Maytag MAH8700A User Manual

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

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

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

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”).

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