Door Locked, Motor Does Not Run (E:df On Display) - ALLIANCE HWF561*E1102 Service

Section 3 Troubleshooting (NetMaster Models)

35. DOOR LOCKED, MOTOR DOES NOT RUN (E:DF ON DISPLAY)

TRANSFORMER
(1)
Is
120 Volt AC
present at terminals
1-3 on transformer?
YES
(3)
Is
240 Volt
present on the
motor control at terminals
FS3 to FS2?
YES
(4)
Is
20 Volt AC
present on the motor
control at terminals
H1-7 to FS2?
YES
MOTOR
Check continuity at terminal strip on motor:
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
*Resistance values may vary
depending on type of meter used.
Is there
continuity?
YES
Using an
Ohmmeter, check
for continuity between each
terminal and the motor
housing.
Is there
continuity?
NO
76
(2)
NO
present at terminals
H6-6 to H6-5 on the
electronic display?
Using an Ohmmeter,
check white wire and brown/
yellow wire coming into
transformer for broken/poor
Using an Ohmmeter, check
red wire from transformer
NO
to FS3 on motor control
board for broken wire/poor
connection. If none found,
replace transformer.
Using an Ohmmeter,
check red/black wire
NO
from transformer to H1-7
on motor control board
for broken wire/poor
connection. If none
found, replace
transformer.
NO
Replace
motor.
YES
Replace
motor.
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Is
120 Volt AC
YES
connection.
there continuity
through the motor harness
from plug H-2 and H-5 on the motor
control, to the plug at the
motor?
Is the
fuse blown on the
motor control
board?
Replace motor
control board.
NO
Replace
electronic
control.
Is
NO
YES
YES
Replace
NO
the machine
run now?
Replace motor
control board.
Replace
harness.
fuse.
Does
NO
800168