LG UM30F Installation Manual page 60

INSTALLATION OF DECORATIVE PANEL(ACCESSORY)
60
Test operation
During the TEST OPERATION, the unit
operates in cooling mode at high speed fan,
regardless of room temperature and resets in
18 minutes. During test operation, if remote
controller signal is received, the unit operates
as remote controller sets. If you want to use
this operation, Press and hold the ON/OFF
button for 3~5 seconds, then the buzzer
sound 1 'beep'. If you want to stop the
operation, re-press the button.
Self-Diagnosis Function
This unit has an inbuilt error diagnosis
capability. Error is displayed by 'RED'
Operation Lamp. Please contact your
serviceman/dealer in such a situation
Ex ) CH 132
1.6 s
0.6 s
XXO XOX
ON/OFF
On/Off
button
4 s
OXX
Operation lamp
Evaluation of the performance
Operate the unit for 10~15 minutes, then
check the system refrigerant charge:
1
Measure the pressure of the gas side
service valve.
2
Measure the air temperature from inlet and
outlet of air conditioner.
3
Ensure the difference between the inlet
and outlet temperature is more than 8 °C.
4
For reference; the gas side pressure at
optimum condition is shown on table
(cooling)
The air conditioner is now ready to use.
Discharge air
Outside
Refrigerant ambient
TEMP.
R-410A 35 °C (95 °F)
NOTE
If the actual pressure is higher than
shown, the system is most likely over-
charged, and charge should be removed. If
the actual pressure are lower than shown,
the system is most likely undercharged,
and charge should be added.
Intake temperature
Discharge
temperature
The pressure of
the gas side
2
8.5~9.5 kg/cm G
(120~135 P.S.I.G.)