Maytag MAH8700A User Manual

Page 1

27” Front Load Washer - Technical Information

MAH8700A*

• 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 16026126 for detailed installation, operating, testing, troubleshooting, and disassembly instructions.

CAUTION

All safety information must be followed as provided in Service Manual 16026126.

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

Tumble Pattern

Normal 35 per minute Hand Wash 5 per minute

Spin Speed

Max Extract Plus 1100 Medium 800 Gentle 600 Low 400 Drain Only 0

Weight lbs.

Uncrated 191

WARNING

Intellifill

™

June 2006 1 16026882

Page 2

Component Testing Procedures

WARNING

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

NOTE: See “Machine Control Board” on next page for pin and connector locations.

Illustration Component Test Procedure Results

Motor

Heater Relay During water heat check voltage at Pin

Thermistor Unplug harness connector and test

Door Switch Check voltage at Pin #6 and Pin #4 of

Water Sensor Check voltage and frequency at Pin #6

Sump Sensor

Drain Pump During drain check voltage at Pin #1 of

from wire insertion side of connector.

Pin #6 and Pin #3 of CN3.....................

CN3.....................................................

Unplug harness connector and test from wire insertion side of connector.

Pin #7 of CN10 and Pin #3 of CN5......

Pin #8 of CN10 and Pin #3 of CN5......

and Pin #7 of CN3...............................

Check voltage and frequency at Pin #6

and Pin #8 of CN3...............................

Check voltage at Pin #4 and Pin #3 of

CN8..................................................... 0V DC or 3.75V DC

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

CN5 and Pin #6 of CN10..................... 120V AC

Water Valves Check voltage at Pin #1 and Pin #1,2,4

AC Power Check voltage at Pin #1 and Pin #3 of

Reactor Unplug harness connector and test

MEMS Sensor Check voltage at Pin #1 and Pin #5 of

of CN10...............................................

Unplug harness connector and test from wire insertion side of connector. (Pre valve) Pin #3 of CN10 and Pin #2

of CN7.................................................

(Hot valve) Pin #2 of CN10 and Pin #2

of CN7.................................................

(Bleach valve) Pin #4 of CN10 and Pin

#2 of CN7.....................

(Main valve) Pin #1 of CN10 and Pin

#2 of CN7............................................

CN5.....................................................

Check voltage at Pin #1 of CN5 and

Pin #1 of CN6......................................

#1 of CN5 and Pin #2 of RY9............... 120V AC

from wire insertion side........................ Less than 1 ohm

CN11...................................................

Check voltage at Pin #1 and Pin #4 of

CN11...................................................

13K ohms @ 70F/21C (2.5V DC)

Door Open = 5V DC Door Closed = 0V DC

60 ohms 60 ohms

Reset water level = 2.5V DC, 25.8 KHz

3.0 ohms

120V AC when each valve operates

1100 ohms

120V AC

Approximately 2.5V (2.2V – 2.8V)

16026882 2 June 2006 RPL 16026127

Page 3

Component Testing Procedures

WARNING

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

Machine Control Board

CN3

CN11

1 5

CN8

1 4

8 4 1

CN10

CN9

CN6

RY9

CN5

CN7

MEMS Sensor

Motor

Normal resistance is approximately 3.0 Ω between any 2 pins (1,2 or 3) on motor

June 2006 3 16026882

Page 4

Troubleshooting Procedures

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

Will Not Start

• Plug cord into live electrical outlet. Check for proper voltage.

• Check fuse or reset circuit breaker.

• Push any key to turn ‘ON’ the clothes washer

and press the Rotary Cycle Selector knob to

start the clothes washer.

• Close door and push the Rotary Cycle Selector knob to start the clothes washer.

• Check to see if the clothes washer is in a pause, soak or suds period in the cycle. Wait briefly and it may start. If washer is in suds period,

“SudS” will display, instead of the time

remaining.

• Check for restricted drain system. If there is an

electrical problem in the drain system, “nd” error will occur after 15 minutes.

• Check water supply.

• Check the line screen and water valve screen.

• Check for loose connections at machine control

board terminal connections CN5 and CN6 (See “Component Testing Procedures”).

• Replace machine control board.

Leaking

No Tumble

16026882 4 June 2006 RPL 16026127

• Make sure inlet hose connections are not leaking. Check for rubber gasket damage due to over-tightening.

