Hotpoint MWH424.1X, MWH424.1Q Service Information
Indesit Company UK Ltd
© 2014 Reg. Office: Peterborough PE2 9JB Registered in London: 106725
Service
Information
HOTPOINT
BUILT IN
COMBINATION
MICROWAVE
OVENS
ELECTRONIC
WITH
TOUCH &
VARIABLE
CONTROL
Models Comm.
Covered Code
MWH424.1X 82011
MWH424.1Q 84362
5413400 Issue 1 Nov. 2014
C00306264
SM003956
Changes in this Issue
• New Service Manual
• New Models
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Service Manual UK
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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. Servicing of electrical appliances must be undertaken with the appliance disconnected (unplugged) from
the electrical supply.
4. Servicing must be preceded by Earth Continuity and Insulation Resistance checks.
5. Personal safety precautions must be taken to protect against accidents caused by sharp edges on metal
and plastic parts.
6. After servicing, the appliance must be rechecked for Electrical Safety. In the case of appliances which
are connected to a water supply (i.e.: Washing Machines, Dishwashers & Food Centres etc.) checks
must be made for leaks from seals gaskets and pipe work and rectification carried out where necessary.
7. It can be dangerous to attempt ‘DIY repairs / maintenance on complex equipment and the Company
recommends that any problem with the appliance is referred to its own Service Organisation.
8. On completion of any servicing, the Microwave Oven must be checked to verify compliance with the
current safety standard for microwave leakage.
9. Whilst the Company has endeavoured to ensure the accuracy of the data within this publication they
cannot hold themselves responsible for any inconvenience or loss occasioned by any error within.
INDEX
Safety Notes & General Servicing Advice. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Safety Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
General Rules For Microwave Cooking. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Electrical Connection, Disposal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 - 7
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 - 10
Setting Up the Oven, Start-Up & Use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 - 18
Important Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 - 20
Utensils . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Maintenance & Care, Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Internal Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 - 26
Circuit Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Common Breakdown & Means of Repairing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Service Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 - 31
Fault Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
Door Switch Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Dismantling Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 - 43
Other Items Supplied . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44
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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 & Grill,
Microwave & Fan Oven
10 Microwave Power Levels, 2 Grill Power Levels
14 Automatic Programmes
3400 W cooking power
Dimensions Unpacked Packed
Height 454 mm 550 mm
Width 594 mm 700 mm
Depth 568 mm 670 mm
Oven Cavity Size
Height 25 cm Usable 23 cm
Width 42 cm Usable 40 cm
Depth 40 cm Usable 40 cm
Interior Stainless Steel
Capacity 44 litres
Weight 41 kg unpacked, 44 kg packed
Electrical Supply 230/240 Volts AC @ 50 Hz
Fuse Rating 16 amp Absorbed current - Requires Hard Wiring to 16A Radial
Transformer MD-903FMR-1, Class 220
Power Total rating 3400W @ 230V
Magnetron Type WITOL 2M519H D622
Diode E24866
Ventilation Fan OEB-2506C2 0.38 A
Capacitor 1.10uf
Turntable Motor TYJ50-8A7F 0.3 W
Interior Light 25W - Part Number C00293931
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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.
• WARNING: Liquids and other foods must not be heated in sealed containers since they are liable
to explode. Eggs in their shell and whole hard boiled eggs should not be heated in microwave
ovens since they may explode even after heating has ended.
• WARNING: Children should not be allowed near the oven when it is in operation, as this may
result in severe burns.
• Do not attempt to operate the oven with the door open by tampering with the safety devices.
• Do not operate the oven if objects of any kind get stuck between the front panel of the oven and
the door. Always keep the inside of the door clean, using a damp cloth and non-abrasive
detergents.
• Do not allow dirt or remains of food to accumulate between the front panel of the oven and the
door.
• The following warnings must be observed when the door is open:
a) Do not place heavy objects on the door or pull the handle downwards any further as the
appliance may tip over.
b) Never place hot containers or pans on the door.
• If the power cable becomes damaged, this must be substituted only by specialised personnel
authorised by the manufacturer.
• If smoke is seen, switch off or unplug the appliance and KEEP THE DOOR CLOSED in order to
stifle any flames.
