LG Electronics LG3ZMSS316 Owners Guide

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Part 5. Trouble Shooting

- 73 -

Only for training and service purposes

LGE Internal Use Only

Display

code

Title Cause of error Check point & Normal condition

High temperature in Dis-

charge pipe of the inverter

compressor

• Overload operation (Out-

door fan constraint,

screened, blocked)

• Refrigerant leakage (in-

sufficient)

• Poor INV Comp Dis-

charge 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

CN_TH3

(RED 4Pin Connector)

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.

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LG Electronics LG3ZMSS316 Quad Zone Mini Split System with 30,000 BTU, Integrated Base Pan Heater, Auto