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58300000202443_ARA_EN_C

JANUARY 2018

Service Manual for Bosch 800 Series Built-in Wall Ovens

Page 39 of 43

1901 Main St

▪

Suite 600

▪

Irvine, CA 92614

800 944-2904

This material is intended for the sole use of BSH authorized persons and may contain confidential and proprietary information. Any unauthorized review, use, copying, disclosure, or distribution in any format is prohibited.

7.3

Fault Trees

The

Fault Trees

on the following pages can be used to guide

troubleshooting efforts

Содержание Vision 800 Series

Страница 1: ...ectrical shock Bosch does not recommend that customers service their own units This material is intended for the sole use of BSH authorized persons and may contain confidential and proprietary information Any unauthorized review use copying disclosure or distribution in any format is prohibited HBL8752UCC is the traditional wall oven component of the HBL8752UC combination oven set which also inclu...

Страница 2: ...pair 16 6 1 Doors 16 6 1 1 Removing and Reinstalling the Door 16 6 1 2 Replacing Hinges 17 6 1 3 Replacing the 2 Pane Glass Pack 18 6 2 Door Latch Motor Assembly 19 6 2 1 Replacing the Latch Motor Assembly 20 6 3 Oven High Temperature Cutout HTC 20 6 3 1 Resetting and Replacing the HTC 21 6 4 Control Panel 22 6 4 1 Replacing the Front Panel Assembly 22 6 4 2 Replacing the Display Module 23 6 5 Cav...

Страница 3: ...tain confidential and proprietary information Any unauthorized review use copying disclosure or distribution in any format is prohibited 1 SYMBOLS USED IN THIS MANUAL WARNING this symbol alerts you to dangers that may result in bodily injury or death CAUTION this symbol alerts you to actions that may result in damage to the product or property NOTICE this symbol alerts you to important information...

Страница 4: ...set for home appliances will void the warranty and may create safety hazards resulting in damage bodily injury or death WARNING Electrical hazards Before servicing the appliance remove electrical power by either disconnecting the power cord from the wall receptacle or by putting the circuit breaker in the OFF position If tests must be conducted while the appliance is live always use a residual cur...

Страница 5: ...eaning or polishing solutions compounds disinfectants or bleaches to remain in contact with the stainless steel surfaces for long periods or after clean up These may contain chemicals or materials which could release harmful inhalants and may cause damage to the appliance After cleaning or polishing always rinse the cleaning polishing materials with clear water and wipe dry with a clean soft non a...

Страница 6: ...ly populated with relays to operate the lower oven Ventilation air flows up through each door then back out over each door as air exits the appliance some air is pulled into the unit at the lower vent area under the appliance Lighting Soft lighting is standard on all models Double oven lighting is not independent lights operate concurrently Temperature control now a two point control for all modes...

Страница 7: ...ponents HBL8752UCC wall oven and HMC80252UC microwave speed oven There is no service documentation linked to HBL8752UC but a cross reference will appear in QuickFinder when HBL8752UC is entered 3 3 Rating Label The rating label reflecting model number and FD number is located on the side trim as shown in Figure 4 The first 4 positions of the FD number reflect the year month the product was built F...

Страница 8: ...ay contain confidential and proprietary information Any unauthorized review use copying disclosure or distribution in any format is prohibited 3 4 Warranty The product is warranted to be free from defects in materials and workmanship for a period of 365 days from date of purchase Bosch will have no responsibility or liability for repairs or work performed by a non authorized servicer Find the comp...

Страница 9: ...HBL8451UC HBL8461UC HBN8451UC HBL8642UC u HBL8651UC u HBL8661UC u HBN8651UC HBL8742UCC HBL8752UCC HBL87M52UCC 85 F 125 F 100 F Convection Bake HBL8442UC HBL8451UC HBL8461UC HBN8451UC 100 F 550 F 325 F Convection Broil 450 F 550 F High Convection Roast 100 F 550 F 325 F Pizza 100 F 550 F 400 F Cooking Mode Models Min Max Default Multi Rack Convection Eur Conv HBL8642UC u HBL8651UC u HBL8661UC u HBN...

