Maytag Gemini MER6770AAW Service Manual
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Maytag Gemini MER6770AAW Service Manual

Maytag Gemini MER6770AAW Service Manual

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Maytag
Gemini™
Range
Service Manual
16010107
Issued 10/00

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Donald Bretches
June 8, 2025

In case of a large offset between oven displayed temperature and actual oven temperature as measured with an independent thermocouple, how to reduce the offset?

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Summary of Contents for Maytag Gemini MER6770AAW

  • Page 1 Maytag Gemini™ Range Service Manual 16010107 Issued 10/00...
  • Page 2 This service manual is a valuable tool and care should be taken to keep it up-to-date by promptly and proper filing of subsequent pages as they are used. MODELS COVERED IN THIS MANUAL: MER6770AAW MER6770AAB MER6770AAC 16010107 Introduction ©2000 Maytag Appliances Sales Company...
  • Page 3 16010107 Introduction ©2000 Maytag Appliances Sales Company...

  • Page 4: Table Of Contents

    OVEN CIRCUITS ........................4-1 SURFACE ELEMENTS - CERAN ....................4-2 DUEL ELEMENT ......................... 4-2 PROBE, SENSOR / BOTH OVENS .................... 4-2 HOT SURFACE LIGHTS ......................4-3 SURFACE INICATOR LIGHTS ....................4-3 TRANSFORMER, STEPDOWN (12V) ..................4-4 16010107 Contents ©2000 Maytag Appliances Sales Company...
  • Page 5 SECTION 5. TROUBLESHOOTING .................... 5-1 GEMINI DOUBLE OVEN CONTROLS ..................5-1 FAULT CODES ........................... 5-2 RELAY BOARD .......................... 5-3 TROUBLESHOOTING GUIDE ....................5-4 PARTS LIST ..........................5-6 FAULT IDENTIFICATIONS SUMMARY..................5-7 SECTION 6. WIRING DIAGRAMS ....................6-1 16010107 Contents ©2000 Maytag Appliances Sales Company...

  • Page 6: Section 1. General Information

    10 minutes and maximum temperature of 550ºF. Toasting is only available when the lower oven is not in use. If chosen during lower oven operation the display will scroll an information message regarding use. 16010107 Section 1. General Information ©2000 Maytag Appliances Sales Company...
  • Page 7 16010107 Section 1. General Information ©2000 Maytag Appliances Sales Company...

  • Page 8: Section 2. Electrical Components & Testing

    SECTION 2. ELECTRICAL COMPONENTS & TESTING ELECTRICAL TEST EQUIPMENT Description Part Number Analog Test Meter 20000005 The equipment required to service Maytag products depends largely upon the condition Digital Watt/Am p/Volt/Ohm / 20000019 you encounter. Locating a malfunction will Temperature M eter...
  • Page 9 16010107 Section 2. Electrical Components & Testing ©2000 Maytag Appliances Sales Company...

  • Page 10: Section 3. Component Access

    SECTION 3. COMPONENT ACCESS EXPLODED VIEW 16010107 Section 3. Component Description ©2000 Maytag Appliances Sales Company...

  • Page 11: Main Top

    Ω 1580/2200 watts. Approximately 27 1. Disconnect the appliance from power the outer element. 208/240 volts @ 580/ Ω source before servicing. 750 watts. Approximately 73 for the inner element. 16010107 Section 3. Component Description ©2000 Maytag Appliances Sales Company...

  • Page 12: Bake Element

    The bake element is inactive during a broil cycle. During a broil cycle, the control will monitor the oven temperature and cycle the broil element on and off to obtain the selected temperature. 16010107 Section 3. Component Description ©2000 Maytag Appliances Sales Company...

  • Page 13: Oven Cavity Components (Electric)

    Three screws (shown) secure the convection fan mounting plate, remove these, to allow access to the motor and connectors. Screws Also shown here are the screws that secure the bake and broil elements. 16010107 Section 3. Component Description ©2000 Maytag Appliances Sales Company...

  • Page 14: Convect Fan Motor And Blade (Electric)

    Hex Head Set Screw Note: When reinstalling the convect assembly, be sure to check that no loose insulation is visible in the fan area or anywhere in the oven cavity. 16010107 Section 3. Component Description ©2000 Maytag Appliances Sales Company...

