Maytag MER6875BA Series Technical Information Download Page 7 | Manualshive

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Maytag MER6875BA Series Technical Information Download Page 7

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

7

16027361

©2006 Maytag Services

"Quick Test" Mode for Electronic Range Control

Follow the procedure below to perform the Electronic Range Control (ERC) quick test. Instructions must be entered
within 30 seconds of each other (via the touch pad) or the ERC will exit the quick test.
1.

Press and hold

CANCEL

and

BROIL

pads for 3 to 5 seconds.

2. Once the control has entered the "Quick Test" mode, release both pads.
3. Press each of the following pads indicated in the table below.

NOTE:

Press the applicable pad once to activate the associated response.

Press the applicable pad a second time to deactivate the associated response.

Display will indicate the following:

Pad Response

BAKE....................................Bake DLB and Bake relay activated
BROIL ..................................Broil DLB and Broil relay activated
KEEP WARM .......................Bake DLB and Broil DLB activated
CONVECT BAKE.................Convection Fan on low speed
CONVECT ROAST ..............Convection 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
AUTOSET ............................Steps through last 5 diagnostic codes
Warming Zone .....................Warming Zone Relays activated

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

1

st

Primary System:

1 – Local to the control circuit board

3 – Sensor or meat probe

4 – Control input

9 – Door lock

2

nd

Measurable:

d – Diagnostic: measurable parameter

c – Control related, replace control

3

rd

Secondary System: Sequential numbering

4

th

Oven Cavity:

1 – Upper oven (or single cavity oven)

2 – Lower oven

c – Control specific

Diagnostic Code Display Mode may be activated at power-up by

pressing and holding

the

AUTOSET

pad for 3 to 5

seconds.

Diagnostic Code Display Mode may be accessed only when applying power to the control.

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Summary of Contents for MER6875BA Series

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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...

Page 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 ...

Page 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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