Maytag AER5712BA Series Manual

Electric Freestanding Range⎯Technical Information
November 2005 1 16026688
© 2005 Maytag Services
AER5712BA* MER5751BA* MER5752BA* MERH752BA* MERM752BA*
•Due to possibility of personal injury or property damage, always contact an authorized technician for servicing or
repair of this unit.
•Refer to Service Manual 16026784 for detailed installation, operating, testing, troubleshooting, and disassembly
instructions.
CAUTION
!
All safety information must be followed as provided in Service Manual 16026784.
!WARNING
To avoid risk of electrical shock, personal injury, or death, disconnect power to range before servicing, unless
testing requires power.
*Rating of 208 VAC is approximately 80% of 240 VAC value.
Model AER5712BA* MER5751BA* MER5752BA* MERH752BA* MERM752BA*
Power Source
Electrical rating, 240 V 10.7 kW 10.7 kW 10.7 kW 10.7 kW 10.7 kW
Electrical rating, 208 V 8.1 kW 8.1 kW 8.1 kW 8.1 kW 8.1 kW
Amperage 40 Amp 40 Amp 40 Amp 40 Amp 40 Amp
Frequency 60 Hz 60 Hz 60 Hz 60 Hz 60 Hz
Element Wattage @ 240 V
Ribbon element, dual 2,500* 2,500* 2,500* 2,500* 2,500*
Ribbon element, 6 inch 1,200* 1,200* 1,200* 1,200* 1,200*
Ribbon element, ceramas N/A N/A 2,700* 2,700* N/A
Oven Wattage @ 240 V (208 V)
Bake 4 pass 2,600 (1950) 2,600 (1950) 2,600 (1950) 2,600 (1950) 2,600 (1950)
Broil 4 pass 3,000 (2250) 3,000 (2250) 3,000 (2250) 3,000 (2250) 3,000 (2250)
Oven Interior Dimensions in. (cm)
Height 16.5 (41.9) 16.5 (41.9) 16.5 (41.9) 16.5 (41.9) 16.5 (41.9)
Width 23 (58.4) 23 (58.4) 23 (58.4) 23 (58.4) 23 (58.4)
Depth 18.125 (46) 18.125 (46) 18.125 (46) 18.125 (46) 18.125 (46)
Product Exterior Dimensions in. (cm)
Height overall 46.75 (118.75) 46.75 (118.75) 46.75 (118.75) 46.75 (118.75) 46.75 (118.75)
Width 29.875 (75.9) 29.875 (75.9) 29.875 (75.9) 29.875 (75.9) 29.875 (75.9)
Depth, excluding handle 25 (63.5) 25 (63.5) 25 (63.5) 25 (63.5) 25 (63.5)
Features
Oven capacity (cubic feet) 4.9 4.9 4.9 4.9 4.9
Manual oven light Incandescent Incandescent Incandescent Incandescent Incandescent
Oven window Large Standard Large Large Large
Oven racks Yes Yes Yes Yes Yes
Timer Yes Yes Yes Yes Yes
Delay start Yes Yes Yes Yes Yes
Storage drawer Removable Removable Removable Removable Removable
Handle Standard Standard Standard Standard Standard
Weight lbs. (kg)
Crated 166 (75.3) 166 (75.3) 166 (75.3) 166 (75.3) 166 (75.3)

