Maytag MER6875BA Series Скачать руководство пользователя страница 9

Control Testing Procedures 

 

!

WARNING

 

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

 

July 2006 

16027361 

©2006 Maytag Services 

NOTES: 

1

 

"Action Taken" applies as long as the condition exists. If the condition clears, the control recovers. 

2

 

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. 

3

 

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. 

4

 

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

5

 

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

6

 

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 revolutions).  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 
attempt to find the proper position.  If unsuccessful, 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. 

Содержание MER6875BA Series

Страница 1: ...g 12 9 kW 9 7 kW Frequency 60 Hz Element Wattage 240 V Ribbon element 6 inch warmer 100 W Ribbon element 6 1 200 2 Ribbon element dual 9 2 400 1 100 Ribbon element triple 12 2 700 2 000 1 000 Convection Element 1 850 Oven Wattage 240 V Upper Bake 4 pass 1 800 Lower Bake 4 pass 2 600 Upper Broil 4 pass 2 200 Lower Broil 4 pass 3 000 Convection 1 850 Oven Interior Dimensions in cm Height 16 1 2 42 W...

Страница 2: ...VAC If voltage is not present check wiring 2700 1000 1000W triple Measure voltage at element Disconnect wiring to element and measure cold resistance of terminals 240 VAC 700 W Outer Approx 82 Ω 1000 W Middle Approx 57 Ω 1000 W Inner Approx 57 Ω 1300 1100W dual Measure voltage at element Disconnect wiring to element and measure cold resistance of terminals 240 VAC 1300 W Outer Approx 43 Ω 1100 W I...

Страница 3: ...ent Approximately 18 6 Ω 240 VAC see wiring diagram for terminal identification If voltage is not present at broil element check wiring Indicator lights Measure voltage at indicator light If voltage is present and light does not work replace light If voltage is not present at indicator light check wiring Rocker switch Measure continuity of switch positions Open Closed Infinite Continuity Door plun...

Страница 4: ...ure 5 degrees each time Wait 4 seconds for the data entry timer to expire to accept the change Temperature adjustment will be retained even through a power failure While increasing or decreasing oven temperature oven self cleaning temperature is not affected H2 5 Temperature Display Press and hold Upper Cancel and Upper Bake pads for 3 to 5 seconds Indicates F or C on the display H2 5 Clock Displa...

Страница 5: ...ile memory See Description of Error Codes for explanation Illustration Component Procedure Results Control Panel Assembly Continuity is indicated as follows Cancel and Warming Zone pads 6600 Ω max All other pads 10000 Ω max NOTE Pins 6 9 are jumped together in control NOTE Pins 1 10 and 11 18 are loops in circuit 1 18 11 10 Pad 1 2 3 4 5 6 7 8 9 0 Lower Cancel Lower Cancel Upper Cancel Upper Cance...

Страница 6: ... BROIL CONVECT ELEMENT CONVECT FAN OVEN LIGHT IDLE r r r r BAKE PREHEAT r r BAKE r r BROIL PREHEAT r r r BROIL r r r CLEAN PREHEAT r r r r CLEAN r r r r KEEP WARM r r r CONVECT BAKE PREHEAT CONVECT BAKE CONVECT ROAST PREHEAT CONVECT ROAST PROOFING PREHEAT r r r PROOFING r r r DRYING PREHEAT r r DRYING r r During preheat cycle upper oven bake and broil elements are used at full power when lower ove...

Страница 7: ...ion Fan on high speed CLEAN MDL relay activated COOK HOLD Displays last diagnostic code FAVORITE Displays EEPROM version number TIMER Displays main code version number CLOCK All display segments illuminated OVEN LIGHT Oven light activated CANCEL Exit Quick Test mode 1 Even segments on 2 Odd segments on 3 Convection Ring activated Convection Ring DLB activated 4 N A 5 N A 6 N A 7 N A 8 N A 9 N A AU...

Страница 8: ...ables lights and timers 1c2c Keyboard loop improper value Nothing Disables audible for key depression Disables all outputs 1 Disables lights and timers 1c31 Cancel key improper value BAKE flashes 3 Disables all outputs for cavity 1 1c32 Cancel key improper value BAKE flashes 3 Disables all outputs for cavity 1 1c6c No response from EEPROM Nothing Disables all outputs 1 1c7c Calibration value out o...

Страница 9: ...ked 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 st...

Страница 10: ...am and Schematic WARNING To avoid risk of electrical shock personal injury or death disconnect power to range before servicing unless testing requires power 16027361 10 July 2006 2006 Maytag Services Wiring Diagram ...

Страница 11: ... Schematic WARNING To avoid risk of electrical shock personal injury or death disconnect power to range before servicing unless testing requires power July 2006 11 16027361 2006 Maytag Services Schematic Control Circuits ...

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