Maytag Gemini™ Range Service Manual 16010107 Issued 10/00
INTRODUCTION The manual is printed in a loose format and is divided into sections relating to a general group of components and/or service procedures. Each section is further subdivided to describe a particular component or service procedure. The subdividing of the subject matter, plus the loose leaf form, will facilitate the updating of the manual as new revised components are added or new models are introduced.
16010107 Introduction ©2000 Maytag Appliances Sales Company ii
CONTENTS INTRODUCTION ............................................................................................................................... i CONTENTS ..................................................................................................................................... iii SECTION 1. GENERAL INFORMATION .................................................................................... 1-1 SECTION 2. ELECTRICAL COMPONENTS & TESTING ..................................................
SURFACE ELEMENT SWITCH .................................................................................................. 4-4 DUAL ELEMENT SWITCH ......................................................................................................... 4-4 ELECTRICAL CONNECTIONS/VOLTAGE ................................................................................. 4-5 SECTION 5. TROUBLESHOOTING ............................................................................................
SECTION 1. GENERAL INFORMATION Bake: There will be two separate bake keys, one for each oven. When the upper oven is chosen there will be a rapid preheat activated which turns both elements on. If the lower oven is selected the elements will cycle at the normal rate. The normal rates for the bake functions in both ovens are: 6 seconds for the broil element, followed by 54 seconds for the bake element. Broil: There will be two separate broil keys, one for each oven.
16010107 Section 1.
SECTION 2. ELECTRICAL COMPONENTS & TESTING ELECTRICAL TEST EQUIPMENT Description Part Number The equipment required to service Maytag products depends largely upon the condition you encounter.
16010107 Section 2.
SECTION 3. COMPONENT ACCESS EXPLODED VIEW 16010107 Section 3.
As a general rule, the appliance should ALWAYS be disconnected from power source before servicing appliance or replacing component parts. Failure to disconnect the power increases the likelihood that a servicing error or mistake will result in serious or fatal injuries. 2. Remove the two screws securing the main top to the frame. 3. Lift up slightly and slide the main top forward to access the wire harness. Disconnect the harness. 4. Lift the top off and lay aside securely with under side up. MAIN TOP 5.
To Access Broil Element: Bake Element Element Wattage: 208/240 volts @ 2250/3000 watts. Approximately 19Ω The bake function controls the Bake and Broil heating elements. During a Bake cycle, the Broil element will be on 6 seconds of a 60-second duty cycle, and then the Bake element will be on the remaining 54 seconds. The Bake and Broil elements will be staged with the exception of the rapid preheat.
Oven Cavity Components (Electric) Open or remove the oven door. The following components are accessible: • • • • • Sensor Broil Element Convect Fan Racks Oven Sensor Broil Element Convect Fan Cover Bake Element Convect Fan Cover Bake Element Convection Fan (Electric) Remove six screws (as shown) from the perimeter of the convection fan cover. This will loosen the cover, but it cannot be removed easily without positioning it to clear the rack guides.
Convect Fan Motor and Blade (Electric) Motor Connectors Motor After the convect fan mounting plate is removed, motor connectors, motor, motor mount and insulation is accessible. Motor connectors are also exposed by removing the back panel (see range back removal). The convect fan blade is attached to the motor’s “D” shaft using a hex set screw. The fan blade must be loosened and taken off the motor shaft before the motor can be removed.
ELECTRONIC CLOCK AND OVEN CONTROL To Gain Access To Electronic Oven Control 1. Disconnect the appliance from power source before servicing. 2. Remove two screws securing backguard panel to the end caps. 3. Remove two (2) screws securing backguard panel to backguard housing. (Screws located between control panel and main top). 4. Lift backguard panel up, tilt forward, and lay panel on protected surface of main top for servicing. 5. Remove two (2) screws securing controlmounting plate to backguard. 6.
Signal Lights Oven Light Replacement Range is equipped with two signal lights to indicate when a surface element is on. The light will remain on until the element is turned off. After a cooking operation, be sure element and signal light is off. The oven light used on the Gemini is a 12 volt 10 Watt Halogen bulb. The light automatically comes on when the door is opened or activation may occur via the light pad when the door is closed. The light will not operate during a clean cycle.