• Only use utensils that are suitable for use in microwave ovens. In order to avoid overheating and
the consequent risk of fire, it is advisable to supervise the oven when cooking food in disposable
containers made of plastic, cardboard or other inflammable materials and when heating small
quantities of food.
• Never place the turntable in water after it has been heated for a long time. The high thermal shock
resulting would break the glass turntable.
• Do not preheat or operate the microwave oven in any way without food in the oven. Sparking can
occur if this warning is ignored and damage to the magnetron.
• Before using the oven, make sure that utensils and containers are suitable for microwave ovens.
• During use the appliance becomes hot. Do not touch the heating elements inside the oven.
• When heating liquids (water, coffee, milk), it is possible that the contents may suddenly start to boil
and spill violently as a result of delayed boiling, causing scalding. To avoid this happening, place a
heat resistant plastic spoon or a glass rod in the container before starting to heat liquids. Care
should be taken when handling the container.
• Do not heat spirits with high alcoholic content, not large quantities of oil, as these could catch fire.
• The contents of feeding bottles and baby food jars should be stirred or shaken and the
temperature should be checked before consumption in order to avoid burns. It is also advisable to
stir or shake the food in order to ensure it is an even temperature.
When using a commercially available bottle steriliser, before turning the oven on, ALWAYS
make sure the container is filled with the quantity of water indicated by the manufacturer.
• NOTE: When the oven is used for the first time it is possible that for a period of
approximately 10 minutes it may produce a 'new' smell and a small amount of smoke.
This is only a result of protective substances applied to the heating element.
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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; if the food is thicker, the core of the food will be cooked by conduction, as in
traditional cooking.Heat is produced very quickly only in the food itself, whereas the container being
used warms up indirectly by means of heat given off by the heated food. This prevents food from
sticking to its container, so you can use very little fatty substance or, in some cases, no fat at all during
the cooking process.
Therefore cooking in a microwave oven is considered to be healthy and good for ones diet.
In contrast to traditional methods, by cooking in a microwave, foodstuffs are less dehydrated, lose less
of their nutritional value and retain more of their original flavour.
Basic Rules for Correct Cooking with a Microwave Oven
1) In order to set the cooking times correctly, remember that when you increase the amount of
foodstuffs, the cooking temperatures must likewise be proportionally increased and vice versa.
It is important to respect the 'standing' times. Standing time means that period during which the
food must be left to 'rest' after being cooked so as to allow an even greater spreading of the
temperature within. The temperature of meat, for example, will rise about 5° - 8°C (approximately
9° - 15°F) during the standing time. Standing times may be observed either inside or outside the
oven.
2) One of the main things you must do is stir the food several times while it is being cooked.
This helps make the temperature distribution more uniform and thus shortens the cooking time.
3) It is also advisable to turn the foodstuff over during its cooking process. This applies especially for
meat, whether it is in large pieces (roasts, whole chickens, etc.) or small (chicken breasts, etc.).
4) Foods having a skin, shell or peel (e.g. apples, potatoes, tomatoes, frankfurters, fish) must
be pierced with a fork in several points so as to permit steam to escape and to prevent
those items from exploding.
5) If you are preparing a large number of portions of the same food item (e.g. boiled potatoes), place
those portions in a Pyrex dish in order to have them cook in a uniform manner.
6) The lower the temperature at which a foodstuff is placed in a microwave oven, the longer the
cooking time required. Food having a room temperature will cook more quickly than food having a
refrigerator temperature.
7) Always do your cooking by placing the food in a food container in the centre of the turntable.
8) It is perfectly normal for condensation to form inside the oven and near the air outlet.
To reduce
such condensation, cover the foodstuffs with clear sheet, wax paper, a glass lid or simply
an overturned plate. Foods having water content (e.g. greens and vegetables) cook better when
covered.
The covering of food also helps keep the oven clean on the inside. Use clear sheet made
expressly for microwave ovens.
9) Do not cook eggs in their shells; the pressure, which builds up on the inside, would cause the
egg to explode, even after cooking gas finished. Do not heat up eggs, which have already been
cooked, unless they are scrambled.
10) Do not forget to open containers, which are airtight or sealed, before heating or cooking food in the
oven. The pressure on the inside of the container would rise, causing them to explode even after
cooking has finished.
