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

Trigger

Action to be

Code

 

 

taken

 

 

A key is sensed

Display "E2". See

 

 

to be pressed

LED/Switch Test.

15

Stuck Key

more than 30

Check connection

of keypad to

seconds, the key

 

 

will be assumed

control board.

 

 

to be stuck.

Replace console if

 

 

necessary.

 

 

 

 

 

The door has not

 

 

Door/Lid

been opened

 

 

switch was

after two

Will display "od". If

17

not seen

complete wash

door open sensed,

open since

cycles. Door

error will clear.

 

switch was not

 

the last two

seen open since

Check door lock.

 

final spins

the last two final

 

 

 

spins.

 

 

 

 

Check for loose

 

 

 

wire connections.

 

 

 

Clear the

 

 

 

diagnostic code

 

 

 

and recheck; if

 

Detected

 

reoccurs, see

 

 

Door Lock Test.

 

door lock

Open door lock

Check door lock

18

switch open

system. See

during cycle

switch with

Board Output

 

motor running.

 

when not

 

Test. Check the

 

expected.

 

output voltage of

 

 

 

door lock coil. If

 

 

 

normal, change

 

 

 

door lock switch. If

 

 

 

not normal, change

 

 

 

Machine Control

 

 

 

Board.

19-21

 

Not Used

 

Diag. Description Code

 

Motor Drive

2E

failure

(Locked, Hall

 

 

sensor fault)

34System

Relay failure

35

 

 

 

3E

Motor failure

(Over

 

current)

 

 

40-49

 

 

 

 

Voltage for

91motor control

bus is over

specified limit

Voltage for

92motor control specified limit

Trigger

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.

Action to be

taken

Display “E3” 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.

 

Door/lid

Door switch is

See Door Lock

 

 

switch

22

detected

read as open

Test

and the door

open during

“Troubleshooting

 

locked switch is

 

cycle (when

read as locked.

Procedures”.

 

not paused).

 

 

 

23-24

 

Not Used

 

 

 

 

 

 

 

 

Motor tach

Tach signal

Displays "bE".

 

exists without

25

signal exists

torque command

Replace Motor

without motor

 

running.

or when not

Control Board.

 

expected.

 

 

 

 

 

 

26-28

 

Not Used

 

 

 

 

 

 

 

Sump

Abnormal

Displays " tE".

 

 

- Loose or pinched

29

thermistor

high/low temp or

wires.

 

failure

ohm resistance

- Bad sump

 

(Optional)

seen

 

thermistor.

 

 

 

30-33

 

Not Used

 

 

 

 

 

16026882

 

 

12

RPL 16026127

 

 

 

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.

June 2006

©2006 Maytag Services

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Image 12
Maytag MAH8700A service manual Diag. Description Code, Exit Service Mode