• Check standpipe for leak. Wrap a dry rag around the standpipe opening. If rag becomes wet, leak is fault of home plumbing. Be sure the standpipe is capable of accepting the incoming flow of water from the clothes washer.

• Make sure end of drain hose is correctly inserted and secured to drain standpipe.

• Check internal hose connections (fill, drain systems, dispenser hoses & clamps).

• Check rubber boot. Remove, reposition and reinstall, if necessary.

• Check for possible kinked dispenser to outer tub hose. Hot water pressurization may force door open.

• 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

WARNING

“Component Testing Procedures”). At CN9, pins 1 & 3 = 3.0 ohms. Pins 1 & 2 = 3.0 ohms.

Pins 2 & 3 = 3.0 ohms.

• Check belt.

• Faulty main control board.

• Faulty motor.

Will Not Spin

• Check to make sure the door is fully closed.

• Check for water left inside the clothes washer. If

present, see Will Not Drain.

• See Board Output Test or Quick Spin Test.

(Before test, make sure that the tumbler is

empty.) If it doesn’t tumble after the test above,

check unbalanced load scenario, machine

control board, and motor.

• Check for loose connections at pressure switch,

motor, tach harness, motor control and machine

control board terminal connections CN8, CN9,

CN3 (See “Component Testing Procedures”).

• Check motor windings resistance (See

“Component Testing Procedures”). At CN9, pins 1 & 3 = 3.0 ohms. Pins 1 & 2 = 3.0 ohms.

Pins 2 & 3 = 3.0 ohms.

• Check belt.

No Water Fill

•

Test water fill. See Board Output Test.

• Check to make sure water supply is turned on

fully.

• Check electrical circuit and connections at the

water valve, and pressure switch.

• Check for kinks in inlet hoses.

• Check for clogged inlet screens.

• Visually check hot, cold, pre and bleach valves

separately for fill.

• Check for low water pressure. May be

dependent on pressure entering home.

Variations may occur due to usage in the home

at the time machine is used.

• Check for frozen pipes and hoses.

• Check resistance of water valve coils (See

“Component Testing Procedures”). Check pin

#2 of CN7 with pin #1, 2, 3 or 4 of CN10.

Normal is 1.18K ohms.

• Check for loose connections at the pressure

switch or on the machine control board at CN3.

(See “Component Testing Procedures”).

Page 5

Troubleshooting Procedures

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

Tub Full of Suds

• Check for restricted drain system. See Will Not Drain and Will Not Spin.

• Check for loose wire connections at control board and pump.

• Check to see if belt is off motor and pulley.

• Use high efficiency or low sudsing detergent

specially formulated for front load washers.

• Reduce detergent amount for that specific load size and soil level. Towel loads have a minimal amount of soil present and typically create more

suds.

• Use drain pump and cold water to empty tub.

See Board Output Test.

• Run the clothes washer through another complete cycle using the coldest water, tablespoon of salt and no detergent.

Wet Clothes

• Very small clothes loads can cause unbalanced loads. Add additional towels.

• Excessive suds may have been present, due to not using high efficiency detergent. Reduce amount of detergent usage.

• See Will Not Spin.

• “Drain Only

Will Not Lock

• Door not all the way closed or not properly aligned. Possible laundry load is too large to close door.

• Place washer into Service Mode and check for diagnostic codes 4,18 & 22. See Service Mode.

• Check door lock system. See Board Output Test. Check the output voltage of door lock coil.

If normal, change door lock switch. If not normal, change main control board. (See

“Component Testing Procedures”).

• Check electrical connections at door lock switch assembly and machine control board (CN10), (See “Component Testing Procedures”).

Will Not Unlock

• Push door closed to make sure nothing from inside is pressing against it, which may keep it from unlocking.

• Door locked from water level too high. Opening door will result in water draining from door opening.

• Check for water remaining in the drum. If water

is present inside drum, see Will 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

June 2006 5 16026882

” or “Low” Spin Speed was selected.

WARNING

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 lock switch should be checked.

• Place washer into Service Mode and check for diagnostic codes 4,18 & 22. See Service Mode.

• Check electrical connections at door lock switch assembly and machine control board (CN10). (See “Component Testing Procedures”).

• Check door lock system. See Board Output Test. Check the output voltage of door lock coil.

