Fisher & Paykel DD607, DD247 service manual Technical Overview, Tub Home Sensor

Page 14
3 TECHNICAL OVERVIEW

14

3 TECHNICAL OVERVIEW

3.1 Chassis

The DishDrawer™ chassis is one complete assembly composed of 5 steel metal components locked together by a proprietary riveting process. The chassis exterior is made of a lacquered electro-galvanised material.

3.2 Drawer Fronts

Prefinished drawer fronts are formed from steel blanks. The drawer fronts are attached to the tub by means of formed hooks and two pins that are inserted through either side of the tub.

On the integrated model, the front panel supplied on each drawer is the mounting panel for the joinery finished drawer front. The joinery finished drawer front is supplied by the customer.

3.3 Electronics

In the electronic controller, the functions of controlling the motor as well as controlling the user interface console are combined into a single micro controller on the main printed circuit board.

This micro controller also controls a transformerless 85w switch mode power supply. This power supply utilises a large dropping resistor on the heater plate in conjunction with phase control of the mains voltage in order to produce a variable voltage supply for the motors, solenoids and drying fan. From this the controller can supply voltages from 16V to 85V to the various components in the DishDrawer™.

A separate 24volt dc power supply on the PCB mains filter board, (located within the mains filter housing in the lower left corner of the chassis) supplies power to the electronic controller(s). A switch mode power

supply on the electronic controller converts this to 5V which powers the microcontroller and LED’s.

An isolation relay is mounted on the PCB mains filter and will disconnect power to major components when signalled to by the controller under certain fault conditions. Once the fault has been cleared, it will require the power to be disconnected from the product for the isolation relay to reset.

NOTE: - With power supplies of this nature, all components, regardless of supply voltage, should be treated as live to earth. i.e. at supply voltage.

The user interface comprises a printed circuit board for front controls and a touch switch panel for internal controls.

The element is switched by one single pole relay. Overheat protection is provided by a thermal fuse in series with the water heater track on the heater plate. In an over-heat situation, this gravity fuse drops off and disconnects the water heater element from the supply voltage.

A non-serviceable fuse is mounted within the controller to provide additional safety protection.

3.3.1 Tub Home Sensor

The tub home sensor determines when the tub is closed. The tub home sensor consists of an infrared transmitter and receiver mounted on the right side of electronic controller. When the tub is fully closed, infrared light is transmitted from the sender through a light pipe on the side of the tub, through a prism mounted in the chassis trim, then back through the other light pipe to the receiver. If the tub is not fully closed, the circuit is not complete and the appliance will not operate.

