LG Electronics Troubleshooting LG Air Conditioner Error Codes: CH 32, CH 33, and More

				Part 4 Trouble Shooting
8) Troubleshooting CH32, CH33, CH40
Error	Title		Cause of error	Check point & Normal condition
code
	D-pipe (Inverter)			• Check the discharge pipe sensor for INV.
			• Discharge sensor	• Check the install condition for over load.
32	temp. high
	(105°C(221°F)	)	(Inverter) temp. high	• Check the leakage of refrigerant.
				• Check the SVC V/V open.
	D-pipe (Constant)			• Check the discharge pipe sensor for Cons.
			• Discharge sensor	• Check the install condition for over load.
33	temp. high
			(Cons.) temp. high	• Check the leakage of refrigerant.
	(105°C(221°F)	)
				• Check the SVC V/V open.
			• Open/Short
40	CT Sensor		• Soldered poorly	Ω
			• Internal circuit error	• Normal resistor : about 0

		D-Pipe temp.
Toff(105) °C			(221)	°F
T2(95) °C			(203)	°C
T1(90) °C			(194)	°C
COMP Frequency	Normal	Normal	OFF
(Hz)
LEV Openness	Normal	Normal	OFF Control
(Pulse)

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.

2If 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)

Service Manual 63