Bosch Ascenta SHX3AM Repair Instruction
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Also See for Ascenta SHX3AM:
- Use and care manual (192 pages) ,
- Use and care manual (21 pages) ,
- Use and care manual (64 pages)
Table of Contents
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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 ...................................................3
2.4
Water connection .........................................................4
2.5
Drain and condensation hose connections...............4
3
OPERATION ........................................... 5
3.1
Control layout...............................................................5
3.2
Using controls..............................................................5
3.3
3.4
Changing basic settings..............................................5
3.5
Special programs (codings)........................................7
3.6
Sales demo (showroom) program ..............................8
4
COMPONENTS....................................... 9
4.1
Tank with base and sump ...........................................9
4.2
Heated circulation pump (heat pump)........................9
4.3
Float ............................................................................10
4.4
Drain pump .................................................................10
4.5
Water inlet / condensation system ...........................10
4.6
Door spring.................................................................11
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4.11
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4.15
4.16
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5.2
5.3
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5.7
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Water inlet valve.........................................................11
Door latch ...................................................................12
Terminal block............................................................12
Drain hose ..................................................................12
Dispenser....................................................................12
Aqua sensor ...............................................................13
Display and power modules......................................13
Hose system...............................................................13
Backflow valve ...........................................................14
Sump parts .................................................................14
REPAIR................................................. 15
Front & bottom access ..............................................15
Left side access .........................................................15
Right side access (power module) ...........................15
Fascia panel disassembly .........................................16
Heat pump disassembly ............................................17
Float (safety system) .................................................17
2-piece drain hose connection .................................18
FAULT DIAGNOSTICS......................... 19
Fault codes (service / customer) ..............................19
Customer service test program ................................23
Troubleshooting.........................................................26
TECHNICAL SPECIFICATIONS .......... 27
Page 1 of 27
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Table of Contents
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Summary of Contents for Bosch Ascenta SHX3AM
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Page 1: Table Of Contents
Water inlet valve............11 SAFETY ..........2 Door latch ..............12 General hazards ............2 Terminal block............12 Electrical shock / fire hazards........2 4.10 Drain hose ..............12 Plumbing / scalding hazards........2 4.11 Dispenser..............12 INSTALLATION ........3 4.12 Aqua sensor ...............13 4.13 Display and power modules........13 Pre-Install checklist .............3 4.14 Hose system...............13... -
Page 2: Safety
The customer has the responsibility of ensuring that the SAFETY 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. □ Flush household hot water supply for at least two minutes. Electrical connection □... -
Page 4: Water Connection
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 5: Operation
OPERATION Using controls Wash programs don’t have dedicated buttons, but are selected Control layout by scrolling with left (“<”) and right (“>”) scroll buttons. After turning on dishwashers, scroll left or right to the desired wash 3.1.1 SHE models program (shown by lit program lights between scroll buttons). To start the desired program, press the Start button. - Page 6 Press “>” button to scroll between Extra Dry and Rinse Aid SHE5AM modes. Press “<” button to scroll to desired setting. Press Start digital display SHE5AM basic settings button to save settings and exit basic settings. d:00 Extra Dry (off) d:01 Extra Dry (on) SHE4AM...
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Page 7: Special Programs (Codings)
SHX3AM SHE4AM/5AM SHE5AM program lights program lights digital display SHE4AM/5AM special programs Fault codes* / Functional test+ Power SHX3AM basic settings Scrub Regular Quick Customer service test* Extra Dry (off) High voltage test* Extra Dry (on) Endurance run+ Rinse Aid (none) UL program* Rinse Aid (low) Showroom (sales demo)*... -
Page 8: Sales Demo (Showroom) Program
SHE5AM models, digital display will always show “1:23”). • To scroll through programs, press “<” button. Pressing buttons will light corresponding light. • Exiting sales demo program - Press and hold “>”and Delay • To start programs shown with “*”, press “>” button. buttons, then turn dishwasher off to exit program. -
Page 9: Components
COMPONENTS Center rear Tank with base and sump adjusting foot 4.1.1 Tank, base and sump assembly Right rear adjusting foot Center rear foot set screw hole The tank, base and sump are welded together and aren’t available as a service part. If plastic cable holders, part holders and screw holes are damaged or stripped, the entire dishwasher Heated circulation pump (heat pump) must be replaced. -
