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

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LG Electronics LCN240CP service manual Troubleshooting CH32, CH33, Constant

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