Maytag MED5800TW Technical Education - Page 65

Thermal Cutoff Tco And, Inlet Thermistor, High-limit Thermostat, Electric Models Only

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WARNING Electrical Shock Hazard Disconnect power before servicing. Replace all parts and panels before operating. Failure to do so can result in death or electrical shock. THERMAL CUTOFF (TCO) AND INLET THERMISTOR/ HIGH-LIMIT THERMOSTAT (ELECTRIC MODELS ONLY) Thermal Cutoff (TCO) Thermal Cutoff (TCO) Inlet Thermistor / High-Limit Thermostat High-Limit Thermostat Terminals Refer to page 4-14 for the procedure for accessing the thermal cutoff (TCO) and inlet thermistor/high-limit thermostat. 1. Unplug dryer or disconnect power. 2. Disconnect the wires from the component you are testing. 3. Set the ohmmeter to the R x 1 scale. 4. Thermal Cutoff and High-Limit Thermostat: Touch the ohmmeter test lead to the component terminals. The meter should indicate continuity (0 Ω). 5. Set the ohmmeter to the R x 100K scale. 6. Inlet Thermistor: Use the following chart to check the thermistor: INLET THERMISTOR RESISTANCE TEMP. °F (°C) RES. RANGE kΩ TEMP. °F (°C) RES. RANGE kΩ 68°(20°) 61.2-63.7 131°(55°) 14.6-15.3 77°(25°) 49.0-51.0 140°(60°) 12.1-12.8 86°(30°) 39.5-41.1 149°(65°) 10.2-10.7 95°(35°) 32.0-33.3 158°(70°) 8.5-9.0 104°(40°) 26.1-27.2 167°(75°) 7.2-7.6 113°(45°) 21.4-22.3 176°(80°) 6.1-6.5 122°(50°) 17.6-18.5 Inlet Thermistor 5-5

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5-5
Electrical Shock Hazard
Disconnect power before servicing.
Replace all parts and panels before operating.
Failure to do so can result in death or electrical shock.
WARNING
THERMAL CUTOFF (TCO) AND
INLET THERMISTOR/
HIGH-LIMIT THERMOSTAT
(ELECTRIC MODELS ONLY)
Thermal Cutoff (TCO)
Inlet Thermistor /
High-Limit Thermostat
INLET THERMISTOR RESISTANCE
TEMP.
°F (°C)
RES.
RANGE
kΩ
TEMP.
°F (°C)
RES.
RANGE
kΩ
68°(20°)
61.2–63.7
131°(55°)
14.6–15.3
77°(25°)
49.0–51.0
140°(60°)
12.1–12.8
86°(30°)
39.5–41.1
149°(65°)
10.2–10.7
95°(35°)
32.0–33.3
158°(70°)
8.5–9.0
104°(40°)
26.1–27.2
167°(75°)
7.2–7.6
113°(45°)
21.4–22.3
176°(80°)
6.1–6.5
122°(50°)
17.6–18.5
Refer to page 4-14 for the procedure for ac-
cessing the thermal cutoff (TCO) and inlet
thermistor/high-limit thermostat.
1.
Unplug dryer or disconnect power.
2.
Disconnect the wires from the compo-
nent you are testing.
3.
Set the ohmmeter to the R x 1 scale.
4.
Thermal Cutoff and High-Limit Thermostat:
Touch the ohmmeter test lead to the com-
ponent terminals. The meter should indi-
cate continuity (0
Ω
).
5.
Set the ohmmeter to the R x 100K scale.
6.
Inlet Thermistor:
Use the following chart
to check the thermistor:
Inlet Thermistor
High-Limit Thermostat Terminals
Thermal Cutoff (TCO)