If 120 V present, change door lock switch. If 120 V not present, change machine control board. (See “Component Testing Proceduress”).

Will Not Drain

• Check for restricted drain system.

• In cold climates check for frozen drain hose.

• Check for 120 V at the pump when a spin cycle

is selected.

• Check pump motor winding resistance (See “Component Testing Proceduress”).

Normal resistance is about 14.2 ohms (±7%).

• Check that the machine control correctly senses

the water level in the washer. See Board Input Test.

• Check drain pump. See Board Output Test.

• Check the machine control board connections at

CN10 (Pin 6) for the pump. Should see 120 V. (See “Component Testing Procedures”).

• Check tub to pump hose for twist in hose.

Wrong Water Temperature

• Check that both faucets are turned on fully.

• Make sure water heater is set to deliver a

minimum of 120°F (49°C) hot water at the tap. Also check water heater capacity and recovery rate.

• If the water heater is located a long distance from washer, the water line may need to be purged prior to starting wash cycle.

• Too Hot/Too Cold: This washer uses a reduced amount of water, while the control board meters the incoming flow to regulate the actual temperature of the water in the tub. This may

appear to be significantly warmer/cooler than

expected.

• Make sure the temperature selection is correct.

• Disconnect inlet hoses from the Water Valve

and clean the valve screens of any debris.

Page 6

Troubleshooting Procedures

WARNING

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

Vibration/Walking/Noise

• Check for proper load size and distribution.

• Check for proper installation.

• Verify unit has new motion sensor / control

board.

• Check vent flappers for foam present on flapper.

• Check for loose pump to bracket screws.

• Check for stripped pump mounting bolts.

• Check location of top suspension springs.

• Check console for broken plastic locating tabs,

LED

Display

Description

Door failed to unlock after

3 attempts.

Continuous fill of 12 minutes. Total fill of 14 minutes.

Door failed to lock after 3 attempts.

Water sensor level fault.

Diagnostic

check for front panel noise - add foam as needed.

• Check if debris is present in pump causing noise.

• Check dampers / inserts-front/grey, rear/green.

• Clean floor and check condition of rubber feet.

• Do Paper Test - Place paper strips under front

feet of washer, pull them out while in Quick Spin Test at highest rpm. Adjust feet to hold

paper.

Rubber Feet Leaving Marks on Floor

• Use a pencil eraser to remove mark.

• Walk washer into location, do not drag.

Additive Cups Full of Water

• A small amount of water in cups is normal.

• Remove and wash dispenser tray, removable

cup, and rinse cap.

• Level washer.

Buttons do not Respond

• Option and Function buttons respond differently according to each cycle.

• Child Lock feature has been selected. To

disable feature press and hold Wash/Rinse Temp and Spin Speed simultaneously until 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

The water level fails to drop below the Low Water level reset within 15 minutes, before a spin begins.

Diagnostic

code

Hr 3E

A fault is detected in the water level sensor. Data (frequency) shows the water level is at or above the overflow level.

A key is sensed to be pressed more than 30 seconds, the key will be assumed to be stuck.

Never exceeded 400 rpm due to an unbalanced load.

The door has not been opened after two complete wash cycles. Door switch was not seen open since the last two final spins.

Open door lock switch with motor running.

Door switch is read as open and the door locked switch is read as locked.

Motor tach signal exists without motor running.

Abnormal high/low temp or ohm resistance seen.

Machine control is attempting to drive the motor but is not seeing any tach response. Visual check shows motor is not moving. (Locked, Hall Sensor fault).

System Relay failure.

Heater Relay failure

Over Current is detected. Motor won't turn.

Voltage for motor control bus is over specified limit.

Voltage for motor control bus is under specified limit.

code

16026882 6 June 2006 RPL 16026127

Page 7

Troubleshooting Procedures

WARNING

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

Service Mode Service Mode enables service personnel to verify the

operation of the washing machine and diagnose problems.

Service Mode can be entered in the middle of any wash cycle without interrupting the cycle. While in Service Mode, the technician can cancel the current cycle, set a

continuous running mode, start a variety of special service tests and view diagnostic displays.

Enter / Exit Service Mode

To enter Service Mode press the Chime and Extra Rinse

keys for 3 seconds or until the control beeps.

NOTE: The washer must be ‘ON’ before Service Mode

can be entered.

