Service manual

800170 17

Section 3 Troubleshooting (Washer)

To reduce the risk of electric shock, fire, explosion, serious injury or death:

• Disconnect electric power to the washer/dryer before servicing.

• Close gas shut-off valve to gas dryer before servicing.

• Never start the washer/dryer with any guards/panels removed.

• Whenever ground wires are removed during servicing, these ground wires must be

reconnected to ensure that the washer/dryer is properly grounded.

W014R1

WARNING

4. NO MOTOR ROTATION, OR DRIVE FAILURE CODE “E:DF” ON ELECTRONIC DISPLAY

UNITS

NOTE: Verify that motor is receiving proper voltage. Disconnect electrical power to washer.

TEST PROCEDURE

a. At the rear of the washer, remove the lower access panel.

b. Reach in through the access panel opening and disconnect motor wire harness from motor.

c. Using an Ohmmeter, measure resistance at the terminals on the motor. Refer to Table 1.

d. Replace motor if there is an open circuit on tach input (terminals 6-7) or winding circuits (terminals 1, 2 and

3), or if there is continuity between any terminal and the motor housing.

e. An open circuit between terminals 4 and 5 indicates a stuck or worn brush. Refer to appropriate service

procedure below.

SERVICE PROCEDURE: STUCK BRUSHES

a. Remove motor from washer. Refer to Paragraph 100.

b. Using a flashlight, view brushes through holes in motor end shield. Refer to Figure 3.

c. Inspect both brushes to determine if either brush braided wire is binding the brush movement. The braided

wire might be snagged on the seam in the corner of the metal brush holder. Refer to Figure 3.

NOTE: The copper braided wire should be located in the center of the brush assembly. If the braided wire

has fallen to the bottom of the brush, it will cause binding.

d. After determining which brush assembly is binding, carefully use the tip of a small screwdriver to unsnag

and reposition the braided wire. Refer to Figure 4. Make sure spring is making unobstructed contact with the

end of the brush. Rotate armature by hand to assure that brushes are seated.

e. Recheck resistance between motor terminals 4 and 5 to verify the brush position has been corrected.

f. Reinstall motor in washer.

g. Run washer through cycle to verify proper operation.

Motor Resistance Values

TACH INPUT Terminals 6-7 Approximately 15 Ohms

BRUSHES Terminals 4-5 Less than 70 Ohms

WINDING Terminals 1-3 Approximately 1.1 Ohms

WINDING Terminals 1-2 Approximately 2.0-2.4 Ohms

WINDING Terminals 2-3 Approximately 3.4 Ohms

NOTE: Resistance values may vary depending on type of Ohmmeter used.

Table 1