Maytag MGR6875ADB-Q-S-W, MGR6775ADB-Q-S-W User Manual

Service

This manual is to be used by qualified appliance technicians only. Maytag does not assume any responsibility for property damage or personal injury for improper service procedures done by an unqualified person.

This Base Manual covers general information

Refer to individual Technical Sheet

for information on specific models

This manual includes, but is

not limited to the following:

Freestanding Double Oven Gas Range

MGR6775ADB/Q/S/W MGR6875ADB/Q/S/W

16023415

August 2004

Important Information

Pride and workmanship go into every product to provide our customers with quality products. It is possible, however, that during its lifetime a product may require service. Products should be serviced only by a qualified service technician who is familiar with the safety procedures required in the repair and who is equipped with the proper tools, parts, testing instruments and the appropriate service information. IT IS THE TECHNICIANS RESPONSIBILITY TO

REVIEW ALL APPROPRIATE SERVICE INFORMATION BEFORE BEGINNING REPAIRS.

Important Notices for Servicers and Consumers

To avoid risk of severe personal injury or death, disconnect power before working/servicing on appliance to avoid electrical shock.

To locate an authorized servicer, please consult your telephone book or the dealer from whom you purchased this product. For further assistance, please contact:

WARNING

Customer Service Support Center

CAIR Center

Web Site Telephone Number

WWW.MAYTAG.COM ............................................. 1-800-688-9900

CAIR Center in Canada ........................................... 1-800-688-2002

Recognize Safety Symbols, Words, and Labels

DANGER!

DANGER—Immediate hazards which WILL result in severe personal injury or death.

WARNING!

WARNING—Hazards or unsafe practices which COULD result in severe personal injury or death.

CAUTION!

CAUTION—Hazards or unsafe practices which COULD result in minor personal injury, product or property

damage.

Table of Contents

Important Information .................................................... 2

Safety Information

Safety Practices for Servicer .................................... 4

Servicing .................................................................. 4

Receiving Oven ........................................................ 5

Using the Oven ........................................................ 5

Baking, Broiling, and Roasting ................................. 6

Connecting Range to Gas ........................................ 6

Electrical Requirements ........................................... 6

Extension Cord ........................................................ 6

Product Safety Devices ............................................ 6

General Information

Cooking Nomenclature ............................................. 7

Specifications .......................................................... 8

Placement of the Oven ............................................. 8

Location of Model Number ........................................ 8

Model Identification .................................................. 8

Service ..................................................................... 8

Parts and Accessories ............................................. 8

Extended Service Plan ............................................. 8

Grounding ................................................................ 9

Range Description ................................................... 10

Troubleshooting Procedures

Control System Troubleshooting ............................. 11

Component Troubleshooting .................................... 14

Component Testing Procedures ................................... 17

Quick Test Mode.....................................................22

Disassembly Procedures

Moving and/or Replacing Range ..............................24

Leveling Legs .......................................................... 24

Anti-Tip Bracket ...................................................... 24

Top Burner .............................................................. 24

Side Panel .............................................................. 24

Maintop Removal ..................................................... 24

Top Surface Valve and Spark Switch .......................24

Shut-Off Valve ......................................................... 24

Top Burner Lower Assembly ................................... 24

Manifold and Top Burner .......................................... 24

Oven Sensor ........................................................... 25

Electronic Clock......................................................25

Oven Light Replacement ......................................... 25

Oven Door(s)

Door Removal ...................................................... 25

Door Replacement ............................................... 25

Gasket and Door Disassembly ............................ 26

Lower Latch Assembly ............................................ 27

Upper Latch Assembly ............................................ 27

Oven Door Hinge ..................................................... 28

Regulator ................................................................ 28

Gas Valve ............................................................... 28

Door Plunger ........................................................... 28

Spark Module .......................................................... 28

Convection Assembly ..............................................28

Oven Racks ............................................................ 29

Rack Positions .......................................................29

Oven Cavity Components (Gas) .............................. 29

Appendix A

Installation Instructions ......................................... A-2

Appendix B

Use and Care Model MGR6775AD* ...................... B-2

Use and Care Model MGR6875AD* .................... B-12

Care and Cleaning ............................................... B-23

Appendix C

LP Conversion ....................................................... C-2

Important Safety Information

Recognize this symbol as a safety precaution.

WARNING

If the information in this manual is not followed exactly, a fire or explosion may result causing property damage, personal injury or death.

Do not store or use gasoline or other flammable vapors or liquids in the vicinity of this or any other appliance.

WHAT TO DO IF YOU SMELL GAS

• Extinguish any open flame.

• Do not try to light any appliance.

• Do not touch any electrical switch; do not use any phone in your building.

• Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.

• If you cannot reach your gas supplier, call the fire department.

Installation and service must be performed by an authorized installer, service agency or gas supplier.

WARNING!

Due to the nature of cooking, fires can occur as a result of overcooking or excessive grease. Although a fire is unlikely, if one occurs proceed as follows:

Oven Fires

1. Do not open the oven door.

2. Turn all controls to the OFF position.

3. As an added precaution turn off the electricity at the main circuit breaker or fuse box and the gas at the main supply valve.

4. Allow the food or grease to burn itself out in the oven.

If smoke or fire persist call the local fire department.

To avoid risk of property damage or personal injury do not obstruct the flow of combustion or ventilation air to the oven.

To avoid risk of electrical shock, serious personal injury or death: Verify the oven has been properly grounded and always disconnect the electrical supply before servicing this unit.

WARNING

To avoid risk of electrical shock, property damage, personal injury or death; verify wiring is correct, if components were replaced. Verify proper and complete operation of unit after servicing.