The motor speed will be displayed when started (motor not

running display will be “0”). The present state of the

machine will not be changed (i.e., the current cycle in progress will not be interrupted and only the display will

change). All LED’s will be turned ‘OFF’ except the Door Lock LED; it will continue to display the condition of the

door lock.

To exit Service Mode:

1) Press Chime and Extra Rinse keys for 3 seconds

again, or

2) Press Power Off button, or

3) Unplug the machine.

To pause while in Service Mode: Pressing the Rotary Cycle Selector knob while running a

test will pause the individual test.

Access Service Tests and Diagnostic Features while in Service Mode.

The following table summarizes special tests and features

available in Service Mode, along with methods of

activation and cancellation. A more detailed description of each test can 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

Quick Spin Test

Hold Quick Spin Test

step

Fast Time-

Down Test / Advance to next step

(or Hold)

Press Delay and Rinse & Spin

Press Rotary Cycle Selector (during test)

Press Wash/Rinse Temp to start test. Press Wash/Rinse Temp during cycle to

advance.

To Cancel

(or resume)

Press Delay and Rinse & Spin or

press Power Off Press Rotary

Cycle Selector

Press Power Off

Test or Display To Start

Quick Service

Cycle

Hold Quick Service Cycle Step

LED/Switch Test

Board

Input Test

Board Output Test /

System Check

Diagnostic Code Display (Initial)

All Diagnostic Codes

Cycle Count No. for Diagnostic Code

Clear All Diagnostic Codes

Display Software Version

Cycle Count Press Chime

(or Hold)

Press Wash/Rinse Temp and Soil Level

Press Rinse & Spin and Spin Only together

Press Delay for 3 seconds (then individual buttons to test) Turn Rotary Cycle Selector clockwise, the LED’s around it will be toggled. Turn Rotary Cycle Selector counterclockwise, the 7-segment LED’s toggle. Press Rotary Cycle Selector, all of the LED’s around the

Rotary Cycle Selector will be

toggled. Press Spin Only Press Spin Only

Press Spin Speed Press Power

Press Rinse & Spin – displays ‘d’

Rotate Rotary Cycle Selector either direction

Press and hold Rotary Cycle Selector, while diagnostic code is displayed

Press Delay and Chime together while displaying diagnostic codes

Press Soil Level. Press Soil

To Cancel

(or resume)

Press Power Off (also exits Service Mode)

Press Rinse &

Spin and Spin Only

Press Power Off twice after starting test

Off.

Press Rinse & Spin again

N/A

Release Rotary

Cycle Selector

(returns to diagnostic code display)

N/A

Level.

N/A

June 2006 7 16026882

Page 8

Troubleshooting Procedures

WARNING

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

Quick Spin Test

While in Service Mode, press Delay and Rinse & Spin keys to start a Quick

Spin Test. Quick Spin Test steps follow:

• Start spinning, and after reaching a maximum spin speed.

• Stay at maximum spin speed for 2 minutes and stop

Quick Spin Test.

Hold Quick Spin Step

If the Rotary Cycle Selector knob is pressed during the Quick Spin Test, the machine will hold

at the next highest index speed for 10 minutes (1 minute on early MAH8700’s). At the end of ‘Hold’ time, the machine will

resume and finish the Quick Spin Test. To cancel the ‘Hold’ and allow the Quick Spin Test to continue, press the Delay and Rinse & Spin keys.

Fast Time Down Test

While any test or cycle is running in Service Mode, pressing the

Wash/Rinse Temp key will advance the program to the

next cycle stage. Cycle stages are located at key locations in the machine operation. As the program is advanced it will index as follows: The end of each fill (the same as the beginning of a tumble session for Wash, or Rinse); at the beginning of a drain session; at the beginning of a spin session (at this position, check the water level, if over reset level, drain first before entering the spin function); at the beginning of a fill session; at the beginning of Bleach fill; at the beginning of Fabric Softener fill; and every 3 minutes during the tumble sessions (Wash and Rinses).

Quick Service Cycle

3 seconds will start a Quick Service Cycle. This will be a quick check of all systems. If display shows “od” then open and close door. Pressing Spin Speed key will advance to the

next cycle. The following steps are performed: Display shows

“SC”.

