Outdoor unit
Manifold valve
Vacuum pump
Pressure
gauge
Open
Close
* The feature can be changed according
a type of model.
1
Fix the outdoor unit with a bolt and nut
(ø10 mm) tightly and horizontally on a con-
crete or rigid mount.
2
When installing on the wall, roof or
rooftop, anchor the mounting base secure-
ly with a nail or wire assuming the influ-
ence of wind and earthquake.
3
If the vibration of the unit is transmitted to
the pipe, secure the unit with an anti-vibra-
tion rubber.
Settlement of outdoor unit
Bolt
Tubing connection
Operate the unit for 15~20 minutes, then
check the system refrigerant charge:
1
Measure the pressure of the gas side serv-
ice 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.
* The feature can be changed according
a type of model.
for R410A
for R32
Evaluation of the performance
Discharge
temperature
Discharge air
Inlet temperature
Outdoor
Temperature
Pressure of Service
Valve (Gas)
35 °C (95 °F)
8.5~9.5 kgf/cm
2
G
(120~135 psi)
Outdoor
Temperature
Pressure of Service
Valve (Gas)
20 °C (68 °F) ~
35 °C (95 °F)
8.4~9.5 kgf/cm
2
G
(120~135 psi)
35 °C (95 °F) ~
40 °C (104 °F)
9.5~10.5 kgf/cm
2
G
(135~150 psi)
40 °C (104 °F) ~
45 °C (113 °F)
10.5~11.6 kgf/cm
2
G
(150~165 psi)
45 °C (113 °F) ~
48 °C (118 °F)
11.6~12.3 kgf/cm
2
G
(165~175 psi)
- Connect a low-pressure gauge manifold
hose to the charge port on the gas side serv-
ice valve.
- Open the gas side service valve halfway and
purge the air in the manifold hose using the
refrigerant.
- Close the liquid side service valve(all the
way).
- Turn on the unit's operating switch and start
the cooling operation.
- When the low-pressure gauge reading
becomes 1 to 0.5 kg/cm
2
G(14.2 to 7.1
P.S.I.G.), fully close the gas side valve and
then quickly turn off the unit. Now Pump
Down procedure is completed, and all refrig-
erant is collected into the outdoor unit.
Heating Only Mode
Heating Only Mode switching
function setup
1
Supply the power to the unit with no func-
tions active.
2
Enter the Installer Code and set the code
to 47.
3
Press
to select the code No.47 then,
check if buzzer beeps.
4
Cut the power to the unit.
5
Turn back on the power to the unit after 30
seconds.
Heating Only Mode switching
function disable setup
1
Supply the power to the unit with no func-
tions active.
2
Enter the Installer Code and set the code
to 48.
3
Press
to select the code No.48 then,
check if buzzer beeps.
4
Cut the power to the unit.
5
Turn back on the power to the unit after 30
seconds.
* How to enter the installer mode
Press Reset Button and ‘A’ Button (
)
* How to set the code
Set the code you want by pressing TEMP
button (
_
) and press
.
_
10 digit
1 digit
Press
SETUP
A
Pump Down Procedure
Test Running
- Check that all tubing and wiring are properly
connected.
- Check that the gas and liquid side service
valves are fully open.
1
Remove the battery cover by pulling it
according to the arrow direction.
2
Insert new batteries making sure that the
(+) and (–) of battery are installed correctly.
3
Reattach the cover by pushing it back into
position.
- If you press and hold the On/Off button for
3 – 5 seconds instead of 6 seconds, the unit
will switch to the test operation.
- In the test operation, the unit blows out
strong air for cooling for 18 minutes and then
returns to the factory default settings.
This is performed when the unit is relocated
or the refrigerant circuit is serviced.
Pump Down means collecting all refrigerant into
the outdoor unit without the loss of refrigerant.
Test operation
Prepare remote controller
Pump Down
It m
may cause explosion or injury.
After pump down, power must be turned
off before removing the pipe. When
operating this product without connecting
the pipe, there will be high pressure
insidce the compressor due to the entry of
air, possibly causing explosion or injury.
Be sure to perform Pump Down procedure
in the cooling mode.
NOTE
NOTE
• Use 2 AAA(1.5 V) batteries. Do not use
rechargeable batteries.
• Remove the batteries from the remote
controller if the system is not used for a
long time
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 under-
charged, and charge should be added.
NOTE
WARNING
!
SMART DIAGNOSIS
Diagnosis of operating information
1
Enter the Installer Code and set the code
to 57.
2
Click the “Receive” button on the main
screen of LG AC Smart Diagnosis App on
your smart phone.
3
Press
and hold your smart phone close
to the indoor unit.
4
Receive the buzzer beeps from indoor unit
with your smart phone.
5
The diagnosis of operating information will
be displayed on the screen of your smart
phone.
Diagnosis of error information
1
Enter the Installer Code and set the code
to 58.
2
Click the “Receive” button on the main
screen of LG AC Smart Diagnosis App on
your smart phone.
3
Press
and hold your smart phone close
to the indoor unit.
4
Receive the buzzer beeps from indoor unit
with your smart phone.
5
The diagnosis of operating information will
be displayed on the screen of your smart
phone.
* How to set the code
Set the code you want by pressing TEMP
button (
_
) and press
.
_
10 digit
1 digit
- Once the function is set up, Cooling,
Dehumidification Auto Change over can-
not be used.
- Once the function is disable it will return
to its normal state.
- Code cannot be entered when it is in
operation mode. It must be OFF state to
enter code.
- Even if able to enter code in ON state, it
won’t function if the code is not entered
in OFF state.
- At Heating Only Mode, if the product
gets turned off while the wireless
remote control is set at other than heat-
ing / blowing, the product will not get
turned back on. Turn off the product after
the wireless remote control is set at
heating / blowing and then turn back on.
- Be sure to keep ambient noise to a mini-
mum or the smart phone may not cor-
rectly receive the buzzer beeps from the
indoor unit.
- Initialization of diagnosis data may take
approximately 1 minute after supplying
the AC power .
- The code No. 57 is used for confirming
the diagnosis data which is updated on
while the indoor unit is operating
- The code No. 58 is used for confirming
the diagnosis data which is the occurred
time of Error Code.
* How to enter the installer mode
Press Reset Button and ‘A’ Button (
)
A
Press
SETUP
NOTE
NOTE
14
13