Страница 10: ...gh Bake Lower element is used to maintain a low temperature Self clean Broil Bake Upper and lower elements cycle to maintain oven temperature more intense heat from the upper element is used than the lower Convection Bake Broil Bake Conv Fan Upper and lower elements cycle to maintain oven temperature and the heat is circulated by the convection fan Convection Broil Broil Conv Fan Intense heat is r...

Страница 11: ...gs to access the Customer Settings menu from stand by mode only 2 Press 9 for Temperature Offset single upper or 10 lower 3 Press Enter to edit the current setting 4 Press or then enter the offset value using the numeric keys always enter the value as 2 digits i e 05 The new value is saved when the display changes from edit mode back to display mode 5 Press Oven Clear Off to exit the Settings menu...

Страница 12: ... and customer accessible surfaces During Preheat the fan speed will increase based on cavity temperature until the final speed is reached at the conclusion of Preheat Throughout the Regulate phase of the cooking cycle the fan speed will remain constant During Self clean the cooling fan will run at high speed immediately after the self clean cycle begins regardless of temperature The fan will remai...

Страница 13: ...om the back wall and the side housing panel s and trim removed the following components are serviceable Hinge receivers Meat probe receptacle 5 3 Serviceable from the Rear With the unit pulled completely out of the cutout and the back housing panel s removed the following components can be serviced from the rear Convection fan motor Convection ring element Broil element Bake element Cooling fan Ca...

Страница 14: ... panel on an HBL8742UCC HBL8752UCC or HBL87M52UCC oven follow the steps below 1 Remove the screws securing the right and left side trim pieces to the cabinetry 2 Carefully slide the combination oven out of the cutout 8 9 inches 3 Remove the locking screw from the right and left service slides see Figure 6 4 Carefully slide the microwave or steam oven to the rear 7 inches the service access panel w...

Страница 15: ...ieces to the cabinetry 3 Carefully slide the combination unit completely out of the cabinet cutout 4 Proceed to step 6 if servicing a Speed microwave oven 5 Unplug the power cord from the receptacle if servicing a Solo microwave then proceed to step 7 6 Disconnect the feeder wires from the terminal block see Figure 7 only necessary if a work table is not nearby and the 5 length of conduit wire wil...

Страница 16: ...ompletely 2 Flip right and left hinge levers back to open as shown below be sure the levers are in the fully open position The RH and LH hinges differ slightly but operate in the same manner CAUTION Avoid injury when removing and replacing oven doors Be sure oven is cool enough for handling Position hinges properly see Figure 11 Grasp only by sides not by the handle Do not force door open or close...

Страница 17: ...e right and left hinge levers forward until they are fully closed 5 Open and close the door carefully to confirm that the door is installed correctly and securely and does not appear to be askew when closed 6 Carefully close and open door to check operation 6 1 2 Replacing Hinges The doors on Bosch 800 series ovens are soft close and operate using one dampen hinge and one spring hinge The hinges a...

Страница 18: ...inner support frame assembly and set aside 8 Remove the screws on the upper right and lower left which secure the hinges to the inner support frame 9 Lift the inner support frame upwards to access the hinges 10 Install new right and left hinges and reassemble the door 11 Test operation of the door by fully opening and closing it several times 6 1 3 Replacing the 2 Pane Glass Pack To access the gla...

Страница 19: ...ation of the door by fully opening and closing it several times 6 2 Door Latch Motor Assembly The motorized door latch MDL mechanism 120VAC 60Hz 4 3W has 2 switches the door switch and the lock unlock switch The latch will automatically lock when mode and temperature selectors are set to Self Clean and unlock when the oven cools to 490 F The latch and motor are serviced as an assembly If the latch...

Страница 20: ... from the small support bracket that sits directly behind it then pull the latch forward 4 Disconnect the wires 5 Install the new latch motor assembly reconnecting the wires and engaging the latch correctly with the latch support bracket 6 Position the latch plate with the curved corners at the bottom and reinsert screws 7 Restore power and test operation 6 3 Oven High Temperature Cutout HTC The r...

