Test #3A: Thermal Fuse; Test #3B: Thermal Cut-Off; Test #3D: Inline Thermal Fuse; Test #3C: Gas Valve - Whirlpool WETLV27HW0 Service Manual

DANGER
Electrical Shock Hazard
Only authorized technicians should perform
diagnostic voltage measurements.
After performing voltage measurements,
disconnect power before servicing.
Failure to follow these instructions can result in
death or electrical shock.

TEST #3a: Thermal Fuse

The thermal fuse is wired in series with the
dryer drive motor.
1. Unplug dryer or disconnect power.
2. Access the thermal fuse by removing
the front access panel. Thermal Fuse is
located on blower housing.
3. Using an ohmmeter, check the
continuity across the thermal fuse.
¾ If the ohmmeter indicates an open circuit, replace the
thermal fuse.

TEST #3b: Thermal Cut-Off

(Electric Dryer)
If the dryer does not produce heat, check the status of the
thermal cut-off.
1. Unplug dryer or disconnect power.
2. Access the thermal cut-off by removing the front access
panel. Thermal Cut-Off (and High Limit Thermostat) is
located on the heater element housing.
GAS HEATER STRIP CIRCUIT
GAS DRYER HEATER CIRCUIT
L1
BK HI - LIMIT
TIMER
THERMOSTAT
CONTACTS
BK R
C — B — A
For Service Technician Use Only
THERMAL OPERATING
THERMOSTAT
FUSE
R/W
R/W
Figure 2 - Gas Dryer Heater Circuit
3. Using an ohmmeter, check the continuity across the
thermal cut-off.
4. If the ohmmeter indicates an open circuit, perform the
following:
Replace both the thermal cut-off and high limit
thermostat (see figure below). In addition, check for
blocked or improper exhaust system and heat element
malfunction.
High Limit Thermostat (L), Thermal Cut-Off (R)

TEST #3c: Gas Valve

(See page 4-12)

TEST #3d: Inline Thermal Fuse

(Gas Dryer)
1. Unplug dryer or disconnect power.
2. Access the inline thermal fuse by removing the rear panel.
3. Using an ohmmeter, check the continuity from the red/
white lead on the operating thermostat to the red/white
lead on the high limit thermostat.
¾ If the ohmmeter indicates an open circuit, replace the
harness. The inline thermal fuse is not repairable.
GAS BURNER
R
IGNITOR
BK
HOLD ASSIST
W
MAIN
LBU LBU
W
FLAME SENSOR
LBU
27" Stacked Laundry Center
TESTING – DRYER
CENTRIFUGAL
SWITCH
1M
LBU
DOOR SWITCH
2M
R
n
N
W
W
4-11