This gas appliance contains or produces a chemical or chemicals which are known to the state of California to cause cancer, birth defects or other reproductive harm. To reduce the risk from substances in the fuel or from fuel combustion make sure this appliance is installed, operated, and maintained according to the instructions in this manual.

NOTE: The maximum gas supply pressure for these

models must not exceed 14 inches W.C.P.

Safety Practices for Servicer

Safe and satisfactory operation of gas ranges depends upon its design and proper installation. However, there is one more area of safety to be considered:

Servicing

Listed below are some general precautions and safety practices which should be followed in order to protect the service technician and consumer during service and after service has been completed.

1. Gas smell—Extinguish any and all open flames and open windows.

2. Turn gas off—Service range with gas turned off unless testing requires it.

3. Checking for gas leaks—Never check for leaks with any kind of open flame. Soap and water solution should be used for this purpose. Apply solution to suspected area and watch for air bubbles which indicates a leak. Correct leaks by tightening fittings, screws, connections, applying approved compound, or installing new parts.

Important Safety Information

4. Using lights—Use a hand flashlight when servicing ranges or checking for gas leaks. Electric switches should not be operated where leaks are suspected. This will avoid creating arcing or sparks which could ignite the gas. If electric lights are already turned on, they should not be turned off.

5. Do not smoke—Never smoke while servicing gas ranges, especially when working on piping that contains or has contained gas.

6. Check range when service is completed—After servicing, make visual checks on electrical connection, and check for gas leaks. Inform consumer of the condition of range before leaving.

7. Adhere to all local regulations and codes when

performing service.

Receiving Oven

• Installer needs to show consumer location of the range

gas shut-off valve and how to shut it off.

• Authorized servicer must install the range, in

accordance with the Installation Instructions. Adjustments and service should be performed only by authorized servicer.

• Plug range into a 120–volt grounded outlet only. Do

not remove round grounding prong from the plug. If in doubt about grounding of the home electrical system, it is consumers responsibility and obligation to have an ungrounded outlet replaced with a properly grounded three-prong outlet in accordance with the National Electrical Code. Do not use an extension cord with this appliance.

• Insure all packing materials are removed from the

range before operating it, to prevent fire or smoke damage should the packing material ignite.

• Ensure range is correctly adjusted by a qualified

service technician or installer for the type of gas (Natural or LP). Some ranges can be converted for use with Natural or LP gas.

• With prolonged use of a range, high floor

temperatures could result. Many floor coverings will not be able to withstand this kind of use. Never install range over vinyl tile or linoleum that cannot withstand high temperatures. Never install range directly over carpeting.

Using the Oven

• Do not leave children alone or unattended where a

range is hot or in operation. They could be seriously burned.

• Do not allow anyone to climb, stand or hang on the

door. They could damage the range and cause severe personal injury.

• Wear proper apparel. Loose fitting or hanging garments

should never be worn when using oven. Flammable material could ignite if brought in contact with flame or hot oven surfaces which may cause severe burns.

• Never use range for warming or heating a room. This may cause burns, injuries, or a fire.

• Do not use water on grease fires.

• Do not let grease or other flammable materials collect in or around range.

• Do not repair or replace any part of range unless it is recommended in this manual.

• Use only dry potholders. Moist or damp potholders used on hot surfaces may result in a burn from steam. Do not let a potholder touch the flame. Do not use a towel or a bulky cloth as a potholder.

• Never leave range unattended while cooking. Boilovers can cause smoking and may ignite.

• Only certain types of glass/ceramic, earthenware, or other glazed utensils are suitable for oven use. Unsuitable utensils may break due to sudden temperature change.

• Use care when opening oven door. Let hot air or steam escape before removing or replacing food.

• Do not heat unopened food containers in oven. Buildup of pressure may cause a container to burst and result in injury.

• Keep range vent ducts unobstructed.

• Place oven racks in desired location while oven is cool. If a rack must be moved while oven is hot, use a dry potholder.

• Do not use aluminum foil to line oven bottom or racks. Aluminum foil can cause a fire and will seriously affect baking results, and damage to porcelain surfaces.

• Do not touch interior surfaces of oven during or immediately after use. Do not let clothing or other flammable materials come in contact with bake or broil burners.

• Other areas of the oven can become hot enough to cause burns, such as vent openings, window, oven door and oven racks.

• To avoid steam burns, do not use a wet sponge or cloth to wipe up spills on hot cooking area.

• Do not store combustible or flammable materials, such as gasoline or other flammable vapors and liquids near or in oven.

• Do not clean oven door gasket located on back of the door. Gasket is necessary to seal the oven and can be damaged as a result of rubbing or being moved.

• Do not drape towels or any materials on oven door handles. These items may ignite causing a fire.

CAUTI ON

Do not store items of interest to children in cabinets above range. Children may climb on oven to reach these items and become seriously injured.

Important Safety Information

Baking, Broiling, and Roasting

• Do not use oven area for storage.

• Stand back from range when opening door of a hot oven. Hot air or steam can cause burns to hands, face, and eyes.

• Do not use aluminum foil anywhere in the oven. This could result in a fire hazard and damage the range.

• Use only glass cookware appropriate for use in gas ovens.

• Always remove broiler pan from oven when finished broiling. Grease left in pan can catch fire if oven is used without removing grease from the broiler pan.

• Meat that is close to the flame may ignite when broiling. Trim any excess fat to help prevent excessive flare-ups.

• Make sure broiler pan is placed correctly to reduce any possibility of grease fires.

• Should a grease fire occur in the broiler pan, turn off oven, and keep oven door closed until fire burns out.

Connecting Range to Gas

Install manual shut-off valve in gas line for easy accessibility outside range. Be aware of the location of the shut-off valve.

Electrical Requirements

120-volt, 60 Hertz, 15 amp, individual circuit which is properly grounded, polarized and protected by a circuit breaker or fuse.

