LG A2UQ166FA0, Service Manual, Page: 187 / 238

Service Manual 187
Troubleshooting Guide
10) Troubleshooting CH32, CH33
LEV Openness
(Pulse)
COMP Frequency
(Hz)
Toff(105)
°
C
T1(90)
°
C
T2(95)
°
C
OFF Normal
OFF Control Normal
Normal
Normal
D-Pipe temp.
32
33
D-pipe (Inverter)
temp. high
(105°C )
D-pipe (Constant)
temp. high
(105°C )
• Discharge sensor
(Inverter) temp. high
• Discharge sensor
(Cons.) temp. high
• Check the discharge pipe sensor for INV.
• Check the install condition for over load.
• Check the leakage of refrigerant.
• Check the SVC V/V open.
• Check the discharge pipe sensor for Cons.
• Check the install condition for over load.
• Check the leakage of refrigerant.
• Check the SVC V/V open.
Display
code
Title Cause of error Check point & Normal condition
Check Point
• CH 32
1. Check the install condition for over load.
2. Check the SVC V/V open.
3. Check the leakage of refrigerant.
• CH 33
1. Check the install condition for over load.
2. Check the SVC V/V open.
3. Check the leakage of refrigerant.
4. Check the constant compressor. (same with CH21)