Страница 21: ...ng the HTC to its mounting bracket If it is not possible to complete step 3 from the front continue with step 4 If the screws were successfully removed skip to step 9 4 Remove the screws securing the right and left side trim pieces to the cabinetry and set screws aside 5 Carefully slide the oven out of the cutout to gain access to the front and rear top housing covers 6 Remove the top housing cove...

Страница 22: ...odule After start up the control module polls the TCM every 100ms to determine which if any keys are activated The response to each key press is controlled by the control module A Front Panel Test is available in Service mode See the Service Mode section for details 6 4 1 Replacing the Front Panel Assembly 1 Remove power to the oven 2 Protect the top of the oven door to prevent damage to the stain...

Страница 23: ... Using pliers gently straighten each metal tab so that they align with the slots in the display board then lift the board off the tabs 3 Position the new display board so that the slots in the board align with the four metal tabs and firmly push the board downward until it is securely in place 4 Slightly re twist each of the four metal tabs 5 Reassemble the control panel 6 Reattach the control pan...

Страница 24: ... needed Replacing the convection fan motor will also require access to the rear of the unit A Ring Element Ring Relay Test and a Convection Fan Relay Test are available in Service mode See the Service Mode section for additional information Refer to the Element Strip Diagram section to test the ring element at the control module If the wires are disconnected from the element terminals an ohmmeter ...

Страница 25: ...e new element and reinstall the baffle 9 Restore power and test operation 10 If necessary slide the oven back into the cutout and reinstall trim 6 6 3 Replacing the Convection Fan Motor 1 Follow steps 1 3 in the Replacing the Convection Fan Blade section 2 Remove the washer located behind the blade and set aside 3 Remove the screws securing the right and left side trim pieces to the cabinetry 4 Ca...

Страница 26: ...Carefully slide the oven out of the cutout to gain access to the element terminals from the rear of the unit 7 Disconnect the wire leads from the terminals 8 Install the new element 9 Restore power and test operation 10 If necessary slide the oven back into the cutout and reinstall trim 6 8 Bake Element The 240V 2400W bake element is concealed in the base of the oven Access to the rear of the unit...

Страница 27: ...le for communication with other modules analyzing sensor data regulating line voltage and managing user interface activities The control module and daughter board are accessible from the top of the unit Proceed to the Replacing the Control Module or Daughter Board section if an HBL8742UCC HBL8752UCC or HBL87M52UCC is not being serviced If an HBL8742UCC HBL8752UCC or HBL87M52UCC combination oven co...

Страница 28: ...lace the top front housing cover and the Service Guide 11 Slide the unit back into the cutout and reinstall the side trim pieces Whenever possible conduct troubleshooting tests at the control module using the Service Guide as a reference 6 11 Cooling Fan The cooling fan is offered as a service assembly with noise reducing foam tape attached Each cavity uses a 120VAC 50W max variable speed fan with...

Страница 29: ...he fan 9 Install the new cooling fan and reattach the wires securely 10 Restore power to the unit and test operation 11 Reinstall housing cover s 12 Slide the unit back into the cutout and reinstall the side trim pieces 6 12 Hinge Receivers To replace the hinge receivers the oven must be pulled completely out of the cutout to provide access to the side panel s 6 12 1 Replacing the Hinge Receivers ...

Страница 30: ...for the sole use of BSH authorized persons and may contain confidential and proprietary information Any unauthorized review use copying disclosure or distribution in any format is prohibited 8 Install the new hinge receiver 9 Reinstall the oven door and test door operation 10 Reinstall the side housing cover 11 Restore power to the unit and test operation 12 Slide the oven back into the cutout and...

Страница 31: ...hen troubleshooting diagnosing and resolving faults and other issues affecting the normal operation of the oven 7 1 Error Codes A Service Guide Wire Diagram that includes error code information is available in QuickFinder and is also packed with every oven Find it on the underside of the upper plenum access panel as shown in Figure 39 Additional error code information and suggested repair actions ...