  • Page 15: Electronic Clock And Oven Control

    8. Reverse procedure to replace. The infinite switch is a rotary switch, which controls the power dissipated by a heating element. A heater-bimetal opens and closes the cycling contacts, which applies and 16010107 Section 3. Component Description ©2000 Maytag Appliances Sales Company...

  • Page 16: Signal Lights

    5. Release the tabs securing the switch to the top. Once the tabs are released the switch can be removed. 6. Reverse procedure to replace. Bulb specifications G4 Type Halogen Bi-Pin 10 w -12V 16010107 Section 3. Component Description ©2000 Maytag Appliances Sales Company...

  • Page 17: Hi-Limit Thermostat

    3. Slide the door down onto the hinge some cases, it could cause the range to tip over, breakage of the door, or serious injury. arms until the door is completely 16010107 Section 3. Component Description ©2000 Maytag Appliances Sales Company...

  • Page 18: Upper Door

    The 4. Remove four (4) screws securing the gasket is secured with clips inserted into door trim at the top. door liner. UPPER DOOR 16010107 Section 3. Component Description ©2000 Maytag Appliances Sales Company...

  • Page 19: Lower Door

    4. Lift top off and lay aside securely. 2. Remove main top assembly as described 5. Remove two (2) screws securing lock previously and lay aside securely. assembly to oven frame in front. 6. Disconnect wiring. 3-10 16010107 Section 3. Component Description ©2000 Maytag Appliances Sales Company...

  • Page 20: Lower Latch Assembly

    8. Complete hinge assembly may be removed. 3. Make sure the screw holes of the assembly line up with the screw holes in 9. Reverse procedure to reinstall. the frame. 4. Reinsert the screws. 3-11 16010107 Section 3. Component Description ©2000 Maytag Appliances Sales Company...

  • Page 21: Oven Door Hinge

    If the surface element is turned on, food, grasp the top the cord and outlet wil be damaged. edge of the rack. 3-12 16010107 Section 3. Component Description ©2000 Maytag Appliances Sales Company...

  • Page 22: Rack Positions

    To replace oven racks: roaster is on the lower rack. Contact your Maytag dealer for the "HALFRACK" • Place rack on the rack support in the Accessory Kit or call 1-800-688-8408.
  • Page 23 NOTES 3-14 16010107 Section 3. Component Description ©2000 Maytag Appliances Sales Company...

  • Page 24: Section 4. Electrical

    5. Disconnect wiring. Use Caution: Space is limited. 6. Remove/replace element as necessary. 5. Disconnect wiring. 7. Reverse procedure to reinstall. 6. Remove/Replace element as necessary. 7. Reverse procedure to reinstall. 16010107 Section 4. Electrical ©2000 Maytag Appliances Sales Company...

  • Page 25: Surface Elements - Ceran

    The "Hot Surface" light will come on indicating when ceran surface is 150ºF ± 50ºF. The Hi-Limit which shuts burner off at 1050ºF ± 60ºF. 16010107 Section 4. Electrical ©2000 Maytag Appliances Sales Company...

  • Page 26: Hot Surface Lights

    The light will turn off when the the area has cooled. They are located at the surface element(s) is turned off. front center of the cooktop. 16010107 Section 4. Electrical ©2000 Maytag Appliances Sales Company...

  • Page 27: Transformer, Stepdown (12V)

    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 ©2000 Maytag Appliances Sales Company...

  • Page 28: Electrical Connections/Voltage

    NOTE: For cord (pigtail) replacement, only a power supply cord kit rated at 240 volts minimum, 40 amperes, with closed loop terminals and marked for use with ranges shall be used. 16010107 Section 4. Electrical ©2000 Maytag Appliances Sales Company...
  • Page 29 NOTES 16010107 Section 4. Electrical ©2000 Maytag Appliances Sales Company...

  • Page 30: Section 5. Troubleshooting

    4: 50 M in. 10: 00 Keep Warm 170/75 If equipped. * * Toasting has a m axim um allow able tim e of 10 m inutes, available in upper oven only. 16010107 Section 5. Troubleshooting ©2000 Maytag Appliances Sales Company...

  • Page 31: Fault Codes

    In a convect mode the relay will shut off the convect fan when the door is opened. 16010107 Section 5. Troubleshooting ©2000 Maytag Appliances Sales Company...

