Haier HWO90S10EX2 Service Manual
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Haier HWO90S10EX2 Service Manual

Haier HWO90S10EX2 Service Manual

Built-in oven
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HAIER 90cm
BUILT-IN
OVEN
SERVICE MANUAL

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Summary of Contents for Haier HWO90S10EX2

  • Page 1 HAIER 90cm BUILT-IN OVEN SERVICE MANUAL...

  • Page 2: Table Of Contents

    CONTENTS 1. SAFETY WARNINGS ........................4 1.1 GENERAL SAFETY WARNINGS ................... .4 1.1 SAFETY FOR INSTALLATION ......................4 1.2 INFORMATION TO BE PROVIDED TO CONSUMER ............4 2. TECHNICAL TABLE FOR ELECTRICITY VALUES ............. 5 3. MOUNTING THE APPLIANCE / MOUNTING RULES / ADJUSTMENTS ......6 3.1 CHECKING THE MOUNTING PLACE AND ENERGY SOURCES……………………..6 3.1.1 Checking the Dimensions of the Mounting Place…………………………………….6 3.1.2 Checking the Electrical Installation………………………………………………..8...
  • Page 3 REPLACING THE CIRCUIT BREAKER ................27 REPLACING FRONT DOOR ....................28 REPLACING FRONT DOOR HINGE ..................29 REPLACING FRONT DOOR HANDLE ................31 REPLACING CHASSIS GASKET ..................32 REPLACING CHASSIS FAN PROTECTION SHEET ............32 REPLACING CIRCULATION PROPELLER ................. 33 REPLACING OVEN UPPER HEATING ELEMENT ............

  • Page 4: Safety Warnings

    1. SAFETY WARNINGS This part contains the safety instructions which are helpful to avoid the risks of personal injuries and material damages. The service manual includes the following symbols. Important information or useful hints regarding usage. Warning against the hazardous situations with regard to life and property. Warning against electric shocks.

  • Page 5: Technical Table For Electricity Values

    • In case of any power interruption, the time clock of the appliance must be re-set. As the latest settings are not stored in the processor memory in power interruptions. The time clock is restored to factory settings and displays the time as 12:00. The time must be set in accordance with the directives. •...

  • Page 6: Mounting The Appliance / Mounting Rules / Adjustments

    3. MOUNTING THE APPLIANCE / MOUNTING RULES / ADJUSTMENTS 3.1 CHECKING THE MOUNTING PLACE AND ENERGY SOURCES 3.1.1 Checking the Dimensions of the Mounting Place Location where the appliance will be used must be determined before starting the installation procedures. Appliance must not be installed in locations exposed to strong air currents.
  • Page 7 Figure 2 Figure 1...

  • Page 8: Checking The Electrical Installation

    Figure 3 3.1.2 Checking the Electrical Installation The following values regarding the appliance must be taken into consideration while checking the electrical installation for the appliance. A measurement device called wattmeter is used to check the suitable installation for appliance. Plug the appliance in the wattmeter and plug the wattmeter in the wall-outlet.
  • Page 9 See the oven mode you like to measure. Check how many watt the relevant mode is on wattmeter display. Disconnect the power supply of The power cable must not be the appliance before carrying out crushed, folded, squeezed or any operation on the electrical contact the hot parts of the installation.

  • Page 10: Component List / Component Operating Principles

    4. COMPONENT LIST / COMPONENT OPERATING PRINCIPLES 4.1 Grill Heating Element It is a heating element allows grilling in the electric oven operating with control knob. Controlled with a switch and thermostat beneath the control knob. 4.2 Lower Heating Element It is a heating element controlled with a switch beneath the control knob and allows in-oven cooking in the electric ovens at any desired temperature with the help of a thermostat.

  • Page 11: Electric Thermostat

    4.5 Electric Thermostat It is an electric component set to operate the heating elements at any desired temperature when turned on through the linked control knob. Senses the heat with a bulb inserted in the oven. The bulb enables turning on/off the switch located on the housing by dilating with the impact of heat, thermostat heating elements cool down since they are connected in series.

  • Page 13: Safety Thermostat

    4.9 Safety Thermostat The purpose of the safety thermostat is cut off the phase or neutral before the oven temperature exceeds a certain value when the thermostat on the oven is short-circuited or due to continuous operation of any heater resulting from a short circuit.

  • Page 14: Failure Flow / Diagnostic Diagrams

    5 FAILURE FLOW / DIAGNOSTIC DIAGRAMS 5.1 TIME CLOCK FAILURES 5.1.1 Time Clock Is Not Running Is the mains cord connected Connect oven to power to power supply? The customer must Does the electrical have the connection connection function? repaired or find a suitable power supply.

  • Page 15: Time Clock Is Running But Not Commanding While Thermostat Is Enabled

    5.1.2 Time Clock Is Running But Not Commanding While Thermostat Is Enabled Fit the outlet cables. Have you checked Replace the the clock cables? defective cables. Does the thermostat lamp Check the lamp. function? Replace the Does the thermostat thermostat function? Replace the Does the switch...