Extension Cord

Due to possible pinching during installation, extension cords should not be used on products.

Extension cords will adversely affect the performance of spark system.

Gas Burner Orifices Universal orifices are

used on most valves. They must be adjusted or set for the type of gas being used Natural

LP.

After servicing a valve or orifice verify it is adjusted properly before completing service.

Oven Safety Valve Oven valve is designed

to be a safety valve. Two basic designs are used in gas ranges.

Hydraulic type valve Electric type valve

Both types are safety valves because they are indirectly operated by the oven thermostat, which controls a pilot flame or electric ignitor, to open and close the oven valve.

Grounded Oven Frame Ground prong on power

cord is connected to the frame, usually a green lead fastened by a screw. In addition, any part or component capable of conducting an electric current is grounded by its mounting.

Product Safety Devices

Safety devices and features have been engineered into the product to protect consumer and servicer. Safety devices must never be removed, bypassed, or altered in such a manner as to defeat the purpose for which they were intended.

Listed below are various safety devices together with the reason each device is incorporated in the gas ranges.

Pressure Regulator Maintains proper and

steady gas pressure for operation of oven controls. Regulator must be set for the type of gas being used Natural or LP. After servicing regulator, make certain it is set properly before completing service.

If any ground wire, screw, strap, nut, etc. is removed for service, or any reason, it must be reconnected to its original position with original fastener before the appliance is put into operation again.

Failure to do so can create a possible shock hazard.

General Information

This manual provides basic instructions and suggestions for handling, installing and servicing gas ranges.

The directions, information, and warnings in this manual are developed from experience with, and careful testing of the product. If the unit is installed according to this manual, it will operate properly and will require minimal servicing. A unit in proper operating order ensures the consumer all the benefits provided by clean, modern gas cooking.

Cooking Nomenclature

M E R 6 8 7 5 A A W

Brand

A Amana C Magic Chef G Graffer &

Sattler

H Hardwick

J Jenn-Air M Maytag N Norge U Universal

Y Crosley

This manual contains information needed by authorized service technicians to install and service gas ranges. There may be, however, some parts which need further explanation. Refer to the Installation Instructions, Use and Care, Technical Sheets or the toll-free technical support line.

Color

A Almond on Almond B Black C Brushed Chrome H Traditional White L Traditional Almond P Prostyle Q Monochromatic Bisque S Stainless T Traditional Bisque W White on White F Frost White (True Color White) N Natural Bisque (True Color Bisque)

Fuel

B Butane D Dual Fuel

E/J Electric

G Gas, Natural

L Liquid Propane M Microwave P Standing Pilot X No Fuel

W Warming Drawer

Product Type

A Accessory/Cartridge C Cooktop Updraft/Countertop D Downdraft Cooktop or Warming Drawer E Eyelevel Range G Grill L Range (20")

M Range (36")

P Drop In (24") Q Wall Oven (27") R Range, Free-Standing (30") S Slide-In (30") T Range Hood V OTR

W Wall Oven

Y RV Range Z RV Top

Listing

A UL/AGA C CSA/CGA/CUL D Dual Listed G 220-240 V / 50-60 Hz

M Military Model

P PSB Approved

(Singapore)

X Export 120 V / 60 Hz

Production Code

This identifies the production version.

Feature Content

1000-3999 Brands 4000-6999 Maytag/Amana 7000-9999 Jenn Air

General Information

Specifications

Refer to individual Technical Sheet for specification information.

Placement of the Oven

This freestanding range must be placed in the kitchen or comparable room. All safety guidelines must be followed (see Chapter 2) and free air flow around the range is essential.

Do Not Block Air Vents

All air vents must be kept clear during cooking. If air vents are covered during operation, the oven may overheat. If this occurs, a sensitive, thermal safety device automatically removes power to the oven, rendering the oven inoperable. The oven will remain in this state until it has sufficiently cooled.

Location of Model Number

To request service information or replacement parts, the service center will require the complete model, serial, and manufacturing number of your freestanding range. The number can be found on a metal tag located on the back of the control panel. Reach behind the top left corner of the control panel and rotate the tags up to view the data.

Service

Keep a copy of sales receipt for future reference or in case warranty service is required. To locate an authorized servicer:

• For Maytag product call 1-800-462-9824 or visit the Web Site at www.maytag.com

• For product in Canada call 1-866-587-2002 or visit the Web Site at www.maytag.com

Warranty service must be performed by an authorized servicer. We also recommend contacting an authorized servicer, if service is required after warranty expires.

Parts and Accessories

Purchase replacement parts and accessories over the phone. To order accessories for your product call:

• For Maytag product call 1-800-688-9900 or visit the Web Site at www.maytag.com

• For product in Canada call 1-866-587-2002 or visit the Web Sites at www.maytag.com

Extended Service Plan

We offer long-term service protection for this new oven.

• Dependability PlusSM Extended Service Plan is specially designed to supplement Maytag’s warranty. This plan covers parts, labor, and travel charges. Call 1-800-925-2020 for information.

Location of Model and Serial N umb er

Model Identification

Complete enclosed registration card and promptly return. If registration card is missing:

• For Maytag product call 1-800-688-9900 or visit the Web Site at www.maytag.com

• For product in Canada call 1-866-587-2002 or visit the Web Site at www.maytag.com

When contacting provide product information located on rating plate. Record the following: Model Number: ___________________ Manufacturing Number: ___________________ Serial or S/N Number: ___________________ Date of purchase: ___________________ Dealer’s name and address: ___________________

General Information

Grounding

NOTE: This appliance must be properly grounded, for

personal safety.

