21
• Replace the outlet
thermal fuse.
• Check the thermistor
(test # 3).
• Check exhaust
system for restrictions.
With the connectors disconnected,
check the resistance between the
terminals of the thermal fuse on the
blower housing. Is the resistance 0
Ω
?
YES
NO
Is the arm of the idler pulley
contacting the belt switch lever?
(Normal operating position is NO
CONTACT.)
With the connectors disconnected, check
the resistance between terminals 1 and 2
(N.O.) of the belt switch on the motor
mount. Is the resistance <1
Ω
with no
switch contact?
• Check idler pulley
and arm.
• Check drum belt
condition
(stretched/broken)
• Check drum belt
routing
• Replace the belt
switch.
• Check Motor. (Refer to MOTOR DIAGRAM AND SCHEMATIC.)
• Check if control connector is plugged in.
YES
YES
NO
• Recheck voltage at
main PCB and
replace if no
voltage.
With the connectors disconnected,
check the resistance between BL2-1
(BN) and BL3-3 (YL). Is the
resistance 2-4
Ω
?
Measure with the door closed.
YES
NO
With the connectors disconnected,
check the resistance between WH1-
1 (WH) and BL3-2 (BN). Is the
resistance 2-4
Ω
?
Measure with the door closed.
In diagnostic test mode, press the
START / PAUSE button. Is the
voltage 120 VAC between WH1-
1(WH) and BL3-1 (BN)?
• Recheck voltage at
main PCB and
replace if no
voltage.
• Replace main
PCB
YES
YES
NO
NO
YES
• Check door switch
activation.
• Check wiring
harness and
connections.
• See DOOR
SWITCH TEST #5.
With the connectors disconnected,
check the resistance between WH1-
1 (WH) and BL3-3 (YL). Is the
resistance 0
Ω
?
Measure with the door closed.
NO
Test 3
Motor test
