Hotpoint MWH424.1X Service Information

Built in combination microwave ovens electronic with touch & variable control

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Instruction manual (28 pages)

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Summary of Contents for Hotpoint MWH424.1X

Page 1 TOUCH & VARIABLE CONTROL Changes in this Issue • New Service Manual • New Models Models Comm. Covered Code Service MWH424.1X 82011 MWH424.1Q 84362 Information Indesit Company UK Ltd © 2014 Reg. Office: Peterborough PE2 9JB Registered in London: 106725...
Page 2: Table Of Contents
Indesit Company SAFETY NOTES & GENERAL SERVICING ADVICE 1. This manual is NOT intended as a comprehensive repair/maintenance guide to the appliance. 2. It should ONLY be used by suitably qualified persons having technical competence applicable product knowledge and suitable tools and test equipment. 3.
Page 3: Introduction
Indesit Company INTRODUCTION OF THE HOTPOINT MODEL MWH424.1 This model was introduced into the Hotpoint range in July 2013. SPECIFICATIONS Model MWH424.1 Touch Control / Variable Knob Microwave with Grill Colours MWH424.1X Mirrored MWH424.1Q Black General Fully electronic clock, timer and temperature control 5 functions: Microwave, Grill, Fan Oven, Microwave &...
Page 4: Safety Information
Indesit Company SAFETY INFORMATION • WARNING: If the door seal is damaged, the oven must not be operated until it has been repaired by a competent person trained on the appliance. • WARNING: It is hazardous for anyone other than a competent person to carry out any service repair operation which involves the removal of a cover which gives protection against exposure to microwave energy.
Page 5: General Rules For Microwave Cooking
Indesit Company GENERAL RULES FOR MICROWAVE COOKING Microwaves consist of electromagnetic radiation found in nature in the form of light waves (e.g. sunlight). Inside the oven, these waves penetrate food from all directions and heat up the water, fatty and sugar molecules. Their frequency is in the 2450 MHz range. The penetration depth of the wave is approximately 2.5 cm;...
Page 6: Electrical Connection, Disposal
Indesit Company ELECTRICAL CONNECTION The following pages are taken from the User Instruction Book. DANGER Electric Shock Hazard.Touching some of the internal components can cause serious personal injury or death. Do not disassemble this appliance. WARNING The electrical connections must be made before installing the appliance in its housing. Electrical safety must be guaranteed by correct installation in the housing.
Page 7 Indesit Company DISPOSAL When disposing of packaging material: observe local legislation so that the packaging may be reused. The European Directive 2012/19/EEC on Waste Electrical and Electronic Equipment (WEEE), requires that old household electrical appliances must not be disposed of in the normal unsorted municipal waste stream.
Page 8: Installation
Indesit Company INSTALLATION Read these instructions carefully before using your microwave oven, and keep it carefully. If you follow the instructions, your oven will provide you with many years of good service. ! SAVE THESE INSTRUCTIONS CAREFULLY PRECAUTIONS TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY.
Page 9 Indesit Company BUILDING IN Do not hold or carry the appliance by the door handle. The door handle cannot hold the weight of the appliance and may break off. 1. Carefully push the microwave into the box, making sure that it is in the centre. 2.
Page 10 Indesit Company TURNTABLE INSTALLATION a) Never place the enamel tray upside down. The enamel tray Hub (underside) should never be restricted. b) The enamel tray must always be used during cooking. c) All food and containers of food are always placed on the enamel tray for cooking.
Page 11: Setting Up The Oven, Start-Up & Use
Indesit Company SETTING UP YOUR OVEN OVERALL VIEW Names of Oven Parts and Accessories Remove the oven and all materials from the carton and oven cavity. Your oven comes with the following accessories: Enamel Tray Turntable Ring Assembly Instruction Manual 1.
Page 12 Indesit Company START-UP & USE Operation Instruction This microwave oven uses modern electronic control to adjust cooking parameters to meet your needs better for cooking. 1. Clock Setting When the microwave oven is connected to the mains power supply, 00:00 will blink, buzzer will ring once.
Page 13 Indesit Company Microwave Power Chart Display 900W 700W 450W 300W 100W You can see from the table below from which power levels you can choose and for which foods the power levels are suitable. Power Level Food - Boiling water, reheating 900 W - Cooking chicken, fish, vegetables - Reheating...
Page 14 Indesit Company FUNCTIONS Function Mode Microwave Microwave Microwave Use the microwave function to cook and reheat vegetables, potatoes, rice, fish and meat. Hot air With hot air you can prepare meals in the same way as you Hot air do with a conventinal oven. The microwave is not activated. You are advised to pr eheat the oven befor e putting the meal in the oven.
