LG MULTI F L4L48W07121224 Installation Manual page 419

F
MULTI
WITH
F
MULTI MAX
Location of DIP Switches on Multi F and Multi F MAX Outdoor Units
Figure 109: Multi F with LGRED (LMU180-240-300HHV)
Outdoor Unit DIP Switch Locations.
LMU180 / 240 / 300HHV
(18 / 24 / 30kBtu/h)
5
SW1
Forced Cooling Operation Function
Use to add refrigerant to the system when outside ambient temperatures are cool (ex.: winter).
1. Shut power down to the system.
2. Set DIP Switch 1 to ON.
3. Turn power on to the system.
• If the green LED light on the outdoor unit PCB is ON, it indicates the compressor is OFF due to low pressure in the system.
• Turn DIP Switch 1 to OFF after finishing (Normal Operation setting).
• Only the first four DIP switches are functional on the LMU361, 421, 480HHV.
Figure 111: LMU180-240-300HHV Forced Cooling DIP Switch Setting.
ON
OFF
1 2
1 2
FINAL INSTALLATION PROCEDURES
3 5
5
3 4
3 4
5
Due to our policy of continuous product innovation, some specifications may change without notification.
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Figure 110: Multi F MAX with LGRED (LMU361-421-480HHV) Outdoor Unit
DIP Switch Locations.
LMU361HHV / LMU421HHV / LMU480HHV
(36 / 42 / 48 kBtu/h)
4. Verify that the Red LED on the outdoor unit PCB is ON (indicates
indoor units are in forced cooling operation).
5. Add refrigerant.
Figure 112: LMU361-421-480HHV Forced Cooling DIP Switch Setting.
ON
OFF
1
6
DIP_SW01D
2 3 4 5 6
83