration electronics are described under 3 4 8 Initial start up Replacing the electronics 3 8 3 Warm water ...

Page 12: ...nents such as the drainage pump the valves the detergent and rinse aid dosage are controlled by triacs The circulation pump and the instantaneous water heater are switched on by relays R5 Filling level R6 Filling level TY6 Not assigned TY7 Dispenser actuator TY8 Regeneration valve TY9 Filler valve TY11 Actuator for top basket valve water points Front Rear 58300000002393_ara_en_a doc 31 07 07 Seite...

Page 13: ...nitial start up or when replacing the electronics Programme counter 0 Programme counter Pump 15 sec Salt refill indicator Filler valve on 10 sec Regenerate 60 sec Increase loop counter by 1 Check counter PZ 0 PZ 0 Salt refill OFF Salt refill ON PZ 3 PZ 3 Start rinse programme 58300000002393_ara_en_a doc 31 07 07 Seite 13 von 60 ...

Page 14: ...e programme consists of a prerinse a wash cycle at 65 two intermediate rinse cycles final rinse at 69 and a drying cycle ECO 50 The programme consists of a wash cycle at 50 one intermediate rinse cycle final rinse at 62 and a drying cycle Gentle 40 The programme consists of a prerinse cycle a wash cycle at 40 one intermediate rinse cycle final rinse at 55 and a drying cycle Quick 35 The programme ...

Page 15: ...the appliance the volume of water which is possible until the softening system is exhausted The volume of water which has run through is calculated Regeneration then takes place once the maximum possible number of rinse cycles has been reached The sequence characteristics of the regeneration electronics are described under Initial start up Replacing the electronics General information If the new c...

Page 16: ...s are recorded and evaluated by the microprocessor at the required time 3 12 8 Components The components such as the valves the detergent and rinse aid dispensers actuator are actuated by triacs see photo The circulation pump drainage pump and the instantaneous water heater are switched on by relays 3 12 9 Initial start up Replacing the electronics The following programme sequence must be taken in...

Page 17: ...nerate 60 sec Increase loop counter by 1 Check counter Prefill heat exchanger up to F1 PZ 0 Salt refill OFF Salt refill ON PZ 3 PZ 3 Start rinse programme PZ 0 Programme counter Pump 15 sec Salt refill indicator Filler valve on 10 sec Regenerate 60 sec Increase loop counter by 1 Check counter PZ 0 PZ 0 Salt refill OFF Salt refill ON PZ 3 PZ 3 Start rinse programme 58300000002393_ara_en_a doc 31 07...

Page 18: ...0 65 The programme consists of a wash cycle at 60 65 one intermediate rinse cycle final rinse at 65 and a drying cycle Eco 60 65 The programme consists of a wash cycle at 60 65 one intermediate rinse cycle final rinse at 65 and a drying cycle Prerinse The programme consists of a cold rinse only 3 14 Terminating the programme Switch off the main switch to drain residual water from inside the applia...

Page 19: ...t to the wax filled metal cylinder The wax expands and forces the plunger out of the cylinder The plunger transfers the mechanical movement to the release mechanism for dispensing the detergent and rinse aid If the heat source is switched off the volume of wax is reduced by the cooling process The pressure spring returns the plunger back to its original position The actuation time is approx 2 min ...

Page 20: ...hotodiode The absent voltage signal is detected by the microcomputer Depending on the programme type the water is changed after the prerinse or even the washing temperature is changed If the turbidity value is not reached the water remains in the rinsing tank for the wash cycle In each programme sequence in which the Aqua sensor is active the sensor is also calibrated If a calibration cannot be im...

Page 21: ...losed by a housing is attached to the tap The housing is connected to the base pan by a leakage water hose sleeve of the inlet hose The water inlet hose which connects the valve to the water inlet and the electrical control line for the solenoid valve are located inside this leakage water hose Technical specifications Nominal voltage 230 240 V Frequency 50 Hz Resistance 2 kΩ Flow rate 2 75 l min W...

Page 22: ...t hose over the cable connect the wires to the insulating sleeves 1 After fitting warm the connectors until the shrinkage process occurs and the hot melt adhesive comes out of the ends of the connectors 2 Push the shrink fit hose over the connectors and also warm until the shrinkage process is complete 3 58300000002393_ara_en_a doc 31 07 07 Seite 22 von 60 ...

