LG ARUB076BT2 Installation Manual page 72

Test Run
CAUTION
1. Guaranteed Temperature range(Error occurs out of guaranteed temperature range)
IDU : 20~32°C(68~90˚F) (buffer
ODU : 10~38°C(10~38˚F) (buffer
2. Set IDU wired remote controller temperature sensor setting as 'IDU'.
3. Make certain that IDU doesn't run with thermo off mode during operation.
[ Error contents about auto refrigerant charging function ]
1. : Temperature Range Error (In case that IDU or ODU is out of range)
2. : System Unstable Error (In case, After 45 min operating the system, it does not be stable)
How to Cope with Result of Refrigerant checking
1. If the temperature is not in guaranteed Temperature range, the system will not execute Refrigerant check-
ing and the system will be OFF.
2. Excess of Refrigerant(619)
After remove the 20% of calculated total refrigerant, recharge the refrigerant by using Refrigerant Auto
Charging Function.
3. Scarcity of Refrigerant(629)
Charge the refrigerant by using Refrigerant Auto Charging Function.
4. Impossible to Judge(639)
IF the system is not in order, check the other problem except refrigerant.
72 72 Outdoor Unit Outdoor Unit
1°C(33.8˚F))
1°C(33.8˚F))