1. Hot water for 5 seconds and then turn off.

2. Cold water for 5 seconds and then turn off.

3. Bleach valve for 5 seconds and then turn off.

4. Softener dispenser using cold water and bleach water for 5 seconds and then turn off.

5. Turn ‘ON’ Cold valves until the control 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 equipped, turn ‘ON’ heater for first 5 seconds of this tumble pattern. Advance

While in Service Mode, pressing the

Wash/Rinse Temp and Soil Level keys for

the washer to next step if water is not connected to machine.

6. Drain and spin to maximum speed. Machine will achieve maximum speed using the safest, fastest method.

7. Display a “PA” (Passed) continuously for 5 seconds if no

diagnostic codes were logged during the test. Washer will

return to the normal Service Mode at the end of the 10

second period.

The “SC” in the display will blink as an indication of failure, and continue blinking until the Quick Service Cycle test has reached the end. Any diagnostic code logged during this test will result in failure of the test, but will not necessarily stop the test. During the Quick Service Cycle, pressing the Spin

Speed key will advance to the next step. Pressing the Rinse & Spin and Spin Only keys will suspend the machine at the

current step for up to 10 minutes or until Delay and Chime keys are pressed. All LED’s should flash ‘ON’ and ‘OFF’ while the system is suspended or on hold.

LED/Switch Test

While in Service Mode, press the Delay key

to start a LED/Switch Test. All the LED’s can be toggled or

slewed by pressing the key associated with the LED or set of

LED’s. All keys (including the Power Off button) must be pressed within 5 minutes for this test to pass. “PA” will be

displayed for five (5) seconds once all keys have been pressed and the test is completed. Following 20 seconds of inactivity at any point, this test will exit without any display.

The Power Off button must be pressed twice within 30

seconds to cancel this test.

Switch Action

Delay Chime Extra Rinse Soil Level Spin Speed Wash/Rinse Temp Rinse & Spin Spin Only Prewash Extended Spin Rotary Cycle Selector Rotary Cycle Selector Rotary Cycle Selector Power Off

Press once Press 3 times Press once Press 3 times Press 6 times

Press 6 times

Press once Press once Press once Press once

Rotate 1 full revolution clockwise

1 position counterclockwise

Press once

16026882 8 June 2006 RPL 16026127

Page 9

Troubleshooting Procedures

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

Board Input Test

after a key press. Pressing the Spin Only key again cancels the test. (Display shows “in”). While in Service Mode follow chart to check respective

function.

• When the Rotary Cycle Selector knob is set to

“Super Wash

is pressed, the door position will be displayed: “0P” if open, “CL” if closed.

• When the Rotary Cycle Selector knob is set to

“Normal

pressed, the Lock position will be displayed: “UL” if unlocked, “L0” if locked.

• When the Rotary Cycle Selector knob is set to

“Whites pressed, the High water level will be displayed: “ if below level, “ level is defined as the over flow water level.

• When the Rotary Cycle Selector knob is set to

“Wrinkle Control knob is pressed, the Medium water level will be

displayed: “—0” if below level, “—1” if above level.

The Medium water level is defined as the minimum water level needed such that the heater can be turned ‘ON’ (only MAH8700* and MAH9700* models have heaters).

• When the Rotary Cycle Selector knob is set to

“Colors

pressed, the Low water level will be displayed: “_0” if below level, “_1” if above level. The Low water level

is defined as the reset water level.

• When the Rotary Cycle Selector knob is set to

“Hand Wash is pressed, the level of Tub unbalance 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 is pressed, the water

temperature will be displayed in Degrees F (Fahrenheit).

• When the Rotary Cycle Selector knob is set to

“Delicates pressed, the water temperature will be displayed in degrees C (Celsius).

While in Service Mode, pressing the

Spin Only key will begin the Board Input Test. This test turns on a specified output

” and the Rotary Cycle Selector knob

” and the Rotary Cycle Selector knob is

–

1” if above level. The High water

” and the Rotary Cycle Selector

” and the Rotary Cycle Selector knob is

” and the Rotary Cycle Selector knob

” and the Rotary Cycle Selector knob is

WARNING

• When the Rotary Cycle Selector knob is set to

“Super Wash

Cycle Selector knob clockwise until all LED’s are ‘OFF’, then press Rotary Cycle Selector knob to display frequency reading. “2560” means 25.60 Hz

(washer empty).Frequency value drops as water rises.

While performing the Board Input Test in Service Mode, follow this quick reference chart to check

respective functions.