Power cord on this appliance is equipped with a threeprong grounding plug. This matches standard three-prong grounding wall receptacle to prevent possibility of electric shock from this appliance. Consumer should have wall receptacle and circuit checked by qualified electrician to verify receptacle is properly grounded.

WARNING

Attaching adapter ground terminal to wall receptacle cover screw does not ground appliance unless the cover screw is metal and not insulated, and wall receptacle is grounded through the house wiring. Consumer should have circuit checked by a qualified electrician to verify receptacle is properly grounded.

When disconnecting power cord from adapter, always hold adapter with one hand. If this is not done, adapter ground terminal is very likely to break with repeated use. Should this happen, DO NOT USE appliance until a proper ground has been established.

Neutral Wire

Ground

Hot Line

It is the consumers responsibility to replace standard twoprong wall receptacles with properly grounded three-prong wall receptacles.

DO NOT, UNDER ANY CIRCUMSTANCES, CUT OR REMOVE THE THIRD (GROUND) PRONG FROM POWER CORD.

For 15 amp circuits only, do not use an adapter on 20 amp circuit. Where local codes permit, a TEMPORARY CONNECTION may be made to a properly grounded twoprong wall receptacle by the use of a UL listed adapter (available at most hardware stores). Larger slot on adapter must be aligned with larger slot in the wall receptacle to provide proper polarity.

NOTE: Circuit tester can be used to verify voltage at

outlet. Connect one lead to hot line and the other lead to ground. Circuit tester should light.

Range Description

Backguard

Data Plate

Surface Burners

Electronic Oven Control

Oven Vent

Surface Controls

Broiler

Bake Burner

Anti-Tip Bracket

Leveling Leg

Oven Rack

Oven Window

Broiler

Bake Burner

Oven Racks

Door Gasket

Troubleshooting Procedures

To avoid risk of electrical shock, personal injury or death; disconnect power and gas to oven before servicing, unless testing requires power and/or gas.

• Verify proper grounding before checking for trouble.

• Be careful of the high voltage circuit.

• Discharge the high voltage capacitor.

• When checking the continuity of the switches or of the high voltage transformer, disconnect one lead wire from these parts and then check continuity with the AC plug removed. To do otherwise may result in a false reading or damage to your meter.

• Do not touch any part of the circuit on the printed circuit board, since static electric discharge may damage the control panel. Always touch yourself to ground while working on this panel to discharge any static charge built up on your body.

WARNING

CAUTION

Control Systems Troubleshooting

Description of Error Codes

The Diagnostic Code Display Mode allows viewing of the error diagnostic codes. Each error code consists of four digits. The following table describes the function of each digit.

Digit Description

Primary System: 1 – Local to the control circuit board

1st

2nd

3rd Secondary System: Sequential numbering

4th

3 – Sensor or meat probe 4 – Control input 9 – Door lock Measurable: d – Diagnostic: measurable parameter c – Control related, replace control

Oven Cavity: 1 – Upper oven (or single cavity oven) 2 – Lower oven c – Control specific

Diagnostic Code Display Mode may be activated by pressing and holding the power-up. Diagnostic Code Display Mode may be entered only when applying power to the control.

AUTOSET

pad for 3 seconds at

Troubleshooting Procedures

WARNING

To avoid risk of electrical shock, personal injury or death; disconnect power and gas to oven before servicing, unless testing requires power and/or gas.

Diagnostic Code Checking

Code Description When Checked Detection

1c1c Shorted key Always 1 minute

1c2c Keyboard tail disconnected Always 1 minute 1c31 Cancel key circuit problem Always 20 seconds 1c32 Cancel key circuit problem Always 20 seconds

1c6c EEPROM error When accessing EEPROM 3 tries

1c7c Control not calibrated Always 3 tries

1c8c Cooking program error Cook or clean programmed 3 tries 1d11

1d12 1d21 1d22

Runaway temp (650°F), door unlocked Runaway temp (650°F), door unlocked Runaway temp (950°F), door locked Runaway temp (950°F), door locked

Latch unlocked 1 minute Latch unlocked 1 minute

Latch locked 1 minute Latch locked 1 minute

3d11 Sensor open Cook or clean active 20 seconds 3d12 Sensor open Cook or clean active 20 seconds 3d21 Sensor shorted Cook or clean active 20 seconds 3d22 Sensor shorted Cook or clean active 20 seconds 4d11 Door switch position failure Clean or keyboard Lockout active 1 minute 4d12 Door switch position failure Clean or keyboard Lockout active 1 minute 4d21 No reverse airflow fan rotation (no/low RPM) Clean or Cook programmed 1 minute 4d31 Reverse airflow fan state (on when should be off) Suppose to be OFF 1 minute 4d51 Door switch circuit failure Convect, Clean or Keyboard Lockout programmed 1 minute 4d52 Door switch circuit failure Convect, Clean or Keyboard Lockout programmed 1 minute 9d11 Latch will not lock Latch should be locked 9d12 Latch will not lock Latch should be locked 9d21 Latch will not unlock Latch should be unlocked 9d22 Latch will not unlock Latch should be unlocked 9d31 Latch state unknown, both locked and unlocked Latch should be locked or when lock attempted 9d32 Latch state unknown, both locked and unlocked Latch should be locked or when lock attempted

See Note See Note See Note See Note See Note See Note

Diagnostic Code Handling

Code Measurable What is Displayed Action Taken By Control

1c1c Keypress Nothing

1c2c Keyboard loop improper value Nothing

1c31

1c32

1c6c No response from EEPROM Nothing

1c7c Calibration value out of range “CAL” in the time digits

1c8c CRC invalid Nothing Cancels active cook function

1d11

1d12

1d21

1d22

3d11

3d12

3d21

3d22

4d11 Door switch not closed when door is locked

4d12 Door switch not closed when door is locked

4d21 No reverse airflow fan rotation (no/low RPM) Nothing Disables all cook function for cavity

