Maytag MAH6700AW Series Service page 18

Troubleshooting Procedures
To avoid risk of electrical shock, personal injury or death, disconnect power to unit before servicing, unless testing
requires power.
Diag. Description
Code
sensed to be
pressed more
15 Stuck Key
seconds, the
assumed to
The door has
Door/Lid opened after
switch was two complete
not seen wash cycles.
17
open since Door switch
the last two was not seen
final spins
the last two
Detected
door lock
switch open
18
during cycle
when not
expected.
19-21
Door/lid Door switch is
switch read as open
detected and the door
22
open during locked switch
cycle (when
not paused).
23-24
Tach signal
Motor tach
exists without
signal exists
25 without
com mand or
m otor
running.
26-28
Sump
high/low temp
therm istor
29
failure
(Optional)
18
!
Trigger Action to be
taken
Display "E2". See
A key is
M embrane Pad
Check. Check
than 30
connection of
keypad to control
key will be
board. Replace
console if
be stuck
necessary.
not been
W ill display "od". If
door open sensed,
error will clear.
Check door lock
open since
final spins
Check for loose
wire connections.
Clear the
diagnostic code
and recheck; if
reoccurs, see
Door Lock Test.
Open door Check door lock
system. See
lock switch
with m otor Board Output
running.
Test. Check the
output voltage of
door lock coil. If
normal, change
door lock switch. If
not normal, change
Machine Control
Board.
Not Used
See Door Lock
Test
"Troubleshooting
is read as Procedures"
locked.
Not Used
Displays "bE".
torque
Replace Motor
Control Board.
when not
expected.
Not Used
Abnorm al Displays " tE".
- Loose or pinched
or ohm wires
resistance - Bad sum p
seen
therm istor
2
WARNING
Diag. Description
Code
30-33
Motor Drive
failure
2E
(Locked, Hall
sensor fault)
System
34
Relay failure
35
Motor failure
3E (Over
current)
40-49
Voltage for
m otor control
91 bus is over
specified
limit
Voltage for
m otor control
92
specified
limit
Exit Service M ode
To exit:
1) Press Chime and Extra Rinse keys for 3
seconds again, or
2) Press Off, or
3) Unplug the machine. After five (5) m inutes
of inactivity (user key presses) in Service
Mode, the machine will exit the Service
Mode and resume norm al 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.
16026186
Trigger Action to be
taken
Not Used
Display "E3"
Machine
Evaluate wire
control is
harness for loose
attempting to
or unhooked
drive the
connections. If
motor but is
machine has
not seeing
separate m otor
any tach
control, perform
response.
self diagnostic
Visual check
motor test. See
shows m otor
"Board Output
is not m oving.
Test"
Machine
control does Display "Sr".
not see relay
Replace machine
open when it control board.
should.
Not Used
Displays
Over Current "3E".Check the
is detected.
motor windings,
Motor won't the speed sensor,
turn. wiring connections,
or Control Board.
Not Used
Display
Voltage for
motor control "2E".Replace
bus is over Machine Control
lim it
Board.
Voltage for Display
motor control
"2E".Replace
bus is under Machine Control
specified lim it
Board.
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