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Maytag MAH8700A, Technical Information

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Component Testing Procedures 

 

!

WARNING

 

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

 

June 2006 

3 

16026882 

©2006 Maytag Services 

 

RPL 16026127

 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

1 

2 

3 

 
 
 
 
 
 
 
 
 

CN10 

CN9

CN3

CN11 

CN6

CN7

CN5 

RY9 

CN8 

9 

1 

1 

5 

1 

4 

4 

1 

8 

5 

3 

1

3 

1 

Motor 

Normal resistance is approximately 3.0 

Ω

 between any 2 pins (1,2 or 3) on motor 

t

Machine Control Board 

MEMS Sensor 

1 

2 

2 

1 

Summary of Contents for MAH8700A

Page 1: ...ION All safety information must be followed as provided in Service Manual 16026126 WARNING To avoid risk of electrical shock personal injury or death disconnect power to washer before servicing unless testing requires power Model MAH8700A Power Source 120VAC Amperage 10 Amp Frequency 60 Hz Cabinet Dimensions Height 38 Width 27 Depth 30 75 Features Wash Cycles 26 Water Temperatures 6 Water Level In...

Page 2: ...4 and Pin 3 of CN8 0V DC or 3 75V DC Motor Unplug harness connector and test from wire insertion side of connector Pin 1 and Pin 2 of CN9 Pin 1 and Pin 3 of CN9 Pin 2 and Pin 3 of CN9 Any 2 Pins 1 2 3 on Motor Connector 3 0 ohms 3 0 ohms 3 0 ohms 3 0 ohms Drain Pump During drain check voltage at Pin 1 of CN5 and Pin 6 of CN10 120V AC Water Valves Check voltage at Pin 1 and Pin 1 2 4 of CN10 Unplug...

Page 3: ...r to washer before servicing unless testing requires power June 2006 3 16026882 2006 Maytag Services RPL 16026127 1 2 3 CN10 CN9 CN3 CN11 CN6 CN7 CN5 RY9 CN8 9 1 1 5 1 4 4 1 8 5 3 1 3 1 Motor Normal resistance is approximately 3 0 Ω between any 2 pins 1 2 or 3 on motor t Machine Control Board MEMS Sensor 1 2 2 1 ...

Page 4: ...zation may force door open No Tumble Start normal cycle with an empty machine and allow a fill to check tumble See Board Output Test or Quick Spin Test Before test make sure that the tumbler is empty Check for loose connections at machine control board pressure switch motor tach harness and motor control Check motor windings resistance See Component Testing Procedures At CN9 pins 1 3 3 0 ohms Pins...

Page 5: ...ll Not Drain Check if temperature inside the drum is higher than 50 C 122 F If there is no problem with temperature check wiring of machine control board and door lock switch Drain manually by removing drain hose clamp Display shows L0 Press Power Off button to turn off the washer and unplug and reconnect washer Press any key to turn ON the washer If L0 is displayed machine control board and door ...

Page 6: ... a beep is heard When display shows End only the Power Off button will function Press Power Off and make new cycle selections Consumer Information Codes If the consumer observes codes on display see table below LED Display Description Diagnostic code nd The water level fails to drop below the Low Water level reset within 15 minutes before a spin begins 1 LED Display Description Diagnostic code LO ...

Page 7: ... be found in the text following the table Reference the text or symbol indicated in the Test or Display column with the text and symbols indicated in the text following the quick reference table for a more detailed explanation Test or Display To Start or Hold To Cancel or resume Quick Spin Test Press Delay and Rinse Spin Press Delay and Rinse Spin or press Power Off Hold Quick Spin Test step Press...

Page 8: ...l detects proper water level During this time tumble at 45 rpm for 5 seconds in a clockwise direction pause for 2 seconds tumble at 45 rpm for 5 seconds in a counterclockwise direction pause for 2 seconds Continue pattern until the water level is detected Minimum time for this segment to be 5 seconds After water height is achieved continue tumble pattern for another 14 seconds If the washer is equ...

Page 9: ... will be displayed UC if balanced U0 if unbalanced U0 will be displayed during the time when the machine is correcting for the unbalance e g slowing down to redistribute the load or to get to a lower spin speed Once the situation has been corrected i e the load has begun tumbling or the lower speed has resulted in an acceptable amount of balance UC will once again be displayed When the Delay key i...

Page 10: ...the output When activated the machine will tumble for 5 seconds in the CW direction pause for 2 seconds tumble in the CCW direction for 5 seconds pause for 2 seconds repeating this pattern until Delay key is pressed again to turn OFF the tumbling Note All tumble speeds are assumed to be 45 rpm Pressing the Chime key will unlock the door and turn ON all the LED s above the Chime key This output wil...

Page 11: ...clear the diagnostic codes list press the Delay and Chime keys for 3 seconds while viewing the list Diagnostic Codes Diag Code Description Trigger Action to be taken 1 No Drain The water level fails to drop below the Low Water level reset within 15 minutes before a spin begins Displays nd See Will Not Drain Troubleshooting Procedures 2 The door fails to unlock Door failed to unlock after 3 attempt...

Page 12: ... Not Used 29 Sump thermistor failure Optional Abnormal high low temp or ohm resistance seen Displays tE Loose or pinched wires Bad sump thermistor 30 33 Not Used Diag Code Description Trigger Action to be taken 2E Motor Drive failure Locked Hall sensor fault Machine control is attempting to drive the motor but is not seeing any tach response Visual check shows motor is not moving Display E3 Evalua...

Page 13: ...ectrical shock personal injury or death disconnect power to washer before servicing unless testing requires power June 2006 13 16026882 2006 Maytag Services RPL 16026127 NOTE Series 10 11 do not have connector CN11 or MEMS PCB originally Series 12 ...

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