Page 10: Float
Drain pump Pump access Sump The BLDC 9-vane drain pump has variable speed and direction. Pump Pump The power control module controls speed and direction, detects end of draining and blocked rotor and corrects locked rotor conditions. The dishwasher won’t run if the drain pump is disconnected or disabled. -
Page 11: Door Spring
Maximum customer (external) drain hose length is 92”. Water inlet system and hoses are shown below. Condensation tube Water inlet Inlet hose The spring has loops at both ends and connects to a long slot in the base. Springs are color coded for specific tensions. Drain hose Water inlet valve Drain hose high loop and left side condensation exit are shown... -
Page 12: Door Latch
Door latch 4.10 Drain hose The door latch is mounted on top of the tank and doesn’t contain Ascenta dishwashers use a two-hose (internal / external) drain a microswitch. It uses a Hall-effect sensor in the door to sense hose system. A customer (external) drain hose (during when the door is open or closed. -
Page 13: Aqua Sensor
4.12 Aqua sensor Power module The aqua sensor is located above the drain pump. It’s a one- piece assembly (i.e. not a small circuit board pulled out of a plastic housing). It senses water cleanliness and allows the dishwasher control to determine removing cycles to save energy. Aqua sensor Drain pump... -
Page 14: Backflow Valve
The condensation tube attaches to the base – don’t connect it to 4.16 Sump parts a drain. The sump contains a filter screen, coarse filter and micro filter. Micro filter Coarse Coarse filter filter Filter screen Condensation Filter screen tube exit Micro filter Backflow valve The sump holds the drain pump cover and suction cap. -
Page 15: Repair
REPAIR Right side access (power module) The power module is accessible from the right side. Front & bottom access J-box Drain pump Sump Water valve Power module Power module Viewing from bottom, inside Two plastic base tabs hold the power module in place. Float remove power module, gently bend tabs until they clear module, move bottom of module (in toward heat pump) until it clears base... -
Page 16: Fascia Panel Disassembly
Not all terminals are used. To protect power modules, two plugs are used to cover unused terminals. Connector Connector On/off switch Display On/off switch Display harness harness Plugs Remove handle trays (SHE models) before removing display modules. To remove both, carefully pry in plastic clips. Fascia panel disassembly Prying handle Remove six (6) long fascia panel screws from top of inner door,... -
Page 17: Heat Pump Disassembly
Float (safety system) The float is best accessed from the bottom. Several plastic pieces snap into place and must be carefully removed in sequence. Unscrew the one housing screw, then squeeze cover tabs to lift up cover from float assembly. Cover can be snapped from hinge on float assembly. -
Page 18: 2-Piece Drain Hose Connection
o remove the internal drain hose, two white plastic hose locks must be removed. At the outlet where t he external drain hose connects to it. Drain hose lock Lift up float housing with microswitch from base. t the inlet where it connects to th sump. Drain hose lock 2-piece drain hose connection Drain hoses come in two pieces, an external (customer) drain... -
Page 19: Fault Diagnostics
FAULT DIAGNOSTICS Fault codes (service / customer) 6.1.1 Entering fault code program 6.1.1.1 SHE4AM/5AM “Evolution” models Press and hold “>” and Delay buttons, then turn dishwasher on. Left program light will flash and 2 program light from left will be lit. - Page 20 6.1.3 Digital and LED fault code displays 6.1.4 Fault code troubleshooting Digital error codes only show on SHE5AM dishwashers with 6.1.4.1 No failures digital displays. SHE4AM / SHX3AM dishwashers show the same LED display for many error codes, so it’s not possible to SHE4AM / SHX3AM determine which specific error code occurred.
- Page 21 6.1.4.4 Heating (heat pump) Power module SHE4AM / SHX3AM SHE5AM digital display LED display E:08 No load in heat pump No water in heat pump Check water supply E:09 Burn through / safety relay error Power module controlling relay not switching / stuck closed Replace power module Same LED display...
- Page 22 6.1.4.6 Circulating (heat pump) Digital error codes E:08 – E:13 are shown with one display: They have different causes, such as faulty SHE4AM / SHX3AM heat pump, faulty power SHE5AM digital display LED display module or insufficient water E:20 Heater error supply.
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Page 23: Customer Service Test Program
6.1.4.7 Drain pump 6.1.4.9 Aqua sensor SHE4AM / SHX3AM SHE4AM / SHX3AM LED display SHE5AM digital display SHE5AM digital display LED display E:28 Calibration failure E:23 Coil error Aqua sensor failed to calibrate System check of drain pump motor coil failed, functional safety error. Replace drain pump Same LED display 6.1.5... - Page 24 show “P1”). Press “> ” button to start program. Turn dishwasher off to exit program. SHE4AM/5AM SHE5AM program lights digital display SHE4AM/5AM special programs Fault codes* / Functional test+ Customer service test* Running customer service test program clears fault codes. 6.2.1.2 SHX3AM “Integra”...
- Page 25 6.2.2 Viewing customer service program Customer Service Program Displayed Can advance Water Step step Action step Time Temperature amount Remarks Check Coil Checks pumps and other components (when switched on) Drain Pump Drain pump O K Filling partly 3.0 L Checks if water level above filter level Pause Checks water level...
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Page 26: Troubleshooting
6.3.3 Drain pump Troubleshooting There is a single 3-pin connector, connecting to the 3-pole BLDC 6.3.1 Protection of heater if there’s no water pump motor. Two NTC’s protect the heater. Both NTC’s are checked by the Resistances as follows: control – if they overheat, the control shuts down the dishwasher 1 –... -
Page 27: Technical Specifications
TECHNICAL SPECIFICATIONS Dishwasher ratings – 120 VAC, 60 Hz, 12 A, 1450 W Heater ratings – 120 VAC, 1200 W Circulation pump – 120 VAC, 80 W, 3-pole BLDC, class F insulation Drain pump – 3-pole BLDC, 35-65 Hz, 0.19A, 20W, class F insulation Max drain hose length –...