  • Page 16: Heating Element Failures

    5.2 HEATING ELEMENT FAILURES 5.2.1 Heating Is Not Functioning, Foods Cannot Be Cooked The customer must have the Does the electrical connection repaired or find a connection function? suitable power supply. Check the connections Does according to the the fuse blow? circuit diagram.

  • Page 17: Lamp Failures

    5.3 LAMP FAILURES 5.3.1 Oven Is Operating But Oven Lamp Is Not Lit Does the The customer must electrical have the connection connection repaired or find a function? suitable power supply. Is the bulb Tighten the bulb. tightened? Is the bulb Replace the bulb.
  • Page 18 5.3.2 Oven Is Not Operating Nor Oven Lamp Is Lit Is the switch Replace the switch. Tighten the Is the bulb tightened? bulb. Replace the Is the bulb OK? bulb. Replace the Are the cables cables.

  • Page 19: Thermostat Failures

    5.4 THERMOSTAT FAILURES 5.4.1 Oven Is Operating Continuously, Thermostat Does Not Break the Circuit Does the The customer must electrical have the connection connection repaired or find a function? suitable power supply. Disconnect Does the mains cord and thermostat enable check the cable the heating connections.

  • Page 20: Turbo Motor Failures

    5.5 TURBO MOTOR FAILURES 5.5.1 Oven Is Not Operating In Turbo Motor Mode, No Cooking Is Made The customer must Does the electrical have the connection connection function? repaired or find a suitable power supply. Replace the cables Are the cables according to the circuit diagram.

  • Page 21: Switch Failures

    5.6 SWITCH FAILURES 5.6.1 Switch Is Not Functioning, Oven Cannot Cook. The customer must Does the electrical have the connection connection function? repaired or find a suitable power supply. Are the Compress the cable cables. connections Replace the cables Are the cables according to the circuit diagram.

  • Page 22: Terminal Failures

    5.7 TERMINAL FAILURES 5.7.1 Electricity Is Not Received by the Terminal or Not Distributed In the Oven The customer must Does the electrical have the connection connection function? repaired or find a suitable power supply. Replace the mains Is the mains cord OK? cord.

  • Page 23: Plugging In The Oven Blows The Fuse

    5.7.2 Plugging In the Oven Blows the Fuse The customer must have the connection Does repaired or find a the plug function? suitable power supply. The customer must Is the fuse of have the house the house fuse fitted by a competent? qualified electrician.

  • Page 24: Ignition Failure Diagrams (For The Models Having Ignition Button)

    5.8 IGNITION FAILURE DIAGRAMS (For the Models Having Ignition Button) 5.8.1 No Spark Sound Loose contact in the Replace the ignition ignition switch switch. set. When pressing at least one button spark is struck, yet not on other burners. Complete the Under-button ignition washer of the washer is missing.

  • Page 25: Ignition Is Available But It Goes Off When Releasing The Button

    5.8.2 Ignition Is Available But It Goes Off When Releasing the Button Increase the Button feet leans against The buttons are displacemen the panel. And does not not aligned and provide adequate located in-side. by fitting a washer displacement to the thermal to the tap shaft.

  • Page 26: Sparking Sound Is Available

    5.8.3 Sparking Sound Is Replace the pierced Available Spark plug cable is spark plug cable. pierced. Locate the spark Spark plug cable is No spark on the plug cable. dislocated. non- flamed burner (never or sometimes) Move spark Spark plug terminal plug terminal jumps spark over...

  • Page 27: Measurements Made To Detect Failures In Components

    6 MEASUREMENTS MADE TO DETECT FAILURES IN COMPONENTS An example for ring heating element measurement. Multimeter set to heating The current and power drawn by If any value appears on the element measuring position to the components on the appliance multimeter screen, it means the measure the heating element is measured with a device called...

  • Page 28: Mounting / Demounting Components

    7. MOUNTING / DEMOUNTING COMPONENTS Note: How to demount the components is explained in the following part. Carry out the mentioned processes reversely while mounting the components. 7.1 REPLACING THE CIRCUIT BREAKER Remove the circuit breaker shell Remove the screw that connects by turning it right or left.

  • Page 29: Replacing Front Door

    7.2 REPLACING FRONT DOOR Open the front door. After opening the front door, open the clips locating on the front door hinge slot on the right and left sides by pulling them upwards. Hold the door on the right and left sides and remove the door from the hinge slots.

  • Page 30: Replacing Front Door Hinge

    7.3 REPLACING FRONT DOOR HINGE The front door glasses must be removed before replacing front door hinge. Push buttons on side of removable profile Remove metal profile above the glasses Remove inner glass that on the oven door.
  • Page 31 Pull hinges to remove. Remove screws by screwdriver.

