Test 2 Thermistor Test - LG DLE2512W Service Manual

Test 2
Thermistor Test --- Measure with Power Off
Caution
Trouble Symptom
Measurement Condition
Take the 6 pin 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.
Short with metal to the 6 pin connector's
Pin (Blue Wire) and
Pin (Orange Wire) 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)
NO
YES
7.7
6.2
5.2
4.3
24
• Check if Control
and the 6 pin
connector are
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