LG RC7055*P*Z, Service Manual

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DIAGNOSTIC TEST 10
Test 6 Thermister check
Trouble Symptom : Poor drying performance(over-drying or no drying). Abnormal
thermistor operation.
Measurement condition : Power cord is unplugged.
Dryer
Temperature
• Check harness & connection
Dryer
Temperature
Resistance
TH-Heater
250~180k Ω
180~113k Ω
TH-Drum
19~111k Ω
11~8k Ω
8~5k Ω
TH-Drum
19~111k Ω
11~8k Ω
8~5k Ω
Resistance
Remark
TH1
113~75k Ω
75~50k Ω
50k
Ω
TH2
5~4k Ω
4~2.5k Ω
2.5k Ω
10
20~30
30~40
Dryer
Temperature
40~50
50~60
60
With White9,White 6 disconnected from
Controller, check
1) High temperature thermistor ( Wire
color : White) White 6 pin white ~White
6 pin red resistance ranges table data
according to surrounding temperature.
2) Low temperature thermistor ( Wire
color : Blue) White 9 pin Blue ~White 9
pin white resistance ranges table data
according to surrounding temperature.
• Check and replace
thermistor.
1) Check disconnected
Housing or severed
Wire.
2) Check the resistance
of thermistor.
3) Replace controller
and then recheck,
if anything else
occurs.
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