How To Check Insulation Resistance Between The Compressor And Panel; How To Check The U, V, And W Phase Resistance - LG THERMA V AHNW16606B0 Service Manual

n How to check the insulation resistance between the compressor and panel
C/BoxSash
1. Turn the switch of the tester to "Resistance" mode and check th eresistance
2. Measure the resistance between the terminals.
3. "0Ω" means the short of compressor phase. (Replace the compressor)
4. Refer to the compressor resistance standards.
5. I f any disorder is found, measure the line resistance between the terminals of the comperssor as
shown below.
6. If the compressor is found to be normal, any compr essor connection wire may have a fault.
n How to check the U, V, and W phase resistance
Compressor
terminals
Model
U-V
Windings
Resistance V-W
( at 25℃ )
W-U
Measure the resistance between a compressor terminal and
Compressor
panel.
terminals
Measure the line resistance between the compressor termi-
nals.
GKT141MAC
1.040 ±7% Ω
1.040 ±7% Ω
1.040 ±7% Ω
Comp Pipe
GKT176MAB
1.125±7% Ω
1.125±7% Ω
1.125±7% Ω
- 80 -
Insulation
Terminal
Resistance
U-panel ≥ 10MΩ
V-panel ≥ 10MΩ
W-panel ≥ 10MΩ
GJT240MAA
0.628 ±7% Ω
0.628 ±7% Ω
0.628 ±7% Ω