LG RC9011 Series Service Manual page 27

DIAGOSTIC TEST
11
Test 6 Thermister check
Trouble Symptom : Poor drying performance(over-drying or no drying). Abnormal
Measurement condition : Power cord is unplugged.
RD4
Dryer Dryer
Temperature Temperature
10°C
20~30°C
30~40°C
thermistor operation.
WH6
With RED 4 , WHITE 6 disconnected from
Controller, check
1) High temperature thermistor ( Wire color :
Blue ) White 6 pin
resistance ranges table data according to
surrounding temperature.
2) Low temperature thermistor ( Wire color :
Blue ) Red 4 pin
resistance ranges table data according
to surrounding temperature.
• When measuring resitance of
Heater thermistor.
It range table data.
• When measuring resitance of
Low temperature thermistor.
It range table data.
• Check Harness
Resistance
TH-Heater TH-Drum TH-Drum
19~111kΩ 19~111kΩ
250~180kΩ 11~8kΩ 11~8kΩ
8~5kΩ 8~5kΩ
180~113kΩ
- White 6 pin
3
- Red 4 pin
2 4
Resistance
Dryer
Temperature
TH1
40~50°C
113~75kΩ
50~60°C
75~50kΩ
60°C
50kΩ
26
• Check and replace
Controller.
1) Check disconnected
4
2) Check the resistance
3) Replace controller
• Replace the thermistor
of heater.
• Replace the low
temperature thermistor.
TH2
5~4kΩ
4~2.5kΩ
2.5kΩ
Housing or severed
Wire.
of thermistor.
and then recheck,
if anything else
occurs.
Remark