Page 23: ...op back and lift off 4 5 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 25 48 4 7 9 30 38 5 7 1 50 16 5 6 2 60 11 0 5 6 65 9 1 5 5 58300000002393_ara_en_a doc 31 07 07 Seite 23 von 60 ...

Page 24: ...permanent magnet 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 A Permanent magnet B Reed switch open C Reed switch closed 58300000002393_ara_en_a doc 31 07 07 Seite 24 von 60 ...

Page 25: ... the hinge plate off the frame pull the hinge up and out remove spring clamp Two piece hinge bearing bush Open the bearing bush by disengaging the spacer with a screwdriver see sketch One piece hinge bearing bush Open the bearing bush by bending up the catches with a screwdriver When the bearing bush is removed it must be renewed A Hinge plate E Tension cord B Hinge lever F Tension spring C Bearin...

Page 26: ...ilised temperature safety switch 85 C is combined with the temperature controller 65 C If a fault occurs the heater is switched off at a water temperature of 85 C operates in switching mode 58300000002393_ara_en_a doc 31 07 07 Seite 26 von 60 ...

Page 27: ...ecifications Removal Unscrew the outer door Disconnect the power Using a screwdriver lift the retention plates stamped out of the inner door off the catch tappets Note Adjust the retention plates to the middle before installing the dispenser to ensure that all the catch tappets lock securely Before installing the seal lubricate with washing up liquid A Dosing plunger D Magnetic float B Switching c...

Page 28: ...tch on the level sensor housing and the water softening system separate the circulation pump with the rubber support from the base pan remove the base pan until the water softening system can be pulled off the plug and socket connections on the water inlet and the level sensor housing pull out the reed switch Note 1 The following work must be carried out before the water softening system is instal...

Page 29: ...hamber is conveyed through the water softening system If the drainage valve is actuated the water stored in the heat exchanger HE is conveyed into the rinsing tank via the water softening system Technical specifications Nominal voltage 230 240 V Frequency 50 Hz Resistance 2 45 kΩ A Water softening system B Regeneration valve C HE drainage valve 58300000002393_ara_en_a doc 31 07 07 Seite 29 von 60 ...

Page 30: ... is covered by the surface fine filter The surface fine filter is attached with the combined coarse and fine filter cylinders to the base of the pump sump via a bayonet catch A Lower spray arm F Surface filter B Supply pipe to upper spray arm G Fine filter C Rinsing tank H Coarse filter D Pump sump I Hinged cover optional E Micro filter 58300000002393_ara_en_a doc 31 07 07 Seite 30 von 60 ...

Page 31: ...cted in series disconnects the appliance at 85 C to prevent overheating In mechanically controlled appliances this temperature switch is combined with a 65 C temperature controller and housed in one module in electronically controlled appliances it is combined with an NTC sensor negative temperature coefficient and housed in one module The sensor surface is in direct contact with the detergent sol...

Page 32: ... heavy e g marble the tensile force 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 If furniture doors are very light the door springs can also be replaced by lighter ones The door springs must be replaced in pairs only The maximum weight of the furniture door is approx 8 kg Spring force...

Page 33: ...om the base module The circulation pump is locked in position Using a screwdriver press in the catch on the right side of the circulation pump and rotate the pump in a clockwise direction The pump can then be removed Installation is in reverse sequence Prior to installation lubricate the seal with washing up liquid Technical specifications Rated voltage 230 240 V Frequency 50 Hz Resistance Ha appr...

Page 34: ...remove the detergent solution pump disengage the lever 1 then rotate the pump forwards 2 The pump can be removed by rotating it through approx one quarter of a revolution 3 Technical specifications Nominal voltage 230 240 V Frequency 50 Hz Resistance 110 260 Ω Delivery head 0 9 m Conveying capacity 10 l min 58300000002393_ara_en_a doc 31 07 07 Seite 34 von 60 ...

