Exit Service Mode - Maytag MAH9700AW* Service Manual

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
Tach signal
exists without
Motor tach
signal exists command or
25 without
motor
running. (Abnormal
26-28
Abnormal
Sump
high/low temp
thermistor
29
failure
resistance
(Optional)
30-33
attempting to
Motor Drive
motor but is
failure
2E not seeing
(Locked, Hall
sensor fault)
response.
Visual check
shows motor
is not moving.
control does
System
34 not see relay
Relay failure
open when it
35
20
!
Trigger Action to be
taken
torque
Displays " bE".
when not
Replace Machine
expected
Control Board.
condition
only).
Not Used
Displays " tE".
- Loose or pinched
or ohm
wires
- Bad sump
seen
thermistor
Not Used
Machine Display "E3"
control is Evaluate wire
harness for loose or
drive the unhooked
connections. If
machine has
any tach separate motor
control, perform self
diagnostic motor
test. See "Board
Output Test"
Machine
Display "Sr".
Replace machine
control board.
should.
Not Used
WARNING
Diag. Description
Code
Heater relay
36
failure.
Motor failure
3E (Over
current)
40-49
Voltage for
motor control
91 bus is over
specified
Voltage for
motor control
92
specified

Exit Service Mode

To exit:
1) Press Chime and Extra Rinse keys for
3seconds again, or
2) Press Off, 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 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.
16025909 Rev. 0
Trigger
Heater Relay
Check signal
not sensed.
Over Current
is detected. motor windings, the
Motor won't
turn. wiring connections,
Not Used
Voltage for
motor control
bus is over
limit
limit
Voltage for
motor control
bus is under
limit specified limit
©2005 Maytag Services
Action to be
taken
Display "Hr".
Replace Machine
Control Board.
Displays
"3E".Check the
speed sensor,
or Control Board.
Display
"2E".Replace
Machine Control
Board.
Display
"2E".Replace
Machine Control
Board.