LG LCN240CP Service Manual page 44

Troubleshooting Guide
Troubleshooting CH32, CH33
Display
Title
code
D-pipe (Inverter)
32 temp. high
(105°C(221°F) )
D-pipe (Constant)
temp. high
33
(105°C(221°F) )
105°C
(221°F)
LEV OPEN/Hz down
95°C
(203°F)
LEV OPEN/Hz down
90°C
(194°F)
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.
44 Ceiling Cassette Air Conditioner
Cause of error
• Discharge sensor
(Inverter) temp. high
• Discharge sensor
(Cons.) temp. high
COMP OFF
NORMAL
Inverter
Check point & Normal condition
• 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.
105°C
COMP OFF
(221°F)
90°C
LEV OPEN
(194°F)
LEV OPEN
80°C
(176°F)
• 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)
NORMAL
Constant