11-2 Sheath Heater
Function Sheath heater is a part for defrost. All heating wire is connected to only one line. To check if
the part is defective, check the resistance.
How to
Measure
Set a ohmmeter connect to The 2 housing pin.
Measure the 2 pin connected to Sheath Heater.
If the ohmmeter indicate (V°øV)/Watt=R is good condition,
ex) when Watt 300W Voltage 120V R 120x120 300 48= , = , =( )/ = Ω
But if the ohm meter indicate infinity the Sheath heater is bad.
Standard
Sheath heater (at all temperature)
Tes t P oi nt
(1) to (2)
Result
45 ~ 51Ω
(1) (2)
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