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Bosch SHE55P Repair Manual

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1
SAFETY .................................................. 2
1.1
General hazards ...........................................................2
1.2
Electrical shock / fire hazards.....................................2
1.3
Plumbing / scalding hazards.......................................2
2
INSTALLATION ...................................... 3
2.1
Pre-Install checklist .....................................................3
2.2
Alignment .....................................................................3
2.3
Electrical connection ...................................................4
2.4
Water connection .........................................................4
2.5
3
OPERATION ........................................... 6
3.1
Control layout...............................................................6
3.2
3.3
3.4
3.5
Dispenser......................................................................9
4
COMPONENTS..................................... 10
4.1
Dishwasher components...........................................10
4.2
Operation ....................................................................26
4.3
Serial label (warranty information) ...........................26
5
REPAIR................................................. 28
5.1
Water valves ...............................................................28
5.2
Circulation pumps......................................................28
5.3
Controls ......................................................................31
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5.4
Heaters........................................................................32
5.5
2-piece drain hose connection .................................34
5.6
Drain pump removal and installation .......................34
5.7
Door latch removal and installation .........................34
6
FAULT DIAGNOSTICS......................... 36
6.1
Customer service test program ................................36
6.2
Troubleshooting.........................................................38
7
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  • Page 1: Table Of Contents

    SAFETY ..........2 Heaters................32 2-piece drain hose connection .........34 General hazards ............2 Drain pump removal and installation .......34 Electrical shock / fire hazards........2 Door latch removal and installation ......34 Plumbing / scalding hazards........2 FAULT DIAGNOSTICS......36 INSTALLATION ........3 Customer service test program ........36 Pre-Install checklist .............3 Troubleshooting............38 Alignment ..............3...

  • Page 2: Safety

    SAFETY The customer has the responsibility of ensuring that the dishwasher electrical installation is in compliance with all national and local electrical codes and ordinances. The dishwasher is General hazards designed for an electrical supply of 120VAC, 60 Hz, connected to a dishwasher-dedicated, properly grounded electrical circuit with Don’t use the dishwasher until it is completely installed.

  • Page 3: Installation

    INSTALLATION Pre-Install checklist □ Unpack unit. Retain packing material until installation is successful. Remove packing material from inside the dishwasher. □ Inspect parts to ensure you have all the necessary materials. If your dishwasher has pre-attached mounting brackets and you □...

  • Page 4: Electrical Connection

    Electrical connection Water connection Install according to national and local codes. Install according to national and local codes. Carefully place dishwasher on its back to make electrical Carefully place dishwasher on its back to make water connections to the terminal block. Turn power off at the fuse box. connections to the water inlet valve.

  • Page 5: Drain And Condensation Hose Connections

    Drain and condensation hose connections Plumbing installations will vary - refer to local codes. The maximum length of the drain hose, including leading to an air gap (if any) is 150" (381 cm). Make sure a high loop is raised at least 20"...

  • Page 6: Operation

    OPERATION 3.1.2 SHX / SHV models Control layout 3.1.1 SHE models SHX46A SHE55P SHV66A SHE43P15 3.1.3 Features The Sanitized light comes on after certain wash programs have finished, showing dishes have been sanitized according to NSF standards. Check the Use & Care manual for your model to confirm which programs qualify as NSF rated.

  • Page 7: Reset ("Cancel - Drain")

    Reset (“Cancel – drain”) 3.3.2 End of cycle tone The End of cycle tone volume can also be changed. To reset, push Cancel-Drain or Cancel-Reset buttons at the same time.  Turn the dishwasher off and then push and hold the right Cancel Reset button while turning the dishwasher on –...
  • Page 8 While pushing (and holding) any two wash cycle buttons, turn the displays. Whenever you get call about a “strange” display, check dishwasher on with the on/off switch. The current coding (e.g. if the customer put the dishwasher into the test program or some “C1”) will show in the display or LED's until you release the other program.

  • Page 9: Dispenser

    Push button “B” repeatedly until the display shows the original dishwasher code (e.g. “C1”, “C2”, etc). Push button “C” to confirm it. Turn power off and then back on. The dishwasher now has it’s original coding. Reconnect the pump and heater that was previously disconnected.