Selection Function Display

Rotary Cycle Selector set to

“Super Wash

Press Rotary Cycle

Selector. Rotary Cycle

–

0”

Selector set to

“Normal

Rotary Cycle Selector. Rotary Cycle Selector set to

“Whites

Rotary Cycle Selector. Rotary Cycle Selector set to

“Wrinkle Control

Press Rotary Cycle

Selector. Rotary Cycle Selector set to

“Colors

Rotary Cycle Selector. Rotary Cycle Selector set to

“Hand Wash

Press Rotary Cycle Selector.

Press Delay key.

Rotary Cycle Selector set to

“Delicates

Rotary Cycle Selector.

All cycle LEDs are

off, press Rotary Cycle Selector

”. Press

”.

”. Press

”, the LED lights up. Revolve Rotary

Door position

Lock state

High water

level

Medium water

level

Low water level

Tub balance

Water

temperature

Water

temperature

Water Level

Frequency(Hz)

“0P” or “CL”

“UL” or “L0”

–

0” if below

“

level. “

above level.

“—0” if below

level. “—1” if

above level.

“_0” if below

level. “_1” if

above level.

“UC” if

Balanced. “U0”

if Unbalanced

Degrees F

Degrees C

“2560” (empty).

Frequency

drops as water

rises.

–

1” if

June 2006 9 16026882

Page 10

Troubleshooting Procedures

WARNING

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

Board Output Test

While in Service Mode, pressing the Spin Speed key will begin the Board Output Test.

This test turns ‘ON’ a specified output after a

key press. Pressing the Spin Speed key again

cancels the test. Only one output can be ‘ON’ at any time. All outputs will be turned ‘OFF’ after five (5) minutes of inactivity.

• When the Rotary Cycle Selector knob is set to “Super Wash” and the Rotary Cycle Selector knob is pressed,

the main relay will be toggled (either from ‘ON’ to ‘OFF’ or from ‘OFF’ to ‘ON’).

• When the Rotary Cycle Selector knob is set to “Normal and the Rotary Cycle Selector knob is pressed, the hot

water valve will be turned ‘ON’. This output will remain

‘ON’ until the Rotary Cycle Selector knob is pressed

again to turn ‘OFF’ the output. The control will not allow the machine to fill past the High water level.

• When the Rotary Cycle Selector knob is set to “Wrinkle Control” and the Rotary Cycle Selector knob is pressed,

the cold water valve will be turned ‘ON’. This output will

remain ‘ON’ until the Rotary Cycle Selector knob is

pressed again to turn ‘OFF’ the output. The control will not allow the machine to fill past the High water level.

• When the Rotary Cycle Selector knob is set to

“Delicates pressed, the bleach valve will be turned ‘ON’. This output

will remain ‘ON’ until the Rotary Cycle Selector knob is

pressed again to turn ‘OFF’ the output. The control will not allow the machine to fill past the High water level.

• When the Rotary Cycle Selector knob is set to “Hand Wash” and the Rotary Cycle Selector knob is pressed,

the pre wash valve will be turned ‘ON'. This output will

remain ‘ON’ until the Rotary Cycle Selector knob is

pressed again to turn ‘OFF’ the output. The control will not allow the machine to fill past the High water level.

• When the Rotary Cycle Selector knob is set to “Quick Wash” and the Rotary Cycle Selector is pressed, the

drain pump will be turned ‘ON’. This output will remain

‘ON’ until the Rotary Cycle Selector knob is pressed

again to turn ‘OFF’ the output.

• Pressing the Delay key will turn ‘ON’ the motor and the Delay LED. This output and the LED will remain ‘ON’ until

the Delay key is pressed again to turn ‘OFF’ 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 will

attempt to unlock one time, if safe to do so.

• Pressing the Wash / Rinse Temp key will lock the door and all the Wash / Rinse Temp LED’s will turn ‘ON’. Pressing the Chime key will unlock the door and the all the Chime LED’s will turn ‘ON’.

• When the Rotary Cycle Selector knob is set to “Whites and the Rotary Cycle Selector knob is pressed, the

bleach valve and the cold water valve will be turned ‘ON'

” and the Rotary Cycle Selector knob is

”

to check the fabric softener fill. This output will remain

‘ON’ until the Rotary Cycle Selector knob is pressed

again to turn ‘OFF’ the output. The control will not allow the machine to fill past the High water level.

