Maytag MAH6700AW Series, Сервисная инструкция

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Troubleshooting Procedures
!
WARNING
To avoid risk of electrical shock, personal injury or death, disconnect power to unit before servicing, unless testing
requires power.
18 16026186
©2006 Maytag Services
Diag.
Code Description Trigger Action to be
taken
15 Stuck Key
A key is
sensed to be
pressed more
than 30
seconds, the
key will be
assumed to
be stuck
Display " E2 ". See
M embrane Pad
Check.
Check
connection of
keypad to control
board. Replace
console if
necessary.
17
Door/Lid
switch was
not seen
open since
the last two
final spins
The door has
not been
opened after
two complete
wash cycles.
Door switch
was not seen
open since
the last two
final spins
W ill display " od ". If
door open sensed,
error will clear.
Check door lock
18
Detected
door lock
switch open
during cycle
when not
expected.
Open door
lock switch
with m otor
running.
Check for loose
wire connections.
Clear the
diagnostic code
and recheck; if
reoccurs, see
Door Lock Test .
Check door lock
system. See
Board Output
T est
. Check the
output voltage of
door lock coil. If
normal, change
door lock switch. If
not normal, change
Machine Control
Board.
19-21 Not Used
22
Door/lid
switch
detected
open during
cycle (when
not paused).
Door switch is
read as open
and the door
locked switch
is read as
locked.
See Door Lock
T est
“Troubleshooting
Procedures”
23-24 Not Used
25
Motor tach
signal exists
without
m otor
running.
Tach signal
exists without
torque
com mand or
when not
expected.
Displays " bE ".
Replace Motor
Control Board.
26-28 Not Used
29
Sump
therm istor
failure
(Optional)
Abnorm al
high/low temp
or ohm
resistance
seen
Displays " tE" .
- Loose or pinched
wires
- Bad sum p
therm istor
Diag.
Code Description Trigger Action to be
taken
30-33 Not Used
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 m otor
is not m oving.
Display “ E3 ”
Evaluate wire
harness for loose
or unhooked
connections. If
machine has
separate m otor
control, perform
self diagnostic
motor test. See
“
Board Output
Test ”
34
System
Relay failure
Machine
control does
not see relay
open when it
should.
Display " Sr ".
Replace machine
control board.
35 Not Used
3E
Motor failure
(Over
current)
Over Current
is detected.
Motor won't
turn.
Displays
"
3E ".Check the
motor windings,
the speed sensor,
wiring connections,
or Control Board.
40-49 Not Used
91
Voltage for
m otor control
bus is over
specified
limit
Voltage for
motor control
bus is over
lim it
Display
"
2E ".Replace
Machine Control
Board.
92
Voltage for
m otor control
specified
limit
Voltage for
motor control
bus is under
specified lim it
Display
"
2E ".Replace
Machine Control
Board.
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.
2