Maytag MGR6775ADB/Q/S/W, MGR6875ADB/Q/S/W manual Maytag Services 16023415

Page 13

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:

1

2

3

4

5

6

“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.

©2004 Maytag Services

16023415

13

Image 13
Contents Service Important Information Customer Service Support CenterTable of Contents Servicing Safety Practices for ServicerReceiving Oven Using the OvenProduct Safety Devices Connecting Range to GasBaking, Broiling, and Roasting Electrical RequirementsGeneral Information Placement of the Oven SpecificationsService Parts and AccessoriesGrounding ArningRange Description Troubleshooting Procedures 16023415 Maytag Services Maytag Services 16023415 Component Troubleshooting No gas flows to burner Ignitor glows red Check lamp and replace is necessary Testing Procedures Testing Procedures Illustration/Component Test Procedure H2 Control Testing Model MGR6875AA H3 Control Testing Model MGR6775AA Quick Test Mode for Electronic Range Control This mode will also display the current fault code for Top Burner Lower Assembly Top Surface Valve and Spark SwitchMoving and/or Replacing Range Leveling LegsOven Sensor Oven Light ReplacementElectronic Clock Oven DoorsGasket and Door Disassembly Upper Latch Assembly Lower Latch AssemblyOven Door Hinge Convection AssemblyRegulator Gas ValveOven Cavity Components Gas Oven RacksRack Positions Appendix a Maytag Double Oven Gas Range Double Oven Gas Range Installation Instructions Installation Instructions Installation Instructions Installation Instructions Installation Instructions Installation Instructions Installation Instructions Installation Instructions Appendix B Operating During a Power Failure Suggested Heat SettingsSurface Controls Pilotless IgnitionTo prevent the cooktop from discoloring or staining Surface CookingTo set the Clock To change the clock to 24-hour formatFault Codes TimerAdjusting the Sound Level Locking the Control Oven DoorsSetting Upper and Lower Oven Functions Baking Return To Factory Default SettingsCook & Hold To set bakeDelay Cook & Hold To cancel Keep Warm Adjusting the Oven TemperatureTo adjust the oven temperature Keep WarmTo set Broil Broiling upper oven onlyOven Vent Automatic Shut-Off/Sabbath ModeOven Lights Oven BottomLower oven Upper ovenTo remove oven racks To replace oven racksSurface Cooking Surface Cooking Control Panel Using the TouchpadsClock Adjusting Sound Level Baking with Convection Setting Oven FunctionsTo set Convect Bake To set Convect Roast Roasting With ConvectionBroiling upper oven only Broiling Chart Broil times are based on a 5 minute preheatOven Cooking Favorite To cancel a Favorite cycle in progressTo start a cycle programmed into Favorite Sabbath Mode Notes Rack Positions lower oven Care & Cleaning Do not USE ANY Cleaning Product Containing Chlorine Bleach Appendix C LP Conversion Instructions LP Conversion Instructions LP Conversion Instructions LP Conversion Instructions