  • Page 10: Components

    COMPONENTS 4.1.3 Heater 4.1.3.1 Operation Dishwasher components Bosch dishwashers use flow-through heaters instead of exposed 4.1.1 Tank elements, saving space and allowing taller tanks holding larger dinner plates. Flow-through heaters prevent dishware damage The tank, made of 304 stainless steel, isn’t available as a service from exposed elements and allow water to be continuously part.
  • Page 11 4.1.3.3 Softer bearing (UC/11 and later) 4.1.3.4 Top Rack Only Softer bearing (UC/11 and later) & non-softer bearing (UC/06) Models with Top Rack Only have separate actuators mounted heater assemblies, circulation pumps and sumps cannot be underneath heater assemblies. The actuator moves a magnetic mixed and matched.
  • Page 12 They consist of a motor-controlled disk with 3 holes which rotates and lines up over two sump ports (upper / lower Bosch dishwashers use separate circulation and drain pumps to spray arms) to provide precise water control to upper, lower or reduce overall size, noise, vibration and energy consumption.
  • Page 13 4.1.4.1 “Sisme” (UC/06 through UC/23) 4.1.4.2 “Sisme” pump with PTC motor starter It has a capacitor start motor with a centrifugal switch cutting out Pump # 437345 pump is more powerful for use with heaters with the starting capacitor once the motor comes up to speed. This water switches and sumps with extra filter cylinder.
  • Page 14 4.1.4.4 BLDC (UC/46 through present) 4.1.6 Drain pump Pump, motor and control come as one unit (# 665510). Speed Drain pumps are mounted to sumps in the front of dishwashers -- changes as needed for wash cycle and washability (Vario wash). they’re easily accessible from the front of dishwashers by Pump is isolated from motor, so there’s no seal needed and no removing toe kicks.
  • Page 15 4.1.6.3 Cavitating 4.1.6.5.1 Spade terminals (UC/42 and before) Cavitating may occur in any type of pump when impellers spin Wire harnesses to drain pumps have locking spade terminals, faster (from low inlet or outlet pressure), creating air pockets which must be released using a small blade screwdriver. around impellers.
  • Page 16 4.1.6.6 Johnson Tee installations (Washington State) During normal fill, rising water compresses air in a chamber until the diaphragm operates when the proper water level is reached. Drain pumps in installations with Johnson Tees (in Washington If water overfills, the float (shown in below) stops the water fill State) must use stronger 4-vane pumps (# 184178 spade / and operates the drain pump.
  • Page 17 4.1.7.2 Time fill 4.1.8 Condensation tube The time-fill water inlet system is similar to the pressure-fill The condensation tube is crucial for condensation drying, which system, except it doesn’t have a diaphragm or water level switch. dries dishes without a heating element in the bottom of the tank. Dishwasher controls allow water to fill for a specific time, relying Starting with UC/12, condensation tubes were moved from the on consistent water flow through the water inlet valve to provide...
  • Page 18 4.1.9 Door spring Dishwashers with wood doors have adjusting screws to change spring tension for different wooden door panel weights. Tighten screws (cw) to increase spring tension and loosen screws (ccw) 4.1.9.1 Using hinge pulley to reduce tension. The door spring mechanism allows dishwasher doors to open / Dishwashers with heavy or light wood doors will need door close with little effort and to stay open when racks are loaded or springs changed.
  • Page 19 4.1.9.2 Using hinge slider (sliding pulley) 4.1.10 Hinge bushing During FD 8910, hinge pulleys were replaced with hinge sliders Hinge bushings hold doors in place (at hinges). Older hinge (sliding hinge pulleys). Instead of rolling over rotating pulleys, bushings used a separate lock. Newer hinge bushings have door spring cords slide over pulley sliding surfaces.
  • Page 20 4.1.11 Water inlet valve 4.1.13 Door latch Dishwashers use standard horizontal coil water inlet valves. Other than occasional misalignment, the Dishwashers UC/43 and later have valves with (Rast 5) only door latch repairs will be replacing connectors. The valve nestles in the left side of the base and is microswitches.
  • Page 21 4.1.15 Terminal box 4.1.17 Dispenser Since 9/23/02, all dishwashers have terminal boxes (“junction The dispenser is located near the top of the inner door and boxes” / ”J-boxes”) with covers. Boxes were upgraded to a larger reliably dispenses detergent and rinse-aid. style (with conduit exits) on 3/18/03.
  • Page 22 4.1.17.1 Reed switch dispensers 4.1.17.2 Optical dispensers Optical dispensers are connected differently and can’t replace reed switch dispensers. With rinse-aid present, the optical receiver senses a diffused light beam. The white plastic linkage opens the detergent dispenser door, then cocks in place to dispense rinse-aid when the wax motor operates again.
  • Page 23 4.1.17.3 Top load dispensers 4.1.18 Aqua sensor 431413 top-load dispensers enable detergent and rinse-aid to be The aqua sensor is located behind the sump, to the left of the added while doors are partially open (preferably @ 45º). The heater. It’s a two-piece assembly, with a small circuit board in a dispensing mechanism uses a solenoid instead of an actuator plastic housing).
  • Page 24 4.1.19 Display and power modules 4.1.20 Sump parts Dishwashers can have from one to three controls, depending on 4.1.20.1 Sump the model: a control module (in the fascia / control panel), a display module with display, lights & buttons (in the fascia / The sump contains a filter screen, large item (coarse) filter and control panel) and a power module in the base on the right side.
  • Page 25 4.1.20.2 Backflow (check) valve 4.1.20.3 Spray arm feed tube The backflow (check) valve is located in the bottom of the sump When water doesn’t spray from upper spray arms, check feed near the circulation pump inlet. It prevents waste water from tube where it enters the sump.