  • Page 32: Relay Board

    Upper Double Line Break Lower Double Line Break SURFACE ELEMENT VALUES VOLTS WATTS RESISTANCE (ohms) Left Front/Right Rear 1200 46 ohms Left Rear 2200 25 ohms Right Front/Dual 750 inner/1450 outer 74 inner/38 outer 16010107 Section 5. Troubleshooting ©2000 Maytag Appliances Sales Company...

  • Page 33: Troubleshooting Guide

    "drifts" and may become hotter or cooler. differ from previous oven. NOTE: It is not recommended to adjust the temperature if only one or two recipes are in question. 16010107 Section 5. Troubleshooting ©2000 Maytag Appliances Sales Company...
  • Page 34 Press CANCEL pad and allow the oven to cool for one hour, then reset the clean cycle. If the fault code and beeps still continue, disconnect power to the appliance and call an authorized servicer. 16010107 Section 5. Troubleshooting ©2000 Maytag Appliances Sales Company...

  • Page 35: Parts List

    Overlay, Clock Gem ini White M aytag 74004544 Overlay, Clock Gem ini Black M aytag 74004543 Latch, Door Lock M otor 3RPM Upper 74004528 Latch, Door Lock M otor 3RPM Lower 74004519 16010107 Section 5. Troubleshooting ©2000 Maytag Appliances Sales Company...

  • Page 36: Fault Identifications Summary

    Every 30 seconds F1-H EEPROM Read Error Replace Control Anytime F1-L Sensor Wire Ohm sensor wire end to end Anytime at least one oven is to ensure a closed path active Continued... 16010107 Section 5. Troubleshooting ©2000 Maytag Appliances Sales Company...
  • Page 37 Check switches and wiring Every 60 seconds that the to latch control sees the door locked F9-6 Lock and Unlock Switch Lower Check switches and wiring Every 30 seconds Oven to latch assem bly 16010107 Section 5. Troubleshooting ©2000 Maytag Appliances Sales Company...

  • Page 38: Section 6. Wiring Diagrams

    SECTION 6. WIRING DIAGRAMS MER6550AA*, MER6550BA* Wiring Diagram 16010107 Section 6. Wiring Diagrams ©2000 Maytag Appliances Sales Company...
  • Page 39 MER6550AA*, MER6550BA* Schematic Diagram 16010107 Section 6. Wiring Diagrams ©2000 Maytag Appliances Sales Company...
  • Page 40 MER6550AC, MER6550BC* Wiring Diagram 16010107 Section 6. Wiring Diagrams ©2000 Maytag Appliances Sales Company...
  • Page 41 MER6550AC*, MER6550BC* Schematic Diagram 16010107 Section 6. Wiring Diagrams ©2000 Maytag Appliances Sales Company...
  • Page 42 MER6770AA*, MER6771AA*, MER6870AA*, MER6871AA*, Wiring Diagram 16010107 Section 6. Wiring Diagrams ©2000 Maytag Appliances Sales Company...
  • Page 43 MER6770AA*, MER6771AA*, MER6870AA*, MER6871AA*, Schematic Diagram 16010107 Section 6. Wiring Diagrams ©2000 Maytag Appliances Sales Company...
  • Page 44 MER6770AC*, MER6870AC* Wiring Diagram 16010107 Section 6. Wiring Diagrams ©2000 Maytag Appliances Sales Company...
  • Page 45 MER6770AC*, MER6870AC* Schematic Diagram 16010107 Section 6. Wiring Diagrams ©2000 Maytag Appliances Sales Company...
  • Page 46 MER6772BA*, MER6872BA* Wiring Diagram 16010107 Section 6. Wiring Diagrams ©2000 Maytag Appliances Sales Company...
  • Page 47 MER6772BA*, MER6872BA* Schematic Diagram 6-10 16010107 Section 6. Wiring Diagrams ©2000 Maytag Appliances Sales Company...
  • Page 48 MER6772BC*, MER6872BC* Wiring Diagram 6-11 16010107 Section 6. Wiring Diagrams ©2000 Maytag Appliances Sales Company...

  • Page 49: Mer6772Bc, Mer6872Bc Schematic Diagram

    MER6772BC*, MER6872BC* Schematic Diagram 6-12 16010107 Section 6. Wiring Diagrams ©2000 Maytag Appliances Sales Company...
  • Page 50 Maytag Appliances Sales Company Customer Service 240 Edwards Street, S.E. Cleveland, Tennessee 37311...

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