Multi F Four-Way Ceiling Cassette Service Manual

- 64 -

Only for training and service purposes

LGE Internal Use Only

Part 5. Trouble Shooting

Display

code

Title Cause of error Check point & Normal condition

High temperature in

Discharge pipe of the

inverter compressor

• Overload operation

(Outdoor fan constraint,

screened, blocked)

• Refrigerant leakage

(insufficient)

• Poor INV Comp

Discharge sensor

• LEV connector displaced

/ poor LEV assembly

• Check outdoor fan constraint/ screened/ flow

structure

• Check refrigerant leakage

• Check if the sensor is normal

• Check the status of EEV assembly

CN- DISCHARGE

(BLACK 3Pin Connector)

Replace the Thermistor

Yes

WARNING

Before checking PCB or each outdoor electric parts, wait for 3 minutes after the power is off. When measuring at standby state

of power supply, after checking the measurement mode of the meter, be careful of the short-circuits with other parts.