4d31 Reverse airflow fan state (on when should be off) Nothing No action

4d51 Door switch not open or closed Nothing

4d52 Door switch not open or closed Nothing

9d11 Lock switch not closed

9d12 Lock switch not closed

9d21 Unlock switch not closed

9d22 Unlock switch not closed

9d31 Latch both locked and unlocked

9d32 Latch both locked and unlocked

Cancel key improper value Cancel key improper value

Sensor resistance > 2237

Sensor resistance > 2787

Sensor resistance > Infinite

Sensor resistance > 0

Ω Ω

Ω Ω Ω Ω

Ω Ω

BAKE flashes 3 Disables all outputs for cavity 1 BAKE flashes 3 Disables all outputs for cavity 1

BAKE flashes

Nothing Disables Clean and Lockout functions Nothing Disables Clean and Lockout functions

LOCK flashes LOCK flashes LOCK flashes LOCK flashes LOCK flashes LOCK flashes

Disables audible for affected key depression Disables all outputs Disables lights and timers Disables audible for key depression Disables all outputs 1 Disables lights and timers

Disables all outputs Completely disables oven

Disables all cook function for cavity

Disables Convect, Clean, and Lockout functions Turn off light and disable light from door switch Disables Convect, Clean, and Lockout functions Turn off light and disable light from door switch

Disables Clean and Lockout functions 4

1, 2

4, 5

Troubleshooting Procedures

WARNING

To avoid risk of electrical shock, personal injury or death; disconnect power and gas to oven before servicing, unless testing requires power and/or gas.

NOTES:

“Action Taken” applies as long as the condition exists. If the condition goes away, the control recovers.

If there is a cook function or timer active, the function continues. The user cannot edit the function, and [Cancel] will cancel the cook

mode.

Flash rate: 0.2 seconds on, 0.1 second off. Pressing any key will clear the display until the fault clears and is re-triggered.

“Action Taken” applies until there is a POR (Power On Reset [“hard reset”]).

If the control believes the door is locked, it will attempt to unlock it when the function cancels and the cavity temperature cools.

Special conditions for latch faults (9dxx):

• A known good unlock position is defined as when the unlock switch reads closed and lock switch reads open.

• A known good lock position is defined as when the unlock switch reads open and lock switch reads closed.

• A faulted switch means the switch input is reading an invalid state, neither open nor closed.

• Once a latch fault occurs, latch movement is disabled until there is a POR. An error tone will sound if a function requiring a

faulted latch is attempted.

• If at POR, the latch is not at a known good unlock position:

• If the latch is at a good lock position, it will attempt to unlock when the RTD (Resistance Temperature Device)

temperature is below 400°F.

• If the latch is not at a good lock position, the control will fault.

• If a latch fault occurs while the RTD is above the lock temperature, the latch will not try to move, but the fault is still logged

to EEPROM after the first stage of detection.

• The Display column for latch faults applies 1) If the latch was moving when the fault occurred; 2) If the latch is already in a known locked state when the fault occurs.

• LOCK flashes after a fault is detected and until the unlocked position is achieved. The unlock position may be identified by a successful unlock switch closure, or as the result of timing when the unlock switch is not functioning properly.

• If the last known good position was unlock (e.g. baking, or idle) and a latch fault occurs, the motor is never moved. The fault is logged to EEPROM and is not seen by the user.

• Latch fault detection is in two stages. The first stage is to allow the control to recover without moving the latch. After this:

• If the latch was previously at a known good unlock position, the latch will not move and the control will fault.

• If the control was previously in a known good lock position:

• If the RTD is below 400°F, the latch will attempt to recover to it’s proper position (up to three

revolutions). If it cannot, the control will fault and the latch will move to a calculated unlock position.

• If the RTD is at or above 400°F, the control will fault. When the RTD cools to below 400°F, the control will attempt to recover to a good unlock position (up to three revolution). If it cannot, the control will fault and the latch will move to a calculated unlock position.

• Note: If the unlock position cannot be found, this may result in a second fault, the first fault occurring when the latch request was locked, and the second when the latch request is unlocked.

• If the latch is moving when the fault occurs, the control will bypass the first stage of detection and immediately try to find it’s proper position. If it cannot, the control will fault and the latch will move to a calculated unlock position.

• Affected DLBs (Double Line Breaks) and loads are disabled during detection.

• If the control is in a known good unlock position and the lock switch becomes faulted:

• The control will not fault.

• If a function requiring latch movement is attempted while the lock switch is faulted, the control will sound an error

tone and the function will be disabled.

• If the control is in a known good lock position and the unlock switch becomes faulted:

• The control will not fault.

• After the function is canceled and unlock is attempted, the control will attempt to unlock the latch according to

the procedures in these notes.

Troubleshooting Procedures

To avoid risk of electrical shock, personal injury or death; disconnect power and gas to oven before servicing, unless testing requires power and/or gas.

WARNING

Component Troubleshooting

Problem Possible Cause Correction

Burners will not ignite; no

spark at top burner.

Burner will not ignite. No

spark to burner ignitors when

burner knob is rotated to

“LITE” position.

No spark or only random

spark at one ignitor.

Unit continues to spark after

knob is turned to OFF

position.

No oven operation in bake or

broil.

Poor ground on burner cap..........................

Weak or failed spark module.......................

Low gas pressure ........................................

No 120 VAC to range ..................................

Micro switch contacts not closing ................

Faulty wiring. Bad connection at burner

electrode and electrode socket ...................

Inoperative spark module ............................

Electrode dirty. Burner cap dirty ..................

Cracked or broken electrode, electrode

wire or electrode socket...............................

Check for cracked ignitor or pinched ignitor

wire .............................................................