Page 35: ...n the base pan the float uses a switch lever to actuate the safety level switch which then electrically switches off the filling and safety valve At the same time the drainage pump is switched on the detergent solution is removed from the rinsing tank and the drainage pump switches to continuous operation A Level switch G Air chamber B Safety level switch H Restricting funnel for appliances with h...

Page 36: ...The upper spray arm is attached by its inlet pipe directly to the top basket Connection to the supply pipe is by a variable coupling If appliances feature a height adjustable top basket the water inlet to the spray arm is adjusted via this variable coupling The lower spray arm is connected with its bearing assembly to the second outlet of the instantaneous water heater directly via the pump sump a...

Page 37: ...water softener requires regeneration Before each regeneration step the electronics check whether the capacity of the water softener is adequate for a complete Normal Programme Sequence If not regeneration starts The water softening system is regenerated and rinsed through during the wash cycle The regeneration valve on the water softening system is opened for this purpose The stored volume of wate...

Page 38: ...tion and the circulation pump is switched on When the circulation pump starts up the level pressure switch switches back Filling continues dynamically until the level switch is re actuated the rinsing level has then been reached Fill to static level Fill to dynamic level Level switch F1 Filler valve Circulation pump 58300000002393_ara_en_a doc 31 07 07 Seite 38 von 60 ...

Page 39: ...ics counter which determines when the water softener requires regeneration Before each regeneration step the electronics check whether the capacity of the water softener is adequate for a complete Normal Programme Sequence If not regeneration starts The water softening system is regenerated and rinsed through during the wash cycle The regeneration valve on the water softening system is opened for ...

Page 40: ... water inflow for the rinse programme this volume of water compensates for the loss of water which is used to wet the dry utensils The circulation pump is guaranteed to run true and water is saved in the subsequent filling baths The circulation pump is switched on time delayed the drainage valve remains open until the heat exchanger has emptied completely Level switch f1 Filler valve Outlet valve ...

Page 41: ...5 FUNCTIONS See Components 58300000002393_ara_en_a doc 31 07 07 Seite 41 von 60 ...

Page 42: ...ial 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 58300000002393_ara_en_a doc 31 07 07 Seite 42 von 60 ...

Page 43: ... technology energy saving Triac on the module does not switch properly smoke traces may be visible on the module Advise customer See Consumption rates or Alternate rinsing technology Before replacing the module always measure the connected consumers valves actuators etc Follow safety instructions 58300000002393_ara_en_a doc 31 07 07 Seite 43 von 60 ...

Page 44: ...switch properly smoke traces may be visible on the module Mains plug Advise customer See Consumption rates or Alternate rinsing technology Before replacing the module always measure the connected consumers valves actuators etc Comply with safety instructions The plug repair set mat 480937 can be used for defective connections on electronic controllers 58300000002393_ara_en_a doc 31 07 07 Seite 44 ...

Page 45: ...ater inlet to check remove both drainage hoses Pump is buzzing audibly Pump mechanically blocked blocked or damaged pump Clean pump or if required remove pump Pump is not running See also pump is buzzing or running audibly Water tap was closed when dry the heat exchanger was still empty the filling switch is waiting for level The pump is not activated Advise customer wait for programme sequence an...

Page 46: ...to circuit diagram Follow safety instructions Eradicate creepage distance and transition resistance look out for leaks high current cables must not be extended Advise customer Customer specifies the chemicals if required change product with citrus aroma or recommend aroma dispenser mat no 460742 Advise customer concerning the new aroma Advise customer Smell of decay Permanent underdosage of deterg...

Page 47: ...lve is connected directly to the tap Advise customer and refer to plumber have pressure reducing valve fitted Rattling noises during the rinse cycle Spray arm is striking the utensils Advise customer utensils not arranged properly Alternating noises in the rinse programme Alternate pumping detergent solution pump and circulation pump are actuated alternately Advise customer 58300000002393_ara_en_a...

Page 48: ...olution Water soluble or regeneration salt residue Analyse with diagnosis case 340070 dest water Discoloration colour residue e g tea tomato juice coffee lipstick etc analyse with diagnosis case 340070 chlorine bleach Detergent residue Analyse with diagnosis case 340070 dest water Water insoluble residue damage to utensils 58300000002393_ara_en_a doc 31 07 07 Seite 48 von 60 ...