Page 15 Indesit Company 3. Grill Cooking 1) Press the ON/OFF button to activate the microwave function. 2) Turn knob to set the cooking mode, indicator lights. The default grill power is the third level. indicator will light when grill function is selected. 3) Press to enter to the grill level.
Page 16 Indesit Company 7. Microwave + Grill Cooking 1) Press the ON/OFF button to activate the microwave function. 2) Turn to select the combination mode. will light. The default power is level 3. indicator will light when grill function is selected. 3) Press to enter to the temperature selection.
Page 17 Indesit Company 4) Turn to select the temperature between 100 to 230 degrees. 5) Press to select the power. The default power is 300W. 6) Turn to select 700W, 450W, 300W and 100W. 7) Press to select the time setting mode. The default time is 10 minutes. 8) Turn to select the cooking time.
Page 18 Indesit Company 12. Preheating Function The preheating function can be activated after you have chosen the functions: Convection, Grill Fan, Bottom-Convection, MW-Convection, MW-Grill Fan and Microwave-Bottom-Convection. 1) Press button. The preheat icon appears in the display. 2) Press button to start preheating. If the right temperature is reached, you will hear three beeps. You can stop the preheating by opening the oven door or by pressing the ON/OFF button.
Page 19: Important Safety Instructions
Indesit Company IMPORTANT SAFETY INSTRUCTIONS WARNING To reduce the risk of electric shock, injury to persons or exposure to excessive microwave oven energy when using your appliance, follow basic precautions, including the following: 1. Warning: Liquids and other foods must not be heated in sealed containers since they are liable to explode.
Page 20 Indesit Company 24. The appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety. 25.
Page 21: Utensils
Indesit Company UTENSILS There may be certain non-metallic utensils that are not safe to use for microwaving. If in doubt, you can test the utensil in question following the procedure below. Utensil Test: 1) Fill a microwave-safe container with 1 cup of cold water (250ml) along with the utensil in question. 2) Cook on maximum power for 1 minute.
Page 22: Maintenance & Care, Troubleshooting
Indesit Company MAINTENANCE & CARE Cleaning Be sure to disconnect the appliance from the power supply. 1) Clean the inside of the oven after using with a slightly damp cloth. 2) Clean the accessories in the usual way in soapy water. 3) The door frame and seal and neighbouring parts must be cleaned carefully with a damp cloth when they are dirty.
Page 23: Internal Parts
Indesit Company INTERNAL PARTS COOLING FAN MAINS TERMINAL BLOCK TRANSFORMER MAGNETRON DOOR SWITCH LAMP DOOR SWITCH OVEN CUTOUT PROBE OVEN FAN Service Manual UK English 23 of 45...
Page 24: Wiring Diagram
Indesit Company WIRING DIAGRAM Service Manual UK English 24 of 45...
Page 25: Safety Precautions
Indesit Company SAFETY PRECAUTIONS This device is to be serviced only by properly qualified service personnel. Consult the service manual for proper service procedures to assure continued safety operation and for precautions to be taken to avoid possible exposure to excessive microwave energy. PRECAUTIONS TO BE OBSERVED BEFORE AND DURING SERVICING TO AVOID POSSIBLE EXPOSURE TO EXCESSIVE MICROWAVE ENERGY A) Do not operate or allow the oven to be operated with the door open.
Page 26 Indesit Company MICROWAVE RADIATION Personnel should not be exposed to the microwave energy which may radiate from the magnetron or other microwave generating device if it is improperly used or connection. All input and output microwave connections, waveguide, flange and gasket must be secure never operate the device without a microwave energy absorbing load attached.
Page 27: Circuit Description
Indesit Company CIRCUIT DESCRIPTION As the door is closed, the contact of MONITOR SWITCH opens. This switch creates the short circuit to blow fuse during operation under abnormal condition (ie, should the contacts of primary and secondary switch fail to open the circuit). •...
Page 28: Common Breakdown & Means Of Repairing
Indesit Company COMMON BREAKDOWN AND MEANS OF REPAIRING PHENOMENON CAUSE REPAIRING MEANS 1. fuse broken 1. Change a new fuse. 2. The primary and secondary winding of the 2. Change transformer are short-circuited. transformer. 1.When starting 3. The earthing or the polarity of the capacitor is 3.
Page 29: Service Information
Indesit Company SERVICE INFORMATION MICROWAVE LEAKAGE TEST CAUTIONS • Be sure to check microwave leakage prior to servicing the oven if the oven is operative prior to servicing. • The service personnel should inform the manufacture importer, or assembler of any certified oven unit found to have a microwave emission level in excess of 5 mW/cm should repair any unit found to have excessive emission levels at no cost to the owner and should ascertain the cause of the excessive leakage.
