Motor Windings Check - Maytag Neptune MAH3000 Service Manual

To gain access to the motor control board
terminals (Figure 2-6):
1 . Disconnect power to the washer prior to
testing.
2 . Remove the two screws securing the mo-
tor control assembly to the base.
the two twist-lock wire ties restraining the
motor to the motor control board harness
b a s e .
3 . Remove the green ground wire, line & neu-
tral wires and the JP4 connector from the
motor control board.
4 . Carefully lift the front end of the motor
control board to disengage the rear lock-
ing tabs from the slots in the base.
drag the motor control board, with motor
harness attached, toward the front of the
washer and place in front of the washer.
5 . Remove the screw securing the splash
shield covering the face of the motor con-
trol board. Pivot the splash shield with top
screw in the motor control board metal
frame, allowing the plastic shield to be-
come an electrical shield between the
motor control board and the base.
6 . Reconnect the ground wire, line 1 and neu-
tral wires. Leave the JP4 connector off the
board (Figure 2-6).
7 . Place the timer knob into the delay
i n c r e m e n t s .
8. Plug the power cord into the wall socket
and press the push-to-start button.
9. Check Phase C by disconnecting the yel-
low or orange wire at the motor control
board. If the motor operates with a slight
growling sound, phases A and B are oper-
ating correctly.
test with phase B disconnected.
motor does not run properly, phase A or
B is not functioning.
1 6 0 0 8 3 7 3 - 0 1
Unsnap
Slowly
Reconnect phase C and
If the
Perform the motor
© 1998 Maytag Corporation
w i n d i n g s c h e c k ( S e e M o t o r W i n d i n g s
C h e c k ) .
10. Check Phase B by disconnecting the white
or red wire at the motor control board.
the motor operates with a slight growling
sound, phases A and C are operating cor-
rectly. Reconnect phase B and test with
phase A disconnected.
not run properly, phase A or C is not func-
t i o n i n g . P e r f o r m t h e m o t o r w i n d i n g s
check (See Motor Windings Check).

Motor Windings Check

1 . Disconnect power to the unit.
2 . Remove each pair of phase wires from the
motor control and perform an ohm check
of each wire leading to the motor.
wire pair should show 2-3 ohms resistance
(Figure 2-5).
2 . There should be no continuity between
any of the terminals and the frame of the
m o t o r .
3 . Check that all six motor terminals are se-
cure and at the same height in the con-
nector housing.
nals are pressed into the motor.
4 . Remount the six-position motor connec-
tor onto the motor.
shield cover onto the motor control.
5 . Reposition the motor control into the
washer when finished.
screws and the twistlock wire ties are fas-
tened properly to the wire harness.
SECTION 2. ELECTRICAL COMPONENTS & TESTING
If the motor does
Each
Replace motor if termi-
Reassemble the drip
Make sure the two
2 - 9
If