  • Page 26: Operation

    Operation Serial label (warranty information) The serial label, located on the right side of the inner door, 4.2.1 Water circulation contains the dishwasher model, serial and index (KI) #’s. The circulation pump pumps water from the sump through a triple filter system to the heater.
  • Page 27 4.3.2 Understanding the 17-digit factory serial # This is a more detailed serial # used by the factory for analysis of returned units. It’s located in the bottom right corner of the label. 10 3 03 0081344 00011 5 The first 2 #’s represent a factory code: 10 = New Bern •...

  • Page 28: Repair

    REPAIR solenoids, the plastic can crack and cause leaking if excessive force is used.  Using Teflon tape on water fittings can help prevent Water valves leaking.  The water valve can be accessed without removing outer Access the water valve from the front of the dishwasher base by door or base cover.
  • Page 29 5.2.2 To remove toe kick 5.2.4 To raise tank for circulation pump access Tools needed: T20 Torx screwdriver. Tools needed: T20 Torx screwdriver and pliers. 1. Remove two T-20 Torx screws from toe kick (1). 1. Remove one T-20 Torx screw from both rear corners holding tank to base (1) -- removing screw from both sides 2.
  • Page 30 5.2.5 To remove complete Sisme pump 5.2.6 To install impeller kit # 167085 Tools needed: flat blade screwdriver. Tools needed: flat blade screwdriver. 1. Disconnect wire harness from motor after carefully noting 1. While holding motor fan so shaft won’t spin (1a), unscrew connections (1).

  • Page 31: Controls

    Controls 5.3.2 Base mounted controls Base mounted controls are located on the base between 5.3.1 Fascia panel mounted controls circulation pumps and heaters, not behind fascia panels. So: Controls are easily removed from fascia panels by bending  Dishwashers must be pulled out to change controls. console tabs.

  • Page 32: Heaters

    Heaters The heater & NTC can be accessed or measured from the right side of the dishwasher, but can only be removed by dropping the entire base (by flipping the dishwasher on its back) since they are wedged underneath the tank. 5.4.1 For access to heaters &...
  • Page 33 3. Remove terminal blocks (for two-piece harnesses) or 5.4.3 To remove heater & NTC base-mounted controls from base when necessary. 1. Loosen pump - heater hose clamp and remove two (2) T- 20 Torx screws holding heater assembly to sump. 2.

  • Page 34: 2-Piece Drain Hose Connection

    5.4.4 Softer bearing & non-softer bearing heaters Drain pump removal and installation Softer bearing & non-softer bearing heaters are connected to To access pump, disconnect inlet hose and pump harness. To circulation pumps differently: remove pump, (1) pull latch (on circular collar), (2) rotate pump clockwise (cw) ~ 1/8 turn and (3) pull out pump.
  • Page 35 3. Remove door latch from console. HINT: Make sure latch tabs are seated, all fascia frame (console) tabs bent 4. If door latch has a microswitch cover, disconnect wire completely, door strikes are aligned with harness and remove microswitch & cover. latches and door latches get reset.

  • Page 36: Fault Diagnostics

    FAULT DIAGNOSTICS 6.1.2 Error code displays Error codes can be found using the customer service test Customer service test program program. Most dishwashers will show the following error codes. For dishwashers without digital displays, the “LED’s” column will 6.1.1 Entering customer service test program show the light displays for each error code.
  • Page 37 6.1.4 Viewing customer service program Test programs differ from model to model. Consult the test program for your model. The one below is an example of a typical test program. Push button “B” to skip a step. DP = Drain pump MP = Main (circulation) pump Disp = Dispenser H = Heater...

  • Page 38: Troubleshooting

    Troubleshooting 6.2.1 Heater diagnosing Test programs heat the water to 150ºF at ~ 2ºF / minute. To Flow save time, don't run the entire test – when water circulates and switch the heater is on, measure the incoming current to the dishwasher. If the current is ~ 11A, the heater is OK.
  • Page 39 6.2.3 NTC resistance chart 6.2.4 Water Leaking Past Doors Water seldom leaks out of bottom of dishwasher doors. Usually it’s a customer or installation issue. Occasionally air pockets (from standing water in loops) or kinks in condensation tubes block condensation tubes and cause leaking. Pressure builds in tanks, blowing water past lower door seals (usually at start of cycles).
  • Page 40 6.2.5 Cosmetic / Customer Use / Installation Issues 6.2.6 Customer self-help diagnosing 1. Control codes during Cancel-Drain -- Customers have Dishwashers may occasionally exhibit problems unrelated to a pushed / held Cancel-Drain or Cancel-Reset buttons while dishwasher failure. The following fixes can be made by turning dw’s on and entered control coding selection or customers without calling for repair.
  • Page 41 rather than a serviceman for the dishwasher. If an air gap is installed at sink, it may be clogged. 8. Detergent dispenser cover will not shut – The cover may not have been shut correctly or a cycle was not finished and should’ve been cancelled.

  • Page 42: Technical Specifications

    TECHNICAL SPECIFICATIONS Dishwasher ratings – Dishwashers are rated 120VAC, 60 • Hz, 15A, 1450W (max.). Maximum amp draw when heaters running ~ 11A. Heater ratings – 120VAC, 1200W, flow-through, heats • water ~ 2ºF / minute. Noise level – Dependent on model, from 44 db – 56 dB. •...

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