LG General Wall Mounted-Inverter Type - Troubleshooting CH32, CH33, CH40

Service Manual 63
Part 4 Trouble Shooting
8) Troubleshooting CH32, CH33, CH40
LEV Openness
(Pulse)
COMP Frequency
(Hz)
Toff(105) °C
T1(90) °C
T2(95) °C
OFFNormal
OFF ControlNormal
Normal
Normal
D-Pipe temp.
(221) °F
(194) °C
(203) °C
32
33
40
D-pipe (Inverter)
temp. high
(105°C(221°F) )
D-pipe (Constant)
temp. high
(105°C(221°F) )
CT Sensor
• Discharge sensor
(Inverter) temp. high
• Discharge sensor
(Cons.) temp. high
• Open/Short
• Soldered poorly
• Internal circuit error
• 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.
• Normal resistor : about 0 Ω
Error
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 40
1. If the resistance of the sensor is only , the check Is
possible.
2 If the error occurs again after the reset , change the
PCB.
• 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)