Troubleshooting _ 29
4-6. COMPONENT TESTING PROCEDURES
Part Name
Image
Description
[ Electric ]
Thermistor
Thermostat
THERMISTOR
THERMOSTAT1
85˚C, 25A
Thermal cut-Off
•
Thermistor resistance 10K Ω @ 25°C (77°F)
•
Thermostat 1 resistance < 1Ω
Thermostat
heater
THERMOSTAT3
THERMOSTAT2
HEATER
160˚C, 25A
thermal cut-off
179/99˚C, 25A
Hi - limit
[SINGLE] 240V, 5300W
[DUAL] 240V, 3700~1500W
•
Thermostat 3 resistance < 1Ω
- If resistance is infinite, replace thermostat 3.
•
Thermostat 2 resistance < 1Ω
- If resistance is infinite, replace thermostat 2.
•
[DUAL] Heater resistance 13Ω (PIN 2-3) Heater.
•
Resistance 34Ω (PIN 1-2)
- If resistance is infinite, replace heater.
•
[SINGLE] Heater resistance 10Ω (PIN 1-3)
- If resistance is infinite, replace heater.
•
Measure resistance on the following terminal.
Door Switch
Door switch
125V, 10A
125V, 10A
1.
Door switch: Off
- Terminal: “COM” - “NC” (1-3) < 1Ω
- Terminal: “COM” - “NO” (1-2): ∞ Ω
2.
Door switch: On
- Terminal: “COM” - “NC” (1-3): ∞ Ω
- Terminal: “COM” - “NO” (1-2) < 1Ω