Component Testing Procedures
!WARNING
To avoid risk of electrical shock, personal injury or death; disconnect power to range before servicing, unless
testing requires power.
16026688 2 November 2005
© 2005 Maytag Services
Illustration Component Test Procedure Results
Oven light socket Measure voltage at oven light ................
Remove one wire from receptacle and
test resistance of terminals ....................
120 VAC, see wiring diagram for terminal
identification.
Continuity with bulb inserted.
If voltage is not present at oven light,
check wiring or light switches.
Manual latch
assembly with switch Disconnect wires and test for continuity per wiring diagram.................. See wiring diagram for schematic layout.
Refer to Parts Manual for replacement
components.
NOTE: If latched is moved to LOCK
position during Bake or Broil, the control
cancels the function.
Oven temperature
sensor Measure resistance................................ Approximately 1000 Ωat room
temperature 80° F.
Bake element Disconnect wire leads to element and
measure resistance of terminals ............
Measure voltage at bake element ..........
Approximately 20.6 to 22.6 Ω.
240 VAC, see wiring diagram for terminal
identification. If voltage is not present at
bake element, check wiring.
Broil element Disconnect wire leads to element and
measure resistance of terminals ............
Measure voltage at broil element ...........
Approximately 17.7 to 19.5 Ω.
240 VAC, see wiring diagram for terminal
identification. If voltage is not present at
broil element, check wiring.
Indicator light
Measure voltage at indicator light........... 240 VAC
If voltage is present and light does not
work, replace light.
If voltage is not present at indicator light,
check wiring.
Rocker switch
(MER5751BA*,
MER5752BA*,
MERH752BA*,
MERM752BA*)
Measure continuity of switch positions:
Closed ............................................
Open...............................................
Continuity
Infinite
Rocker switch
(AER5712BA*) Measure continuity of switch positions: Closed ............................................
Open...............................................
Continuity
Infinite
L2
L1
H2
P
H1
1
2
3
4
5
Infinite switch
Connect volt-ohms meter to
H1 and H2.
Measure the following for voltages at
LO, MED, HI:
H1 to H2..........................................
Approximate
Time On Time Off
LO 5% 95%
MED (4-5) 35% 65%
HI 100% 0%
240 VAC. If not, replace switch.
L2
L1
H2
P
H1
1
2
3
4
5
Infinite switch
Connect volt-ohms meter to
H1 and H2.
Measure the following for voltages at
LO, MED, HI:
H1 to H2 .........................................
Approximate
Time On Time Off
LO 5% 95%
MED (4-5) 35% 65%
HI 100% 0%
240 VAC. If not, replace switch.

Component Testing Procedures
!WARNING
To avoid risk of electrical shock, personal injury or death; disconnect power to range before servicing, unless
testing requires power.
November 2005 3 16026688
© 2005 Maytag Services
Illustration Component Test Procedure Results
Infinite switch
(MER5752BA*)
Connect volt-ohms meter to
H1 and H2.
Measure the following for voltages at
LO, MED, HI:
H1 to H2........................................
Approximate
Time On Time Off
LO 5% 95%
MED (4-5) 35% 65%
HI 100% 0%
240 VAC. If not, replace switch.
Infinite switch
(MER5752BA*)
Connect volt-ohms meter to
H1 and H2.
Measure the following for voltages at
LO, MED, HI:
H1 to H2........................................
Approximate
Time On Time Off
LO 6% 94%
MED (4-5) 40% 60%
HI 100% 0%
240 VAC. If not, replace switch.
Ribbon element,
2500W Disconnect wire leads to element and measure cold resistance of terminals ...
Measure voltage at element..................
Approximately 21.3 to 23.5 Ω.
240 VAC. If voltage is not present,
check wiring.
Ribbon element,
ceramas, 2700W
(MER5752BA*,
MERH752BA*)
Disconnect wire leads to element and
measure cold resistance of terminals ...
Measure voltage at element..................
Approximately 19.4 to 22 Ω.
240 VAC. If voltage is not present,
check wiring.
Ribbon element,
1200W Disconnect wire leads to element and measure cold resistance of terminals ...
Measure voltage at element..................
Approximately 44.3 to 48.9 Ω.
240 VAC. If voltage is not present,
check wiring.