Page 30 Indesit Company IMPORTANT THINGS TO DO PRIOR TO CRITICAL PART SERVICING The following instructions are CRITICAL to the owner’s safety. Be sure to follow all the instructions. Contact the manufacturer of distributor if you have any question. 1.1 If the oven is operative prior to servicing a Microwave Leakage Test (Microwave Emission Check) should be performed prior to servicing the oven.
Page 31: Fault Codes
Indesit Company SAFETY CHECKS AND TESTS AFTER SERVICING Constructional Checks If mechanical or electrical (electronic) parts have been replaced be sure to follow the following steps. 1.1 Check for correct wiring, adequate mechanical decrements of parts, and firm connectors. 1.2 Check for adequate grounding. 1.3 Check the following items before turning the oven ON.
Page 32: Door Switch Adjustment
Indesit Company DOOR SWITCH ADJUSTMENT When a door switch is removed or replaced, ensure it is adjusted as per the instructions below. Failure to do this can result in the turntable rotating continuously. Ensure the door latch depresses the red microswitch lever. Check both switch assemblies. If it does not make the lever, unscrew the assembly and move it forwards until it does.
Page 33: Dismantling Instructions
Indesit Company DISMANTLING INSTRUCTIONS Important Safety Notes Always isolate the microwave oven from the electricity supply before attempting any servicing procedure. Always discharge the high voltage capacitor when inspecting and repairing the high voltage side of the microwave. Never attempt to run the appliance with the cabinet removed or the door open. Refer to Safety Warnings on pages 2 and 4.
Page 34 Indesit Company Remove the five screws - three on the bottom of the internal frame and two on each external end of the frame. Fig. 5. Release the panel from the centre locating lug. See Fig 6. The console panel drops forwards to gain access to the circuit boards. Remove the two screws holding the console backplate to the console.
Page 35 Indesit Company Mains Cable, Noise Filter and Holder Release the microwave from its housing. Remove the top cover (B). Disconnect the L & N from the noise filter. Unbolt the Earth from the chassis. Unhook and lift the mains cable clear. Remove one screw securing the black holder and carefully release the retaining lugs.
Page 36 Indesit Company Base Fig. 20 Release the microwave from its housing. Remove the oven plate and coupler. Remove the door assembly (W). Remove the left and right side panels. Using suitable protection, carefully lay on its side. Remove the seven screws securing the front brown trim. Remove the five remaining screws securing the base and lift off.
Page 37 Indesit Company Capacitor Fig. 26 Release the microwave from its housing. Remove the cabinet top (A). Remove one screw and the securing strap. Disconnect the wiring. See Fig. 26. Waveguide Cover Fig. 27 Open the door. Remove the one securing screw in the roof. Lift clear.
Page 38 Indesit Company Magnetron Thermostat Fig. 32 Release the microwave from its housing. Remove the cabinet top (A). Disconnect the wiring. Release the two securing tabs and lift clear. See Fig. 32. O. Magnetron Release the microwave from its housing. Remove the cabinet top (A). Disconnect the wiring.
Page 39 Indesit Company Q. Oven Thermostat Cut Out and Air Guides Release the microwave from its housing. Remove the cabinet top (A). Remove the left hand side panel viewed from the front. Disconnect the wiring, remove one screw and bend the tab to the release thermostat. Remove the five screws to release the large air guide and two for the small air guide.
Page 40 Indesit Company Convector Assembly (Includes Fan Motor & Rear Heater) Release the microwave from its housing. Remove the cabinet top (A). Remove the cabinet back panel (B). Disconnect the wiring and remove the two 7mm nuts. Remove the ten screws and lift away. On re-fitting, ensure that the rubber seal is placed in the location holes.
Page 41 Indesit Company Turntable Motor Release the microwave from its housing. Remove the plate, keyway coupler and washer. Carefully place the microwave on it’s side. Remove the one screw and disengage the two lugs to lift the panel clear. Disconnect the wiring. See Figs. 48-50. Fig.
Page 42 Indesit Company Outer Door Glass Release the microwave from its housing. Remove the door assembly (W). Using a flat knife, gently ease the inner door panel from the inner door. There are plastic clips securing it to the panel. The seal will detach. Remove the six screws securing the inner panel to the outer door.
Page 43 Indesit Company Door Hinges, Door Handle & Door Latches Release the microwave from its housing. Remove the outer door glass (X). Invert the inner door and remove the three hinge securing the screws each side. Remove one door handle screw each side. Release the spring to remove tension.
Page 44: Other Items Supplied
Indesit Company OTHER ITEMS SUPPLIED Service Manual UK English 44 of 45...
Page 45 Indesit Company Service Manual UK English 45 of 45...

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