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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. During installation and
maintenance operations, the appliance must be disconnected from the mains circuit-breaker or the
fuses must be removed.
The appliance must be connected using a power cable equipped with 3 1.5mm2 conductors (Live +
Neutral + Earth), H05RR-F 300V/500V specification, connected to a single phase 230-240V~network
in accordance with installation requirements. The safety wire (Green-Yellow) is connected to the
appliance's Earth terminal and must be connected to the installation Earth.
If the appliance has an electrical connection, it must remain accessible after the appliance has been
built in.
The oven's neutral (blue wire) must be connected to the network's neutral.
It must be possible to disconnect the appliance from the power supply, by fitting a switch on the fixed
wiring system in accordance with installation rules.
Ensure that:
- The electrical power has sufficient voltage. - the power cable is in good condition;
- The diameter of the wires complies with installation requirements.
- The electrical installation is equipped with protection of at least 16 amps.
CAUTION
Personal Injury Hazard
It is hazardous for anyone other than a competent person to carry out any service or repair operation
that involves the removal of a cover which gives protection against exposure to microwave energy.
• Please observe the installation instructions provided and note that this appliance should only be
installed by an approved qualified installer.
• In case a new connection is needed, installation and cable connection must only be done by an
approved qualified installer. If the connection is no longer accessible following installation, a
double-pole disconnecting device must be present on the installation site with a contact gap of at
least 3 mm.
• Adaptors, multiway strips and extension cables must not be used. Overloading can result in fire.
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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. Old appliances must be collected separately in order to optimise the recovery and
recycling of the materials they contain and reduce the impact on human health and the environment.
The crossed out 'wheeled bin' symbol on the product reminds you of your obligation, that when you
dispose of the appliance it must be separately collected.
Consumers may take their old appliance to public waste collection areas, other communal collection
areas, or if national legislation allows return it to a retailer when purchasing a similar new product.
All major household appliance manufacturers are active in the creation of systems to manage the
collection and disposal of old appliances.
SPECIFICATIONS
Rated Voltage: 240V ~ 50Hz
Rated Input Power (Microwave): 1650W
Rated Output Power (Microwave): 900W
Rated Input Power (Grill): 1750W
Rated Input Power (Convection): 1750W
Max. Power: 3350W
Oven Capacity: 44L
Turntable Diameter: 360 mm
External Dimensions: 594 x 454.5 mm x 658 mm
Net Weight: Approximately 41 kg
According to Waste of Electrical and
Electronic equipment (WEEE) directive,
WEEE should be separately collected and
treated. If at any time in the future you
need to dispose of this produce, please do
NOT dispose of this product with
household waste.
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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.
a) Do not attempt to operate this oven with the door open since this can result in harmful exposure to
microwave energy. It is important not to break or tamper with the safety interlocks.
b) Do not place any object between the oven front face and the door or allow soil or cleaner residue
to accumulate on sealing surfaces.
c) WARNING: If the door or door seals are damaged, the oven must not be operated until it has been
repaired by a competent person.
ADDENDUM
If the apparatus is not maintained in a good state of cleanliness, its surface could be degraded and
affect the life span of the apparatus and lead to a dangerous situation.
Important information about installing
This appliance is NOT intended for use in a commercial environment.
Placement
• Danger! Do not disassemble this appliance. Touching internal components of this appliance can
cause serious personal injury or death.
• Place the microwave oven on a firm, flat surface.
• Make sure that there is sufficient ventilation around the microwave oven. At the rear and sides
keep at least 10 cm free.
• Do not cover the air vents.
• The adjustable feet should not be removed.
• Do not place the microwave oven near a heat source.
• Transmitting and receiving equipment such as radios and televisions can affect the operation of
the microwave oven.
The accessible surface may be hot during operation.
100
600
min 580
560-568
455
22
558-568
min 460
542
540
min. beluchtingsopp. 250 cm
2
min. beluchtingsopp.
250 cm
2
450
600
min
550
min 580
560
20
min
min.
550
min. aeration surface 250 cm
2
min. aeration surface
250 cm
2
454.5
458+2
595
594
595
5
68
455
454.5
444
45
550
455
22
542
20
454.5
595
594
595
5
68
455
454.5
444
550
560
600
Installation Diagrams
Note: There should be
a gap above the oven
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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. Open the door and fasten the microwave with the
screws that were supplied.