Page 13 Page 15
Image 14
Page 13 Page 15
Contents NZ AU GB IE US CA Service ManualDishDrawer DD607 & DD247Standard Double Models FEATURED PRODUCT & CONTACT ADDRESSESBrand DescriptionSingle, Designer, Brushed Stainless Standard Single ModelsDD24SCW7 Tall Tub Double ModelsSingle, Tall Tub, Classic White Tall Tub Single ModelsDD24SDFTX7 Single, Tall Tub, Classic, Stainless SteelCONTENTS 10 NOTES WIRING DIAGRAMSSERVICE PROCEDURES 1.1.9 Diagnostics 1 SERVICE REQUIREMENTS1.1.1 Electrical Safety 1.1.2 Electrostatic Discharge1.2 Specialised Tools 1.2.1 Static Strap22 15/16” 2 DIMENSIONS & SPECIFICATIONS22 15/16 ” 8.0 Ohms per winding, 16 ohms phase to Component SpecificationsSpecification ComponentHall sensor Post Wash CycleWash TimeWash Cycle DD60 Australia/New Zealand Wash ProfilesDD60 United States/Canada Wash Profiles Wash3 TECHNICAL OVERVIEW 3.3.1 Tub Home Sensor3.3.4 Operation some integrated models only 3.3.2 Touch Switches3.3.3 Wireless Remote some integrated models only Sluicing Jets 3.3.5 Wireless ReceiverAir Valve 3.4.1 Rotor3.4.3 Filter Plate 3.4.4 Drain Filter3.7.1 Water Inlet 3.5.1 When Activated3.5.2 During a Power Failure Flood Sensor 3.7.2 Dispensing Detergent and Rinse Aid3.7.3 Amount of Water 3.7.4 Flood Protection3.8.3 Maintaining the Temperature 3.8.1 The Heating Element3.8.2 Heating the Water 3.8.4 Over Heat ProtectionNon Return Valve 3.11.2 Removing and Cleaning the Drain Filter and Filter Plate 3.11.1 The Filter System3.12.1 Integrated Single Drawer Venting some models only Strainer Spigot Strainer 4.1.2 Rinse Aid Setup rA 4 OPTION ADJUSTMENT MODENot Wireless Model SetupGrains per Gallon DishDrawer Setting4.1.3 Water Supply Hardness Setup hd Parts per Million4.2.1 Classic Models 4.2.2 Designer Modelsbutton, which will increase or decrease the amount of LED’s on the 4.2.4 Integrated with Wireless Remote Control4.2.3 Integrated Models Rinse aid Closed Drawer autolock using the remote controlOption Water softener5.1.2 Hardware Output Mode HO 5 DIAGNOSTICS5.1.1 Display Mode Rinse Aid Pump operates as a valve for diagnostic purposes only 5.1.3 Fast Cycle FC 5.1.4 Continuous Cycle Mode CCPlaying Tunes 5.1.5 Temperature and Voltage Display5.1.6 Show Off/ Showroom Wash Mode Program Button 5.2.1 Diagnostic ModeProgram Indicators 5.2.2 Display Mode5.2.4 Fast Cycle Mode FC 5.2.5 Continous Cycle Mode CC6 FAULT CODES AND POOR PERFORMANCE LED Display Fault CodeFault Possible Causes6.1.1 Sub Code Faults Fast, Delicate Fast & Eco LED’sIs the customer complaining of Poor Dry Performance Non VentedQUESTION plastic items not drying?Customers Complaint - food particles left on dishes How to resolve theproblem Customers Complaint - coffee/tea stains left in cupswhite chalky film on them More on next pageHow to resolve the problem 7 FAULT FINDING PROCEDURE 7.1 Fault Code Problem SolvingDry E1 - No Water in the Chassis Base DO NOT REPLACE COMPONENTS ON A TUB WITH THIS WARNINGWet E1- Water in the Chassis Base Prefinished models Fault code E2 - Sub Code 03 - Motor Not Drawing Enough Current Controller Harness P201 Corrosion Damage ExampleNOTE For more detailed component testing, refer to page Fault Code E5 - Sub Code 02 - No Current Fault Code E5 - Lid FaultFault Code E5 - Sub Code 01 - Not Starting Fault Code E5 - Sub Code 04 - Not StallingFan Housing Locking Tabs FlapFault Code E7 - Sub Code 03 - Over Current Fault Code E7 - Detergent Diverter ValveFault Code E7 - Sub Code 02 - Under Current Detergent Diverter Coil Harness Pin PinWater softener brine pump There are 4 sub codes which relate to this fault code If the problem persists replace the bottom controller  8 WIRING DIAGRAMS8.2 Power Distribution Concept  8.3 Wiring DiagramLower Tub Shown Only  P203 9 SERVICE PROCEDURESP204 P2021. Open the drawer Rail Clip Retaining ScrewClip Cowling 1. Open the drawer and remove the drawer front refer section 1. Remove the drawer front refert section 1. Remove the cutlery basket and rack from the tub 1. Remove the drawer front refer Section Drain Hose Fill Hose Earth Wire Element CoverClips Clips 1. Remove the wiring cover refer section 1. Remove the tub as per section Trim Trim ChannelClips Inlet Hose Flood Sensor MFB Hex Drive Screws Rail Rear Locating TabsWater Valve Wiring Harness Link Clip 15mm 3/4” Fill Hoses Water Inlet Hose Chassis ClipT10 Torx Screw 9.28 Single Integrated Vent Duct Removal Some models onlyTrim Clips Slide Off Tub1. Remove the tub to gain access to the duct, refer section 1. Remove the door panel, refer section To Pair Remote to Receiver Pairing ProcedureReceiver Replacement Procedure Transmit LED indicator Top Tub start button on doubles 10 NOTES NZ AU GB IE US CA F&P PN 590409 A 11.2011
Top Page Image Contents