Control Testing Procedures
!WARNING
To avoid risk of electrical shock, personal injury or death; disconnect power to range before servicing, unless
testing requires power.
16026688 4 November 2005
© 2005 Maytag Services
Control Feature Test Procedure Results
M1 Oven temperature
adjustment Press Bake pad.
Enter 550 on the digit-pad.
Immediately press and hold Bake pad
for 3 to 5 seconds.
Oven can be adjusted from -35 to +35
degrees in 5-degree increments by
pressing More + or Less - pads. To
avoid over adjusting the oven, move
temperature 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, this does not affect self-
cleaning temperature.
M1 Temperature display
Press and hold Cancel and Bake
pads for 3 to 5 seconds. Press
More + or Less - pads to change.
This mode enables the user to indicate
°F or °C on the display.
M1 Clock display Press and hold Cancel and Clock
pads for 3 to 5 seconds. Allows clock to be toggled on or off.
M1 24-hour clock Press and hold Cancel and Delay
pads for 3 to 5 seconds. Press
More + or Less - pads to change.
Allows the time on the clock to be
toggled from 12-hour or 24-hour display.
M1 Factory default
Press and hold Cancel and Keep
Warm pads for 3 to 5 seconds until
beep sounds.
Allows the clock to be reset to factory
settings.
M1 12-hour off Control automatically cancels cooking
operations and removes relay drives
12 hours after the last pad touch.
See Sabbath mode to disable.
M1 Sabbath mode
Hold Clock pad for 3 to 5 seconds to
activate Sabbath mode.
Hold Clock pad for 3 to 5 seconds to
disable Sabbath mode.
Initiate desire bake function before
entering Sabbath mode.
"SAb" flashes for 5 seconds then remain
on until timed-out or cancelled.
The status "SAb" is NOT fault code 5A6.
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.
The oven light is not disabled.
M1 Child lockout Press and hold Cancel and Cook &
Hold pads for 3 to 5 seconds until
beep sounds.
To reactivate the control, press and
hold Cancel and Cook & Hold pads
for 3 to 5 seconds.
This safety feature is used to prevent
children from accidentally programming
the oven (the electronic range control is
completely disabled).
Child lockout features must be reset after
a power failure.
M1 Diagnostic code
display Press and hold More + pad within 30
seconds of powering up the unit.
Cycle through the codes using the
More + or Less - pads.
The last 5 diagnostic codes will be stored
in the non-volatile memory.
See "Description of Error Codes" for
explanation.

Control Testing Procedures
!WARNING
To avoid risk of electrical shock, personal injury or death; disconnect power to range before servicing, unless
testing requires power.
November 2005 5 16026688
© 2005 Maytag Services
"Quick Test" Mode for Electronic Range Control
Follow the procedure below to access the quick test mode. Entries must be made within 32 seconds of each other or
the control will exit the quick test mode.
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 one of the following pads once to activate the response.
Press the pad a second time to deactivate the response.
NOTE: This mode must be entered within the first 5 minutes after power up.
NOTE: If the temperature sensor is greater than 400° F or if the temperature sensor reaches 400° F while under
test, the Quick Test mode will be disabled.
Display will indicate the following:
Key Operation
[Bake] Bake relay activated, DLB relay activated
[Broil] Broil relay activated, DLB relay activated
[Keep Warm] DLB relay activated
[Cook&Hold] Last Diagnostic Code displayed
[Clean] MDL relay activated (lock and unlock)
[Delay] (M1) EEPROM Version Number displayed
[Timer] Main Code Version Number displayed
[Clock] All Segments on
[More +] Even Segments on
[Less –] Odd Segments on
[Cancel] End Factory Test Mode
Description of Error Codes
Error diagnostic codes can only be viewed by entering the Diagnostic Code Display Mode.
Each error code consists of four digits and each digit is described in the following table.
Digit Description
1st Primary System: 1 – Local to the control circuit board
3 – Sensor or meat probe
4 – Control input
9 – Door lock
2nd Measurable: d – Diagnostic: measurable parameter
c – Control related, replace control
3rd Secondary System: Sequential numbering
4th Oven Cavity: 1 – Upper oven (or single cavity oven)
2 – Lower oven
c – Control specific
Diagnostic Code Display Mode must be accessed within 30 seconds of powering-up the control.