• Fully insert the appliance and centre it.
• Do not kink the connecting cable.
• Screw the appliance into place.
• The gap between the worktop and the appliance must
not be closed by additional battens.
Install the Grill Pan
1. Be sure the angle of the shaft.
2. Adjust the angle of the grill pan and the shaft.
3. Put the pan into the cavity and adjust slightly
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TURNTABLE INSTALLATION
a) Never place the enamel tray upside down. The enamel tray
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.
d) If the enamel tray breaks or cracks, it should be replaced.
Hub (underside)
Enamel Tray
Turntable Shaft
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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 1
Turntable Ring Assembly 1
Instruction Manual 1
Control Panel & Features
1. Control Panel
2. Grill Element
3. Light
4. Level
5. Door Glass
6. Hinge
7. Turntable Shaft
8. Short Grill Rack
9. Long Grill Rack
10. Grill Pan
1. Function Knob
2. Power/Weight Button
3. Quickly Preheating Button
4. On/Off Button
5. Temperature/Automenu Button
6. Clock Button
7. Start/Pause Button
8. Selection Knob
1
2
3
4
5
6
7
9
8
10
1
2
3
4
5
6
7
1
8
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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.
1) Turn knob to set the right time (between 00:00 and 23:59.)
2) After you have set the right time, press . The clock has been set.
Note:
1) If you want to change the time, you have to press and hold the button for 3 seconds.
The actual time disappears and then the time will blink in the display.
Turn knob to set the new time and press the button to confirm the setting.
2) If you do not want to see the clock in the display, press button briefly. The time disappears.
Press again, and the clock appears in the display again.
2. Microwave Cooking
1) Press the ON/OFF button to activate the microwave function, 01:00 is blinking in the display and
the microwave icon appears. If no operation in 10 seconds, the current power will be confirmed
automatically.
2) Turn knob to set the cooking time.
The max. cooking time depends on the power that has been set. When the power is 900W, the
MAX. time is 30 minutes and other powers are 90 minutes.
3) Press button to adjust the microwave power.
4) Turn knob to set the microwave power (between 100W to 900W).
5) Press button to start cooking.
NOTE: - The step quantities for the adjustment time of the coding switch are as follows:
0---1 min 1 second
1---5 min 10 seconds
5---15 min 30 seconds
15---60 min 1 minute
60 min 5 minutes
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Microwave Power Chart
You can see from the table below from which power levels you can choose and for which foods the
power levels are suitable.
Display 900W 700W 450W 300W 100W
Power Level Food
900 W
- Boiling water, reheating
- Cooking chicken, fish, vegetables
700 W
- Reheating
- Cooking mushrooms, shell fish
- Cooking dishes containing eggs and cheese
450 W - Cooking rice, soup
300 W
- Defrosting
- Melting chocolate and butter
100 W
- Defrosting sensitive/delicate foods and irregularly shaped foods
- Softening ice cream
- Allowing dough to rise
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FUNCTIONS
Function Mode
Microwave Microwave
Microwave
Use the microwave function to cook and reheat vegetables,
potatoes, rice, fish and meat.
Heating
Hot air
Hot air
With hot air you can prepare meals in the same way as you
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.
Grill with fan
Grill with fan
Use this function to roast meals evenly and at the same time
give the meal a brown crust.
Grill
Grill
The grill is very suitable to prepare thin pieces of meat and
fish.
Function Mode
Heating
Hot air+
Bottom heat
Use this function to roast big pieces of meat, pizza, etc.
+
Combination
Hot air
Microwave + Hot air
Use this function to roast meals quickly.
Grill with fan
Microwave + Grill with fan
Grill
Microwave + Grill
Use this function to cook meals quickly and at the same time
give the meal a brown crust (also au gratin). The microwave
and the grill ar e activated at the same time. The microwave
is cooking and the grill is roasting.
Hot air+
Bottom heat
Microwave + Hot air + Bottom heat
Use this function to roast big pieces of meat, pizza, etc.
Auto-programs P01 - P13
Automatic cooking programs
Defrost
Defrost
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