Page 49: ...age or insufficient dosage wrong programme selected Unfavourable arrangement of the dishes etc very large pieces in the lower rack e g pots avoid holders dish racks twisted Spray arm is blocked by dishes or cutlery Advise customer sieve insert and care Clean parts if necessary refer customers to correct sieve insert Clean parts if necessary refer customers to correct sieve insert Clean Advise cust...

Page 50: ... sensor function implement filling process Remove non return valve check valve and seat for dirt and if required clean Check circulation pump 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 Blockage in the rinse cycle of the top basket pl...

Page 51: ... regenerate Untreated water valve does not open appliance is filled with untreated water only Adjusting hardness range Advise customer use phosphatic detergent Adjust regeneration position and conduct performance test observe drainage of regeneration dispenser Check regeneration valve carefully mechanical valve stem electrical actuation coil Check untreated water valve mechanical valve stem electr...

Page 52: ...gent wrong detergent Wrong programme selected too weak programme selected Appliance connected to hot water water inlet temperature too high Advise customer use enzyme detergent Advise customer select correct programme Check hot water connection setpoint lower than 60 C advise customer if required connect to cold water 58300000002393_ara_en_a doc 31 07 07 Seite 52 von 60 ...

Page 53: ...neration dispenser is dispensing slowly Leaking regeneration valve regeneration dispenser is dispensing slowly Regeneration valve continuously actuated Initial clouding of glass can only apparently be wiped off Detergent solution carry over Combination product Advise customer eliminate leaks Check valve and or valve seat Electrical check with circuit diagrams See Damage to utensils See Food remnan...

Page 54: ...ort running time and at low temperatures Silicate deposits only on glasses not to be removed Final rinse dosing set too high can be rinsed off with water Discoloration due to sulphur compounds in the air and in various food remnants Advise customer increase amount of detergent Use detergent containing chlorine bleach Recommend machine detergent for discoloration in the appliance Advise customer st...

Page 55: ...er or cutlery basket Spray arm nozzles blocked filters locked Dispensing device in spray shadow large pan etc positioned at bottom left Check draining non return valve Detergent very lumpy washing effect and dissolving performance reduced Advise customer dishwasher not loaded properly Replace spring of dispensing device Advise customer Tablet dissolving time is too long Advise customer follow inst...

Page 56: ... exchanger if required connect the appliance to cold water supply 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 Advise customer quick programme is without drying cycle drying level option is too low Advise customer tablet is unsuitable ...

Page 57: ...ustomer 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 58300000002393_ara_en_a doc 31 07 07 Seite 57 von 60 ...

Page 58: ...TECHNICAL SPECIFICATIONS 8 1 General technical specifications Voltage frequency 230 240 V 50 Hz Connected load 2 3 kW Heat output 2 15 kW Fuse 10 13 A 58300000002393_ara_en_a doc 31 07 07 Seite 58 von 60 ...

Page 59: ... auto 55 65 Normal 65 Eco 50 Gentle 40 Quick 35 Prerinse Duration in min 109 100 140 104 155 75 30 20 Current consumption in kWh 1 35 0 75 1 05 1 15 0 8 0 65 0 5 0 1 Water consumption in litres 20 12 18 17 13 14 10 4 Intensive 70 auto 55 65 Normal 65 Eco 50 Gentle 40 Quick 35 Prerinse Duration in min 103 95 140 98 155 71 30 20 Current consumption in kWh 1 40 1 00 1 35 1 20 0 8 0 70 0 5 0 1 Water c...

Page 60: ... start of the series Intensive 70 auto 55 65 Normal 65 Eco 50 Gentle 40 Quick 35 Prerinse Duration in min 103 100 135 98 155 71 30 20 Current consumption in kWh 1 4 1 0 1 3 1 2 0 8 0 7 0 5 0 1 Water consumption in litres 20 12 18 17 13 14 10 4 Intensive 70 Normal 65 Eco 50 Quick 35 Prerinse Duration in min 105 102 140 29 13 Current consumption in kWh 1 5 1 3 0 95 0 6 0 12 Water consumption in litr...

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Bosch SRS4002GB, Repair Instruction

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