Whirlpool MAH3000 Motor Windings Check, Disconnect power to the washer prior to testing

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. Unsnap 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.

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. If 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. If the motor does 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).

4 . Carefully lift the front end of the motor control board to disengage the rear lock- ing tabs from the slots in the base. Slowly 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. Reconnect phase C and test with phase B disconnected. If the

motor	does not run	properly, phase	A or
B is	not functioning.	Perform the	motor

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. Each 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. Replace motor if termi- nals are pressed into the motor.

4 . Remount the six-position motor connec- tor onto the motor. Reassemble the drip shield cover onto the motor control.

5 . Reposition the motor control into the washer when finished. Make sure the two screws and the twistlock wire ties are fas- tened properly to the wire harness.

1 6 0 0 8 3 7 3 - 0 1	SECTION 2. ELECTRICAL COMPONENTS & TESTING	2 - 9
© 1998	Maytag Corporation