• Pressing the Rinse & Spin key will turn ‘ON’ the heater if

the water level is above the Heater Safety Level. If the water level is below the Heater Safety Level, a warning beep will be given and the heater will not be turned ‘ON’. The heater output will remain ‘ON’ until the “Rinse & Spin” key is pressed again to turn ‘OFF’ the output.

While performing the Board Output Test in Service Mode,

follow this quick reference chart to check respective function.

Selection Component Function

Rotary Cycle Selector set to “Super

Wash”. Press Rotary

Main Relay

‘ON’ to ‘OFF’ or

‘OFF’ to ‘ON’.

Cycle Selector. Rotary Cycle Selector set to

“Normal

”. Press

Rotary Cycle

Hot Water

Valve

press valve

‘ON’. 2

press

valve ‘OFF’.

Selector. Rotary Cycle Selector set to

“Wrinkle Control

”.

Press Rotary Cycle

Cold Water

Valve

press valve

‘ON’. 2

press

valve ‘OFF’.

Selector. Rotary Cycle Selector set to

“Delicates

”. Press

Rotary Cycle

Bleach Valve

press valve

‘ON’. 2

press

valve ‘OFF’.

Selector. Rotary Cycle Selector set to “Hand

Wash”. Press Rotary

Pre Wash

Valve

Cycle Selector. Rotary Cycle Selector set to “Quick

Wash”. Press Rotary

Drain Pump

Cycle Selector.

Press Delay Motor

press, valve

‘ON’. 2

press,

valve ‘OFF’.

press Drain

Pump ‘ON’. 2

press Drain

Pump ‘OFF’.

press Motor

press

on. 2

Motor ‘OFF’.

Press Chime Door Lock Press Wash / Rinse

Temp

Door Lock Lock Door

Rotary Cycle Selector set to

“Whites

”. Press

Rotary Cycle

Bleach Valve

and Cold

Water Valve

Selector.

Press Rinse & Spin Heater

1 Attempt to

unlock.

press, Fabric

Softener Fill. 2

press, valves

‘OFF’

press, heater

‘ON’ if water level

high enough. 2

press, heater

‘OFF’.

16026882 10 June 2006 RPL 16026127

Page 11

Troubleshooting Procedures

WARNING

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

Display Diagnostic Codes

The diagnostic code display can be toggled

‘ON’ and ‘OFF’ from Service Mode by pressing the

Rinse & Spin key and rotating the Rotary Cycle Selector knob. The display will show a “d”.

Diag. Code

Description

The door/lid

fails to lock

Trigger Action to be

Door failed to

lock after 3

attempts

Displays "FL".See Will Not Lock

“Troubleshooting Procedures”.

taken

Rotating the Rotary Cycle Selector knob in either

direction will cycle through the list of codes one code at a time with no wrap. Once an initial direction is selected by the user (either Clockwise or Counterclockwise), subsequent movements of the knob in the same direction will show older codes. If the user changes

direction and turns the Rotary Cycle Selector knob in

the opposite direction, the more recent code will be displayed. If rotation is continued to the limits of the list, the display will remain at the top or the end of the list. A

pair of dashes “- -” will be displayed at the end of the list

of codes, when the control reaches the top, it will again

show “d”.

A code generated during the current cycle will be

displayed with the Spin Speed LED turned ‘ON’. If no

cycle is currently running, a code generated during the

previous cycle will be displayed with the Spin Speed

LED turned ‘ON’.

Access Other Features

While a diagnostic code is displayed, if the Rotary Cycle Selector knob is pressed and held, the machine

will display the number of cycles since the diagnostic code occurred.

Clear Diagnostic Codes

To clear the diagnostic codes list, press the Delay and Chime keys for 3 seconds while viewing the list.

Diagnostic Codes

Diag.

Description

Code

1 No Drain

The door

fails to unlock

3 No Fill

Trigger Action to be

The water level

fails to drop

below the Low

Water level reset

within 15

minutes, before

a spin begins.

Door failed to unlock after 3

attempts

Continuous fill of

12 minutes.

Total fill of 14

minutes.

Displays "nd". See Will Not Drain

“Troubleshooting Procedures”.

Displays "LO". See Will Not Unlock

“Troubleshooting Procedures”.

Displays "nF". See No Water Fill

“Troubleshooting Procedures”.

taken

5-7

12-14

Water level

sensor fault.

