Whirlpool Cabrio WED6200S User Manual page 85

• If the thermistor resistance does not
agree with table, replace the exhaust
thermistor.
• If the thermistor resistance checks
agree with the measurements in the
table, replace the machine control
electronics.
INLET THERMISTOR
The machine control electronics monitors the
inlet temperature using an inlet thermistor that
is part of the high limit thermostat assembly.
1. Activate the diagnostic test mode.
2. If F-24 or F-25 is a displayed error in the
diagnostic test mode, the thermistor or
wire harness is either open or shorted.
• Unplug dryer or disconnect power.
• Check wire connections at the machine
control electronics and inlet thermistor.
See Accessing & Removing the Elec-
tronics Assemblies, and for inlet therm-
istor location see Figure 9.
• If wire connections are good, remove
the wires from the inlet thermistor/high
limit thermostat assembly and replace
the assembly.
• Plug in dryer or reconnect power.
3. If F-24 or F-25 is not an error that is dis-
played in the diagnostic test mode, the
connections to the thermistor are good.
Therefore, check the thermistor's resis-
tance value, using the following process:
• Unplug dryer or disconnect power.
• Access the heater assembly. See Fig-
ure 1, and Removing the Back Panel.
• Hold a glass bulb thermometer capa-
ble of reading from 68° to 176°F (20°
to 80°C) in the heater assembly.
• Check the resistance of the inlet therm-
istor. See Figure 9 for the location.
INLET THERMISTOR RESISTANCE
TEMP.
°F (°C)
68°(20°)
77°(25°)
86°(30°)
95°(35°)
104°(40°)
113°(45°)
122°(50°)
The table above shows the resistance
values that should be observed for the
various temperatures at the heater as-
sembly.
• If the thermistor resistance does not
agree with the measurements in the
table, replace the inlet thermistor/ high
limit thermostat assembly.
• If the thermistor resistance agrees with
the measurements in the table, replace
the machine control electronics.
TEST #4b 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 first removing
the back panel. See Removing the Back
Panel; and for thermal fuse location see
Figure 9.
3. Using an ohmmeter, check the continuity
across the thermal fuse.
• If the ohmmeter indicates an open cir-
cuit, replace the failed thermal fuse.
6-11
RES. RES.
TEMP.
RANGE RANGE
°F (°C)
k Ω k Ω
61.2–63.7 131°(55°) 14.6–15.3
49.0–51.0 140°(60°) 12.1–12.8
39.5–41.1 149°(65°) 10.2–10.7
32.0–33.3 158°(70°) 8.5–9.0
26.1–27.2 167°(75°) 7.2–7.6
21.4–22.3 176°(80°) 6.1–6.5
17.6–18.5