Страница 32: ...ted as E000 Control module and user interface are mismatched No operation is possible Enter correct option code in Service mode E302 Control module too hot Temperature sensor on the control module detects temperature higher than limit value Control turns off heating elements and fan defaults to high speed When cavity temperature lowers to 212 F 100 C heating will resume and error will be cleared I...

Страница 33: ...eplace user interface E310 Replace control module E011 Continuous pushing of a single key E411 internal error reported as E011 Key pressed continually for 10 seconds or touchpad assembly has a bad key Heating will be stopped and will resume when key is no longer pressed Confirm touch panel is clean and free of moisture oils or other contaminants Inspect user interface PCB Check door seal to verify...

Страница 34: ...rate at high speed and heating will stop After two consecutive temperature readings are made successfully heating will resume and error will be cleared See Communication Schematic Check all connections and wires to temperature sensor Check resistance of temperature sensor if sensor tests OK could be control module problem if sensor fails replace sensor E104 E204 Cavity 1 Cavity 2 temperature senso...

Страница 35: ...cleared and oven will resume heating Check element operation Check temperature sensor resistance replace sensor if necessary Check for stuck relays Replace control module if necessary E116 E216 Cavity 1 Cavity 2 meat probe error Hot wire shorted to ground Connection to the probe changes from connected to disconnected multiple times Probe is disabled but oven continues to operate Error will be clea...

Страница 36: ... the control module detects temperature changes that over time are higher than limit value Control turns off heating elements and fan defaults to high speed When cavity temperature reaches 212 F 100 C heating will resume and error will be cleared If self clean was running it will be disabled until a control reset is performed Check connections to cooling fan and to control module see Small Load Sc...

Страница 37: ... 3145 HBL8642UC HBL8651UC HBL8661UC 3155 1 Follow the steps in the Accessing Service Mode section 2 Advance through the menu until Option Code is visible current option code 3 Press 1 to edit option code will blink when editable 4 Use the numeric keypad to enter the new option code 5 Press Enter when the correct option code is displayed 6 Press Oven Clear Off on single ovens or Upper Clear Off on ...

Страница 38: ...llow the steps in the Accessing Service Mode section 2 Advance through the menu until Relay Tests appears in the display 3 Press 1 to begin testing 4 Press Enter to navigate through the relay options The initial displayed state will reflect the current state of the relay 5 Press 1 or 2 to change the state of the relay 6 After navigating through all relay tests press Enter then Enter again to advan...

Страница 39: ...in St Suite 600 Irvine CA 92614 800 944 2904 This material is intended for the sole use of BSH authorized persons and may contain confidential and proprietary information Any unauthorized review use copying disclosure or distribution in any format is prohibited 7 3 Fault Trees The Fault Trees on the following pages can be used to guide troubleshooting efforts ...

Страница 40: ...pyright by BSH Home Appliances Corporation 1901 Main St Suite 600 Irvine CA 92614 800 944 2904 This material is intended for the sole use of BSH authorized persons and may contain confidential and proprietary information Any unauthorized review use copying disclosure or distribution in any format is prohibited ...

Страница 41: ...pyright by BSH Home Appliances Corporation 1901 Main St Suite 600 Irvine CA 92614 800 944 2904 This material is intended for the sole use of BSH authorized persons and may contain confidential and proprietary information Any unauthorized review use copying disclosure or distribution in any format is prohibited ...

Страница 42: ...ted 7 4 Wiring Diagrams and Schematics The wire color key Table 11 and element strip diagrams are shown below For schematics please refer to the Built in Oven Service Guide which can be found on QuickFinder or attached to the control module access cover in the upper oven plenum 7 4 1 Wire Color Key BK Black BN Brown BU Blue GN Green GR Gray OR Orange RD Red VT Violet WH White YE Yellow BN WH Brown...

Страница 43: ...rowave Installation Instructions HMC80252UC Service Manual HMC80252UC Wiring Diagram HMC80252UC Microwave Installation Instructions HMC80252UC Microwave Use and Care Manual HMC80242UC Service Manual HMC80242UC Wiring Diagram HMC80242UC Microwave Installation Instructions HMC80242UC Microwave Use and Care Manual Exploded views parts lists and related service and parts notes are also available on Qu...

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