Poor continuity to burner cap.......................

Bad ground connection or lack of continuity

to ground or ignitor ......................................

Cracked or broken ignitor extension lead....

Shorted valve switch/harness......................

Switch has slipped off the valve ..................

No voltage to control....................................

No voltage from control ...............................

Loose wire connection or broken wire .........

• Clean burner cap.

• Replace spark module.

• Verify pressure 4” WCP for

natural, 10” WCP for LP.

• Verify voltage at wall outlet.

• Check wiring against appropriate

wiring diagram. Verify all terminals and connections are correct and tight. Check micro switch contacts.

• Check wiring against appropriate wiring diagram. Verify all terminals and connections are correct and tight.

• Check module according to testing procedures information.

• Clean electrode or burner cap.

• Replace electrode.

• Replace ignitor lead or electrode.

• Clean burner cap and lead.

• Tighten ground connection and

correct any breaks in ground path from ignitor path to unit ground path.

• Replace ignitor lead.

• Replace switch/harness. If

shorting is caused by excessive spillovers, customer education is advised.

• Carefully reposition switch on valve and rotate from OFF to high, several times to verify switch is not broken.

• Check for 120 VAC at control. If no voltage check power source.

• Check 120 VAC to ignitor, if no voltage, replace control.

• Verify all connections are clean and tight, replace broken wire.

Troubleshooting Procedures

To avoid risk of electrical shock, personal injury or death; disconnect power and gas to oven before servicing, unless testing requires power and/or gas.

Problem Possible Cause Correction

Failed ignitor. ...............................................

Gas pressure too high .................................

No gas flows to burner.

Ignitor glows red.

Gas flows to bake/broil

burner, but burner does not

light.

Broil burner shuts off shortly

after the start of self-clean

operation. Bake and broil

functions operate normally.

Fan motor does not operate.

Failed gas valve...........................................

Loose wire connection or broken wire .........

Ignitor positioned too far from burner ..........

Dirt or grease in orifice or burner.................

Insufficient gas pressure .............................

Power outage ..............................................

Control Error................................................

No power to fan motor.................................

Failed fan motor or winding/frozen shaft .....

WARNING

• Check ignitor current draw, 3.2 –

3.6 Amps. Replace ignitor, if it fails test.

• Check for correct gas pressure. Natural gas pressure should be 4" WCP and LP gas pressure should be 10" WCP.

• Check gas valve for continuity.

• Verify all connections are clean

and tight, replace broken wire.

• Reposition ignitor closer to bake/broil burner.

• Clean orifice or burner.

• Check for correct gas pressure.

Natural gas pressure should be 5" WCP and LP gas pressure should be 10" WCP.

• Verify power is present at unit. Verify that the circuit breaker is not tripped.

• Replace household fuse, but do not fuse capacity.

• Verify power is present at unit. Verify that the circuit breaker is not tripped.

• Replace household fuse, but do not fuse capacity.

• See “Control Systems Troubleshooting.”

• Check for 120 VAC supplied at fan motor. If no voltage is present, check for broken or loose wiring between fan motor and relay board. If voltage is present at fan motor, go to the next step.

• Check motor winding for continuity. Check for a frozen motor shaft. Check for broken wiring between motor and neutral terminal block.

Troubleshooting Procedures

To avoid risk of electrical shock, personal injury or death; disconnect power and gas to oven before servicing, unless testing requires power and/or gas.

Problem Possible Cause Correction

Failed oven lamp ....................................

Failed wiring............................................

Oven light does not operate.

Self-clean cycle not working

Oven door will not unlock

Oven smokes/odor first few

times of usage

Failure Codes

Part or all of the appliance

does not work

Failed light socket...................................

Failed light plunger/switch ......................

Programming error .................................

Oven is self-cleaning ..............................

Oven is still hot .......................................

Normal ....................................................

Electronically Controlled .........................

Power Outage.........................................

Improperly set oven controls ..................

Oven door locked ...................................

Delayed cooking/cleaning.......................

WARNING

• Check lamp and replace is necessary.

• Check for broken, loose or dirty

connections.

• Check light socket for continuity.

• Check plunger/switch for continuity.

Check wiring diagram for application.

• Shut off power to oven for five minutes by switching off circuit breaker. Reset circuit breaker and try oven again.

• Allow cycle to complete.

• Door will not unlock until unit has

cooled to safe temperature. Do not force door open, this will void warranty. Blow cool air on door latch area to quicken process.

• Minor smoking and/or odor is normal the first few times of oven usage.

• Ventilate area well and perform selfclean cycle.

• See Testing Procedures for diagnostic checks.

• Check power supply/circuit breaker

• Verify oven controls are properly set

• Verify oven door is unlocked after a

self-clean cycle

• Verify oven is not set for delayed cooking or cleaning program

Testing Procedures

WARNING

To avoid risk of electrical shock, personal injury or death; disconnect power and gas to oven before servicing, unless testing requires power and/or gas.

Component Testing

Illustration Component Test Procedure Results

5 K btu

9.2 K btu 16 K btu 12 K btu (Model MGR6875AD*)

5 K btu

9.2 K btu 16 K btu 12 K btu (Model MGR6875AD*)

Oven light housing Disconnect connector and test

resistance of terminals.........................

Measure voltage at oven light: .............

Door plunger switch Remove switch from unit and measure

the following points:

C NO ................................................

Autolatch assembly with switch

Disconnect wires and test for continuity per wiring diagram.

Refer to Parts Manual for correct autolatch switch associated with the correct manufacturing number.

270° valve

Verify gas is supplied.

Adjust set screw for simmer control.

Spark 270° switch

Test for voltage at terminals.................

Disconnect wiring and check for

Spark ignition electrode

continuity in LITE position....................