Control Testing Procedures
!WARNING
To avoid risk of electrical shock, personal injury or death; disconnect power to range before servicing, unless
testing requires power.
16026688 6 November 2005
© 2005 Maytag Services
Diagnostic Code Checking
Code Description When Checked Detection
1c1c Shorted key Always 1 minute
1c31 Cancel key circuit problem Always 1 minute
1c4c Micro communication failure Serial communications 5 tries
1c5c Vcc or ground Cook or clean active 1 minute
1c6c EEPROM error Cook or clean active 5 tries
1c7c Control not calibrated Always 5 seconds
1c8c Cooking program error Cook or clean active 5 tries
1d11 Runaway temp (650° F), door unlocked Latch unlocked 5 seconds
1d21 Runaway temp (950° F), door locked Latch locked 5 seconds
3d11 Sensor open Cook or clean active 5 seconds
3d21 Sensor shorted Cook or clean active 5 seconds
4d11 Door position switch not closed when door locked Clean active 1 minute
4d51 Door switch circuit failure-neither open or closed Always 1 minute
9d11 Latch will not lock Latch should be locked 1 minute
9d21 Latch will not unlock Latch should be unlocked 1 minute
9d31 Unlock state unknown, both locked and unlocked Always 1 minute
9d41 Unlock state unknown, neither locked or unlocked Always 1 minute
Diagnostic Code Handling
Code Measurable Displayed Action Taken By Control
1c1c Keypress Nothing Disables audible for key depression
Disables key
1c31 Cancel key improper value Nothing Disables all outputs 1
1c4c Checksum invalid Nothing Disables all outputs 1
1c5c Vcc/Gnd at test point Nothing No action
1c6c No response from EEPROM Nothing Disables all outputs 1
1c7c Calibration value out of range Nothing No action
1c8c CRC invalid Nothing Cancels active cook functions
1d11 Sensor resistance > 2293 Ohms Nothing Disables all outputs
1d21 Sensor resistance > 2662 Ohms Nothing Disables all outputs
3d11 Sensor resistance > Infinite Ohms BAKE flashes 2Disables all cook functions for cavity
3d21 Sensor resistance > 0 Ohms BAKE flashes 2Disables all cook functions for cavity
4d11 Door switch not closed when door locked Nothing Disables Clean function 4
4d51 Door switch not open or closed LOCK flashes 2Disables Clean function 3, 4
9d11 Lock switch not closed (Clean activated) LOCK flashes 2Ignore soil level selection, disables clean 5
9d21 Lock switch closed (Clean not activated) LOCK on steady Disables cooking functions 5
9d31 Unlock switch both locked and unlocked Nothing No action 5
9d41 Unlock switch neither locked or unlocked Nothing No action 5
9d51 Lock switch not locked or unlocked Nothing Disables Clean function 5

Control Testing Procedures
!WARNING
To avoid risk of electrical shock, personal injury or death; disconnect power to range before servicing, unless
testing requires power.
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© 2005 Maytag Services
NOTES:
1"Action Taken" applies as long as the condition exists. If the condition is corrected, the control recovers.
2Flash rate: 0.2 seconds on, 0.1 second off. Pressing any key clears the display until the fault clears and is re-triggered.
3"Action Taken" applies until there is a POR (Power On Reset ["hard reset"]).
4If the control believes the door is locked, unlock it when the function cancels and the cavity temperature cools.
5Special 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.
•If at POR, the latch is not at a known good 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.
Cook
Hold
Broil
Clean
Delay Clock Keep
Warm
CANCEL
Bake
Timer
_
+
M1 Control

Wiring Diagram and Schematic
!WARNING
To avoid risk of electrical shock, personal injury or death; disconnect power to range before servicing, unless
testing requires power.
16026688 8 November 2005
© 2005 Maytag Services
Control Circuits

Wiring Diagram and Schematic
!WARNING
To avoid risk of electrical shock, personal injury or death; disconnect power to range before servicing, unless
testing requires power.
November 2005 9 16026688
© 2005 Maytag Services
Wiring Diagram