When checking components, turn the power off and discharge voltage.
COMPONENT TESTING INFORMATION
5
!
CAUTION
FOR LG TECHNICIAN
Component
Test Procedure
Check result
Remark
1. Thermal cut off
•
Check Top Marking:
N140
Measure resistance of terminal
to terminal
Open at 284 ±
9
°F
(140 ± 5°C)
Same shape as outlet thermostat.
If thermal fuse is open must
be replaced
Resistance value
≒
Continuity (250°F
↓
) < 1
Ω
•
Heater case-
Safety
•
Electric type
2. Hi limit Thermostat
(Auto reset)
Measure resistance of terminal
to terminal
Open at 257 ± 9°F
(125 ± 5°C)
Close at 2
0
1 ±
12
°F
(94 ± 7°C)
Resistance value
≒
∞
Resistance value < 5
Ω
•
Heater case -
Hi limit
•
Electric type
3. Outlet Thermostat
•
Check Top Marking:
N85
Measure resistance of terminal
to terminal
Open at 185 ±
9
°F
(85 ± 5°C)
Same shape as thermal cut off.
②
Close - Not recovery
Resistance value
≒
∞
Resistance value < 5
Ω
•
Blow housing -
•
ElectricType
•
GasType
Safety
4. Lamp holder
Measure resistance of terminal
to terminal
Resistance value:
80
Ω
~ 100
Ω
6. Idler switch
Measure resistance of the
following terminal:
COM - NC
1. Lever open
Resistance value < 1
Ω
2. Lever push (close)
Resistance value
≒
∞
5. Door switch
Measure resistance of the
following terminal
1) Door open
Terminal: COM - NC (1-3)
Terminal: COM - NO (1-2)
2) Door closed
Terminal: COM - NC (1-3)
Terminal: COM - NO (1-2)
Resistance value < 1
Ω
Resistance value
≒
∞
Resistance value
≒
∞
Resistance value < 1
Ω
∞
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