Test for resistance of spark lead..........

Test ignitor to chassis ..........................

Top surface burner

Verify gas is supplied ...........................

Verify burner cap is positioned correctly.

Spark module 4 + 0 Test for voltage at terminals L and N ...

B1N

Check polarity and ground ...................

Temperature sensor Measure resistances............................

Bake burner Verify gas is supplied.

Orifice adjusted for Natural or LP.........

Check for obstructions or

contamination in ports..........................

Broil burner Verify gas is supplied.

Orifice adjusted for Natural or LP.........

Check for obstructions or

contamination in ports..........................

Ignitor Test for voltage at terminals.................

Test for the amount of amperage in the

circuit ...................................................

(Ignitor may glow but not have sufficient amperage to open valve).

Verify bulb is properly installed. Indicates continuity with bulb installed.

120 VAC, refer to wiring diagram for terminal identification. If no voltage is present at light, check wiring/switches.

Plunger in continuity, Plunger out infinite.

See wiring diagram for schematic layout. Access assembly by removing left side panel.

120 VAC

Continuity in LITE position. Continuity

No continuity from ignitor to chassis.

Check for obstructions in burner ports.

120 VAC

See wiring diagram

Approximately 1100 Ω at room temperature 75°F. Set for Natural Gas from the factory

Adjust as necessary.

Replace if punctured or torn. Set for Natural Gas from the factory

Adjust as necessary.

Replace if punctured or torn. 120 VAC

3.2 − 3.6 Amps If not replace.

Testing Procedures

WARNING

To avoid risk of electrical shock, personal injury or death; disconnect power and gas to oven before servicing, unless testing requires power and/or gas.

Illustration Component Test Procedure Results

Model MGR6875AD*

Power cord 3-wire Verify resistance of wires to

Triple thermal valve Disconnect wiring to valve.

Pressure regulator Verify gas pressure (W.C.P.).

Shut off valve Check to verify gas supply is turned

Convection Assembly Convection Element Convection Motor

Measure resistance on upper and

lower bake circuit.................................

Measure resistance on broil circuit......

If on LP service verify proper gas supply conversion.

on. Located on surface valve manifold near maintop upsweep.

Measure voltage..................................

Remove wires, check resistance.........

Check motor windings to ground .........

terminals.

Continuity, If not replace. Continuity, If not replace.

WAR NI NG

Do not attempt to open valve with 120 VAC.

5" Natural 10" LP/propane

Gas ON .... slot at 9 o’clock position

Gas OFF... slot at 12 o’clock position

120 VAC. Approximately 28 to 33 Ω. No continuity. Approx. 900 RPM.

Continuity

Testing Procedures

WARNING

To avoid risk of electrical shock, personal injury or death; disconnect power and gas to oven before servicing, unless testing requires power and/or gas.

Illustration/Component Test Procedure Results

Control Panel Assembly

Model MGR6875AD*

Continuity is indicated as follows:

1000 – 6600 Ω for Cancel pad 1000 – 10000 Ω for All other pads

Pad 1 2 3 4 5 6 7 8 9 0 Lower Cancel Upper Cancel Conv Bake Delay Clock Favorite Lower Clean Upper Clean Lower Bake Lower Light Upper Keep Warm Upper Light Autoset Lower Keep Warm Conv Roast Upper Bake Timer 2 Cook & Hold Upper Broil Timer 1

Trace

14 & 16 17 & 16 16 & 8 7 & 6 8 & 17 7 & 14 6 & 15 5 & 14 6 & 14 8 & 14 1 & 2 11 & 12 4 & 15 5 & 6 5 & 16 5 & 7 5 & 15 7 & 16 8 & 15 7 & 15 7 & 17 15 & 16 14 & 17 8 & 16 5 & 4 4 & 14 4 & 7 6 & 16 14 & 15 4 & 16

Measurement

Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity Continuity

Model MGR6775AD* Membrane and Overlay

Testing Procedures

WARNING

To avoid risk of electrical shock, personal injury or death; disconnect power and gas to oven before servicing, unless testing requires power and/or gas.

H2 Control Testing (Model MGR6875AA*)

H2 Controlled

Model MGR6875AD*

H2 Controlled

Model MGR6875AD*

H2 Controlled

Model MGR6875AD*

H2 Controlled

Model MGR6875AD*

H2 Controlled

Model MGR6875AD*

H2 Controlled

Model MGR6875AD*

H2 Controlled

Model MGR6875AD*

H2 Controlled

Model MGR6875AD*

H2 Controlled

Model MGR6875AD*

H2 Controlled

Model MGR6875AD*

H2 Controlled

Model MGR6875AD*

Oven temperature adjustment (Upper Oven)

Oven temperature adjustment (Lower Oven)

Temperature display

Clock Display

24 Hour Clock

Factory Default

Twelve hour off Control will automatically cancel any

Sabbath Mode

Beeper Volume

Child lock out

Diagnostic Code Display

Press

Upper Bake

Enter

550

Immediately press and hold pad for 3 seconds. Adjust oven from -35° to +35° (-37.2° to + 1.6° C) in 5° F (2.7° C) increments by pressing adjusting the oven, move temperature 5° F (2.7° C) each time. W ait 4 seconds for the data entry timer to expire to accept the change. Temperature adjustment is retained even through a power failure. Press Enter Immediately press and hold pad for 3 seconds. Adjust oven from -35° to +35° (-37.2° to + 1.6° C) in 5° F (2.7° C) increments by pressing adjusting the oven, move temperature 5° F (2.7° C) each time. W ait 4 seconds for the data entry timer to expire to accept the change. Temperature adjustment is retained even through a power failure. Press and hold

Upper Bake

Press and hold

Clock

Press and hold

Favorite

Press and hold

Upper Keep Warm

cooking operation and remove all relay drives 12 hours after the last pad touch. Hold activate Sabbath mode.

