When checking components, turn the power off and discharge voltage.
COMPONENT TESTING INFORMATION
5
CAUTION
Component Test Procedure Check result Remark
1. Thermal cut off
• Check Top Marking:
N140
Measure resistance of terminal
to terminal
Open at 284
±
41°F
(140
±
5°C)
Auto reset -31°F (-35°C)
Same shape as outlet thermostat.
If thermal fuse is open must
be replaced
Resistance value
∞
Continuity (250°F
) < 1Ω
• 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 221
±
9°F
(94
±
7°C)
Resistance value
∞
Resistance value < 5Ω
• Heater case -
Hi limit
• Electric type
3. Outlet Thermostat
( Auto reset)
• Check Top Marking:
N85
Measure resistance of terminal
to terminal
Open at 185
±
41°F
(85
±
5°C)
Close at 167
±
41°F
(75
±
5°C)
Same shape as thermal cut off.
Resistance value
∞
Resistance value < 5Ω
• Blow housing -
Safety
• Electric type
4. LED Lamp Schematic: If the lamp is turned on
by connecting is normal.
It is not
measured by
multimeter
because V is
3.2V
th
6. Idler switch Measure resistance of the
following terminal:
COM - NC
1. Lever open
Resistance value < 1Ω
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 < 1Ω
Resistance value
∞
Resistance value
∞
Resistance value < 1Ω
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