Unbalance

or cabinet

hit detected

during final

spin, which

prevented

the spinner

from

exceeding

400 rpm

Water

sensor level

fault.

Will not

remember

machine

settings

Not Used

Input signal from

water level

sensor is out of

range, Washer

will beep and

pause the wash

cycle.

Not Used

Never exceeded

400 rpm due to

an unbalanced

load.

Water level in

the machine is

believed to be

above the

overflow level.

When this

condition is

detected, the

machine will

automatically

begin pumping

water out until it

falls below the overflow level.

Difficulty in

reading memory

Not Used

Displays "LE". See No Water Fill

“Troubleshooting Procedures”.

Will display “dc” See Wet Clothes

"Troubleshooting Procedures".

First check to see that water valve is not stuck. If water valve is OK, check water level sensor.

See Clear

Diagnostic Codes.

Disconnect and reconnect the washer power cord at power supply outlet. If condition still exists, replace machine control board.

June 2006 11 16026882

Page 12

Troubleshooting Procedures

WARNING

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

Diag.

Description

Code

15 Stuck Key

Door/Lid

switch was

not seen

open since

the last two

final spins

Detected door lock

switch open

during cycle

when not

expected.

19-21

Door/lid

switch

detected open during cycle (when

not paused).

23-24

Motor tach

signal exists

without motor

running.

26-28

Sump

thermistor

failure

(Optional)

30-33

Trigger Action to be

A key is sensed

to be pressed more than 30

seconds, the key

will be assumed

to be stuck.

The door has not

been opened

after two

complete wash

cycles. Door

switch was not seen open since the last two final

spins.

Open door lock

switch with

motor running.

Not Used

Door switch is

read as open

and the door

locked switch is

read as locked.

Not Used

Tach signal

exists without

torque command

or when not

expected.

Not Used

Abnormal

high/low temp or

ohm resistance

seen

Not Used

Display "E2". See LED/Switch Test.

Check connection of keypad to control board. Replace console if necessary.

Will display "od". If

door open sensed, error will clear. Check door lock.

Check for loose wire connections. Clear the diagnostic code and recheck; if reoccurs, see

Door Lock Test.

Check door lock system. See

Board Output Test. Check the

output voltage of door lock coil. If normal, change door lock switch. If not normal, change Machine Control

Board.

See Door Lock Test

“Troubleshooting Procedures”.

Displays "bE".

Replace Motor Control Board.

Displays " tE".

- Loose or pinched wires.

- Bad sump thermistor.

taken

Diag.

Description

Code

Motor Drive

failure

(Locked, Hall

sensor fault)

System

Relay failure

Motor failure

(Over

current)

40-49

Voltage for

motor control

bus is over

specified limit

Voltage for

motor control

specified limit

Exit Service Mode

To exit:

1) Press Chime and Extra Rinse keys for 3

seconds again, or

2) Press the Power Off key, or

3) Unplug the machine. After five (5) minutes of

inactivity (user key presses) in Service Mode, the machine will exit the Service Mode and resume normal operations. Pressing the Power Off key will completely exit Service Mode. If a

cycle is running, cancel the cycle. Pressing the

Rotary Selector knob while running a test will

pause the individual test, while remaining in

Service Mode. A power loss during Service Mode will cancel this mode.

Trigger Action to be

Display “E3”

Machine control

is attempting to drive the motor

but is not seeing

any tach

response. Visual

check shows

motor is not

moving.

Machine control

does not see

relay open when

it should.

Not Used

Over Current is detected. Motor

won't turn.

Not Used

Voltage for motor

control bus is

over limit

Voltage for motor

control bus is

under specified

limit.

Evaluate wire harness for loose or unhooked connections. If machine has separate motor control, perform self diagnostic motor test. See

“Board Output Test”.

Display "Sr".

Replace machine control board.

Displays

"3E".Check the

motor windings, the speed sensor, wiring connections, or Control Board.

Display

"2E".Replace

Machine Control Board. Display

"2E".Replace

Machine Control Board.

taken

16026882 12 June 2006 RPL 16026127

Page 13

Wiring Schematics

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

WARNING

NOTE: Series 10 – 11 do not have connector CN11 or MEMS PCB originally.

Series 12

June 2006 13 16026882

Maytag MAH8700A User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual