LG LFX25974 Series - Page 58

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12-3 Check C
C1. Harness Connection Check
C2. Capacitor Specifications
C3. Compressor Check
- Step 1. Power off. Step 2. Check capacitor spec. (table1). Step3. Check resistance of point A
Step 4. Check wire harness (INF ohm). Step 5. Check resistance at point B. Step 6. Point D.
Check Process
Power
off
Resistance
at Point A
6~8ohm
Harness
Connecting
OK
Problem
A~B
Check
Capacitor
Spec.
Resistance
at Point B
6~8ohm
Resistance
at Point D
6~8ohm
Replace
Compressor
Problem
B~D
Check
wiring to
compressor
Y
N
N
Y
Y
Y
N
N
Check Compressor
terminals
Harness
Problem
Y
N
Y
- Measure the resistance at each point except point C
- Dead short check: measure the resistance between power line in compressor and earth ground in refrigerator (Inf. Ohm)
Dead short check
P
C
Multi
Tester
Resistance
FC75LBNA
Co
Po
N/C
Capacitor Spec.
450V, 18μF±5%
Po: Power
Co: Common
N/C: Open terminal
A
B
C
D
Multi
Tester
Multi
Tester
Multi
Tester
Earth
Hermetic terminal
Caution : Turn off power during check C
* Because of ambient temperature or operating
situations, the values shown can have a slight
deviation.