Test 2 Thermistor Test - LG DLE0442W Service Manual

Test 2
Thermistor Test --- Measure with Power Off
Caution
Trouble Symptom
Measurement Condition
Take 6pin Connector from
the Controller.
Table 1. Resistance for Thermistor Temperature.
Air TEMP. [°F (°C)]
50°F (10°C)
60°F (16°C)
70°F (21°C)
80°F (27°C)
Before measuring resistance, be sure to turn Power off, and do voltage discharge.
(When discharging, contact the metal plug of Power cord with the Ground.)
During Diagnostic Test, tE1 and tE2 Error occur.
During operation, Heater would not turn off, or remains on.
Difference between actual and sensed temperature is significant.
After turning Power off, measure the resistance.
Check if resistance is in the range of Table 1
when measuring 6pin connector Pin
(Blue wire) and Pin
to Controller.
Check if resistance is in the range of Table 1
when measuring resistance between
terminals after separating Harness
From Thermistor assembly Connector.
Check Harness-linking connector.
RES. [kΩ] Air TEMP. [°F (°C)] RES. [kΩ] Air TEMP. [°F (°C)] RES. [kΩ]
18.0 90°F (32°C)
14.2 100°F (38°C)
11.7 110°F (43°C)
9.3 120°F (49°C)
(Red wire) connected
NO
YES
7.7
6.2
5.2
4.3
18
• Check if Control
and 6Pin
connector is
YES
properly
connected.
• Replace
Controller.
• Replace
NO
Thermistor.
130°F (54°C)
140°F (60°C)
150°F (66°C)
160°F (71°C)
2.9
3.0
2.5
2.2