  • Page 32: Replacing Front Door Handle

    7.4 REPLACING FRONT DOOR HANDLE Remove the screws on front glass. Remove the glass top profile by pressing right and left side after removing screws and plastic clips on side profiles. Take the released handle.

  • Page 33: Replacing Chassis Gasket

    7.5 REPLACING CHASSIS GASKET The tabs located on the sealing clamps on the chassis. You can replace the gasket by removing it from the tabs. 7.6 REPLACING CHASSIS FAN PROTECTION SHEET Remove the fan protection sheet by removing the There are four screws holding the fan screws with the help of a screwdriver.

  • Page 34: Replacing Circulation Propeller

    7.7 REPLACING CIRCULATION PROPELLER The fan protection sheet must be removed before this operation. Remove the nut located on the middle of the circulation propeller with the help of pointed nippers. The nut used here has left-hand threads. 7.8 REPLACING OVEN UPPER HEATING ELEMENT The heating element located on the upper side in the oven is attached to the chassis with two screws.

  • Page 35: Replacing Oven Lower Heating Element

    7.9 REPLACING OVEN LOWER HEATING ELEMENT For this operation, you must firstly remove the chassis base sheet and open the relevant of the insulation. Remove screws with the help of screwdriver and remove cables on the heating element. Push from sides of heating element cover plate and pull towards back side of oven as shown in picture.

  • Page 36: Replacing Thermostat And Thermostat Bulb

    7.11 REPLACING THERMOSTAT AND THERMOSTAT BULB Thermostat bulb and thermostat are one-piece. You must replace the thermostat to change the bulb. The thermostat bulb in the oven is removed from the place. Replace it with a new one by removing the two screws on the front panel.

  • Page 37: Replacing Signal Light

    7.13 REPLACING SIGNAL LIGHT Signal light is attached to the signal light plug located behind the panel with a socket. Pull and remove the socket. Fit the new signal light on the place of the old one in the switch. 7.14 REPLACING OVEN LAMP SOCKET For this operation, you must first remove the rear guard.

  • Page 38: Replacing Oven Isolation

    7.15 REPLACING OVEN ISOLATION For this operation, you must firstly remove the side walls and rear guard. Remove the wire of the insulation coiled around the chassis with wire. Replace the released insulation with a new one. 7.16 REPLACING OVEN WIRE SHELVES Push the hook that holds side racks on the direction of arrow 1 and release it.

  • Page 39: Replacing Catalytic Panel

    7.17 REPLACING CATALYTIC PANEL Catalytic Panel • Catalytic panels are located behind the wire racks of the oven, on the right and left walls and rear of the oven cavity. • Over time, oil and food odours permeate into enameled oven walls and heating elements. •...

  • Page 40: Replacing Oven Lamp

    7.19 REPLACING OVEN LAMP You must first open the oven door completely to replace the lamp in the oven. Remove the socket glass over the lamp by turning it in counter-clockwise direction. Remove the inner lamp by turning it in counter-clockwise direction. Perform these operations in reverse order after installing the new lamp.

  • Page 41: Replacing Oven Terminal Protection

    7.21 REPLACING OVEN TERMINAL PROTECTION For this operation, you must first remove the oven rear guard sheet. Release the kado terminal protection plastic off the tab attached to sheet on the upper part.

  • Page 42: Replacing Oven Terminal Box

    7.22 REPLACING OVEN TERMINAL BOX You must firstly remove the oven rear guard and terminal protective plastic before replacing the oven terminal. Grab and remove the oven inner power cables connected to the terminal from rear part by means of a nippers. Pry out the terminal cover from lower tabs by means of a screwdriver.
  • Page 43 Left L1: Phase Connection Brown Cable Right NL2: Neutral Connection Blue Cable Bottom Centre: Earthing Connection Yellow-Green Cable 7.24 CABLE SECTIONS TABLE NOMINAL CURRENT SUPPLY VOLTAGE VALUES CABLE RANGE 230 V 240 V 0-3A 3x0.75 0-659W 0-689W 0-719W 3-10A 660-2199W 690-2299W 720-2399W 10-16A...

  • Page 44: Removing The Oven Service Cover

    7.25 REMOVING THE OVEN SERVICE COVER Remove oven service cover to access the circuit breaker, thermostat, mechanical/digital clock. Remove the screws that connect the service Remove the screws that connect the service cover cover of the product to the top cover. on the sides of the product to the side walls by means of a screwdriver.

  • Page 45: Removing The Cooling Fan

    7.26 REMOVING THE COOLING FAN Service cover and top cover plate must be removed before this operation. Remove the closed bolt to remove the Remove the screws that connects to cooling propeller. duct. Remove the propeller before removing the motor assembly. Then remove two screws to which motor group is connected.

  • Page 46: Removing The Digital Timer

    7.27 REMOVING THE DIGITAL TIMER 1. Remove the cables. 2. By a pliers unbend and make straight the locking plastics. 3. Pull the timer and remove from the panel...

  • Page 47: Electrical Scheme

    7.28 ELECTRICAL SCHEME...

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