HI-LIMIT THERMOSTAT CAUTIONS: The HI-Limit Thermostat is mounted to range main back. The purpose of this thermostat is to break line voltage to oven control in case of a runaway temperature. Range may be removed from cabinetry for rear serviceability. • Do not attempt to open or close door or operate oven until door is properly replaced. • Hinge arms are spring mounted and will slam shut if accidentally hit. Never place hand or fingers between the hinges and the front oven frame.
seated on the hinges. Push down on the top corners of the door to completely seat door on hinges. Door should not appear crooked. NOTE: The oven door on a new range may feel “spongy” when it is closed. This is normal and will decrease with use. To Disassemble Door: 5. Slide the doorframe and glass off liner from the bottom. 6. Remove four (4) screws securing the door handle to the door liner. (Two on the sides and two in front). 7. Remove two (2) screws securing door baffle to liner. 8.
LOWER DOOR To Replace Lock Assembly 7. Remove two (2) screws securing lock assembly to frame. 1. Disconnect the appliance from power source before servicing. 8. Slide assembly out. 2. Open oven door or remove for convenience. 9. Reverse procedure to reinstall. 3. Remove main top and slide forward. Disconnect wire harness. (See Top Removal). Lower Latch Assembly 1. Disconnect the appliance from power source before servicing. 4. Lift top off and lay aside securely. 5.
3. Remove main top and slide forward. Disconnect wire harness. (See Top Removal). Note: Make sure the insulation is back in place when finished. Failure to do so will result in hot spots and poor baking complaints. LOWER LATCH ASSEMBLY 5. Reattach band to the bottom of frame. 1. Disconnect the appliance from power source before servicing. 6. Reconnect wiring to the lock switches. 7. Reinstall the side panel. 2. Remove main top as outlined in main top removal. 8. Reinstall the rear panel. 3.
The convenience outlet circuit breaker may trip if the small appliance plugged into it exceeds 10 amps. To reset the circuit breaker, press the switch located on the lower edge of the backguard. (See figure below). OVEN DOOR HINGE Note: The door hinges are colored coded for ease in installation. The upper spring hook is gold and the lower spring hook is white. LEVELING LEGS SPECIFICATIONS Some floors are not level. For proper baking, your range must be level.
Lower Oven • Is equipped with two RollerGlide™ racks. To remove oven racks: • Pull rack straight out until it stops at the lock-stop position; lift up on the front of the rack and pull out. • For lower oven racks, pull both the rack glide and rack base out together. Multiple Rack Cooking: Two Rack: Use rack position 2 and 4, or 1 and 4.
NOTES 16010107 Section 3.
SECTION 4. ELECTRICAL TOASTING CIRCUIT (Upper Oven Only) OVEN CIRCUITS To Access Bake Element: Upper Oven Only To Access Broil Element: 1. Disconnect power from unit before servicing. 1. Disconnect power from unit before servicing. 2. Remove door for more accessibility. 2. Remove door for more accessibility. 3. Remove 2 screws securing bake element to back of oven cavity. 3. Remove broil support brackets (2), and remove 2 screws securing broil element to back of oven. 4.
SURFACE ELEMENTS - CERAN Verify there is proper voltage applied to the oven (the range may have blown a fuse or circuit breaker). A quick check is to see if the other elements heat. If not, check the voltage at the electrical outlet and check to see that the power cord is wired correctly. ELECTRICAL RATINGS: 240VAC 2200W TOTAL 750W INNER RING 1450 OUTER RING COLD RESISTANCE: 74.6 Ohms (INNER)±5 38.
To check oven sensor: 1. Access sensor wires as outlined under sensor removal. 2. Set meter to RX1000 Scale. 3.
TRANSFORMER, STEPDOWN (12V) Electrical Ratings: Input Voltage: 120 Volts Operating Frequency 60 Hz Output Voltage: 7-12 VAC at 10W Load 11.6 ± .2 VAC at 20W Load 11.1 ± .3 VAC SURFACE ELEMENT SWITCH DUAL ELEMENT SWITCH 16010107 Section 4.
ELECTRICAL CONNECTIONS/VOLTAGE Range Amperage: The total range wattage is stamped on model plate in kilowatts, (kilowatt = 1,000 watts) to determine amperage for fuse or circuit breaker: • Check incoming voltage at range main terminal block (pigtail) see illustration. • Divide voltage into total wattage. Example: 10. K.W. (stamped on model plate) X 1,000 = 10,000 watts. Voltage (at terminal block) is 240 VAC. 10,000 ÷ 240 = 41.6 (AMPS).
NOTES 16010107 Section 4.