Hold disable Sabbath mode.

Hold 3 seconds to adjust beeper loudness. Press and hold

& Hold

display where the temperature normally appears. “LOCK” will display flashing while door is locking. To reactivate the control, press and hold

Cancel

Press and hold

Autoset

See “Quick Test Mode.” Cycle through the codes using the number pads 1 through 5.

on the digit-pad.

Autoset

Lower Bake

550

on the digit-pad.

Autoset

pads for 3 seconds.

Clock

pad for 3 to 5 seconds to

Clock

pad for 3 to 5 seconds to

Upper Cancel

pads for 3 seconds. “OFF” will

and

pads for 3 seconds.

pad.

Upper Bake

pad. To avoid over

pad.

Lower Bake

pad. To avoid over

Upper Cancel

pads for 3 seconds.

Upper Cancel

pads for 3 seconds.

and

Upper Cancel

Cook & Hold

Upper Cancel

and

Delay

and

for 3 seconds.

and

pads for

Cook

While increasing or decreasing oven temperature, this does not affect selfcleaning temperature.

This mode enables the user to indicate °F or °C on the display. Allows clock to be toggled On or OFF.

Allows the time on the clock to be toggled from 12 hour or 24 hour display. Allows the clock to be reset to factory settings. See Sabbath mode to disable.

“SAbbAth” will display for 5 seconds, then change to “SAb” (displayed in Temp area). All pad inputs are disabled except for CANCEL and CLOCK pads. This mode disables the normal 12 hour shutoff to allow operation of the bake mode for a maximum of 72 hours. Volume settings are Low, Medium and High. This is a safety feature that can be used to prevent children from accidentally programming the oven. It disables the electronic oven control.

Child lockout features must be reset after a power failure.

The last 5 diagnostic codes will be stored in the non-volatile memory.

See “Description of Error Codes” for explanation.

Testing Procedures

WARNING

To avoid risk of electrical shock, personal injury or death; disconnect power and gas to oven before servicing, unless testing requires power and/or gas.

H3 Control Testing (Model MGR6775AA*)

H3 Controlled

Model MGR6775AD*

H3 Controlled

Model MGR6775AD*

H3 Controlled

Model MGR6775AD*

H3 Controlled

Model MGR6775AD*

H3 Controlled

Model MGR6775AD*

H3 Controlled

Model MGR6775AD*

H3 Controlled

Model MGR6775AD*

H3 Controlled

Model MGR6775AD*

H3 Controlled

Model MGR6775AD*

H3 Controlled

Model MGR6775AD*

H3 Controlled

Model MGR6775AD*

H3 Controlled

Model MGR6775AD*

Oven temperature adjustment (Upper Oven)

Oven temperature adjustment (Lower Oven)

Temperature display

Factory Default

Clock Display

24 Hour Clock

Demo

Twelve hour off Control will automatically cancel any

Sabbath Mode

Beeper Volume

Child lock out

Diagnostic Code Display

Press

Upper Bake

Enter

550

Immediately press and hold pad for 3 seconds. Adjust oven from -35° to +35° (-37.2° to +

1.6° C) in 5° F (2.7° C) increments by pressing over adjusting the oven, move temperature 5° F (2.7° C) each time. W ait 4 seconds for the data entry timer to expire to accept the change. Temperature adjustment is retained even through a power failure. Press Enter Immediately press and hold pad for 3 seconds. Adjust oven from -35° to +35° (-37.2° to +

Bake

Press and hold pads for 3 seconds. Press and hold pads for 3 seconds. Press and hold pads for 3 seconds. Press and hold pads for 3 seconds.

cooking operation and remove all relay drives 12 hours after the last pad touch. Hold Sabbath mode. Hold Sabbath mode. Oven must be in BAKE mode before enabling SABBATH.

Hold seconds to adjust beeper loudness level. Press and hold

Hold

display where the temperature normally appears. “LOCK” will display flashing while door is locking. To reactivate the control, press and hold

Cancel

seconds. Press and hold for 3 seconds within 5 minutes of power up. See “Quick Test Mode.” Cycle through the codes.

on the digit-pad.

More+ or Less-

Lower Bake

550

on the digit-pad.

More+ or Less-

pads for 3 seconds.

Clock

pad for 5 seconds to activate

Clock

pad for 5 seconds to disable

Upper Cancel

pads for 3 seconds. “OFF” will

and

pad.

Upper Cancel

and

Upper Cancel

Cook & Hold

Upper Cancel

Upper Bake

pads. To avoid

Lower Bake

pads. To avoid

and

More+

pads for 3

and

pads for 3

and

Upper

Warm

Clock

Delay

Less -

Cook &

Timer

While increasing or decreasing oven temperature, this does not affect selfcleaning temperature.

This mode enables the user to indicate °F or °C on the display. Allows the clock to be reset to factory settings. Allows clock to be toggled On or OFF.

Allows the time on the clock to be toggled from 12 hour or 24 hour display. Enters a demonstrative sales mode.

See Sabbath mode to disable.

“SAb” displays and flashes for 5 seconds. All pad inputs are disabled except for CANCEL and CLOCK pads. This mode disables the normal 12 hour shutoff to allow operation of the bake mode for a maximum of 72 hours. Volume settings are Low, Medium and High. This is a safety feature that can be used to prevent children from accidentally programming the oven. It disables the electronic oven control.

Child lockout features must be reset after a power failure.

The last 5 diagnostic codes will be stored in the non-volatile memory.

See “Description of Error Codes” for explanation.

+ 48 hidden pages

Maytag MGR6875ADB-Q-S-W, MGR6775ADB-Q-S-W User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual