LG Electronics LCN240CP service manual Troubleshooting CH32, CH33, Constant

Troubleshooting Guide

TroubleshootingCH32,CH33

Display	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.

105°C	COMP OFF
(221°F)
95°C	LEV OPEN/Hz down
(203°F)	LEV OPEN/Hz down
90°C
(194°F)	NORMAL
	Inverter

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.

105°C	COMP OFF
(221°F)
90°C	LEV OPEN
(194°F)	LEV OPEN
80°C
(176°F)	NORMAL

Constant

•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)

44Ceiling Cassette Air Conditioner