SECTION 5. TROUBLESHOOTING GEMINI DOUBLE OVEN CONROLS The control is activated via a membrane switch which contains the function pads and 10 key digi-pad. Data can be entered either by choosing the function and entering a value or by choosing the function and using the Auto Set pad. Values for the Auto Set pad are listed below.
FAULT CODES Fault Codes, Displayed in Upper Time Digits: There are three major fault codes that will be displayed in the time digits of the upper clock display to the left of the colon. Minor fault codes are displayed in the time digits to the right of the display colon, these are used to direct the technician to more specific locations for diagnosis. Major fault codes are as follows: F1: Temperature runaway. Membrane switch shorted.
Engineering Mode: Used to view the actual oven temperature for both ovens at all times, even when an oven function is active. This mode will also display the current fault code for 5 seconds in the time digits. Enter the engineering mode by pressing the Bake Key of either oven, enter a bake temperature of 100ºF, then hold Bake down for 3 seconds within 30 seconds of initial Bake press. The mode can be exited by pressing Cancel. Oven Light: Oven light key toggles the oven light on and off.
TROUBLESHOOTING GUIDE Check these points if . . . • • • • • • Part or all of the appliance does not work. ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ • • • • • ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ • Baking results differ from previous oven.
TROUBLESHOOTING GUIDE Continued... Check these points if . . . • • • • • Food is not broiling properly. ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ ○ Moisture condensation collects on oven window.
PARTS LIST REPLACEM ENT PARTS PART NAM E PART NUM BER M ain Top Assem bly (Black) 74004515 M ain Top Assem bly (White) 74004516 Hinge, Oven Door (EURO) 74003968 Hinge, Oven Door Upper Gem ini 74004523 Switch, Infinite 2600 7403P239-60 Switch, Dual Elem ent 74002144 Elem ent, Broil 3600W/6Pass 74003040 Elem ent, Bake Upper Gem ini 74004105 Elem ent, Broil Upper Gem ini 74004106 Elem ent, Bake Lower Oven 74004107 Elem ent, Ribbon 1200W 74001011 Elem ent, Ribbon 2200W 74001012 Elem en
FAULT IDENTIFICATION SUMMARY Fault Suspect Failure Area Correction When Checked F0-0 No Fault None Anytime F1-1 Runaway Cook Upper Oven Check the sensor 1050-1100 ohms, wiring, control Every 6 seconds that the control sees the latch unlocked. F1-2 Runaway Cook Lower Oven Check the sensor 1050-1100 ohms, wiring, control Every 6 seconds that the control sees the latch unlocked F1-3 Runaway Clean Upper Oven Temperature above 650º F.
Fault Suspect Failure Area Correction When Checked F3-1 Sensor Upper Oven Ohm Sensor (1050-1100 ohm s) @ room tem perature Every 6 seconds F3-2 Sensor Lower Oven Ohm Sensor (1050 - 11 ohm s) @ room tem perature Every 6 seconds F9-1 Latch Switch Upper OVen Check switches and wiring to latch assem bly Every 60 seconds that the control sees the door locked F9-2 Unlock Switch Upper Oven Check switches and wiring to latch assem bly Every 60 seconds that the control sees the door locked F9-3
SECTION 6. WIRING DIAGRAMS MER6550AA*, MER6550BA* Wiring Diagram 16010107 Section 6.
MER6550AA*, MER6550BA* Schematic Diagram 16010107 Section 6.
MER6550AC, MER6550BC* Wiring Diagram 16010107 Section 6.
MER6550AC*, MER6550BC* Schematic Diagram 16010107 Section 6.
MER6770AA*, MER6771AA*, MER6870AA*, MER6871AA*, Wiring Diagram 16010107 Section 6.
MER6770AA*, MER6771AA*, MER6870AA*, MER6871AA*, Schematic Diagram 16010107 Section 6.
MER6770AC*, MER6870AC* Wiring Diagram 16010107 Section 6.
MER6770AC*, MER6870AC* Schematic Diagram 16010107 Section 6.
MER6772BA*, MER6872BA* Wiring Diagram 16010107 Section 6.
MER6772BA*, MER6872BA* Schematic Diagram 16010107 Section 6.
MER6772BC*, MER6872BC* Wiring Diagram 16010107 Section 6.
MER6772BC*, MER6872BC* Schematic Diagram 16010107 Section 6.
Maytag Appliances Sales Company Customer Service 240 Edwards Street, S.E.
