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F
MULTI
F
MULTI
MAX
Mode Lock
Prevents mixed mode operation (mode change) in applications
where only one mode is necessary.
1. Shut power down to the system.
2. For Only Cooling Mode Lock, set only DIP Switches 1 and 2 to
ON. For Only Heating Mode Lock, set only DIP Switches 3 and 4
to ON.
3. Turn power on to the system.
settings and functions.
Night Quiet Mode with Mode Lock
Lowers the operation sound of the outdoor unit by changing the
compressor frequency and fan speeds, as well as locks the mode of
operation. Changing modes can cause a change in compressor fre-
quency, which would cause problems with the setting. As such, if this
mode is used, it is locked in either cooling or heating. The function
is rarely, if ever, used. Night quiet mode initiates eight (8) hours after
the highest outdoor air temperature is measured, then is active for
nine (9) hours.
1. Shut power down to the system.
2. For Step 1, set only DIP Switches 2 and 4 to
ON. For Step 2, set DIP Switches 1 and 3 to
ON.
3. Turn power on to the system.
• If compressor frequency and fan speed are
accordingly.
• Night Quiet Mode can only be used when system
is in cooling operation.
• Change the DIP switches if Night Quiet Mode is
no longer desired.
• If indoor unit operation is set by the fan speed
• Only the first four DIP switches are used to set
settings and functions.
FINAL INSTALLATION PROCEDURES
Figure 127: LMU481-541-601HV Mode Lock DIP Switch Settings.
Only Cooling Mode Lock
ON
OFF
1
Figure 129: LMU481-541-601HV Night Quiet Mode with Mode Lock DIP Switch Settings.
(Cooling)
ON
OFF
1
Table 40:
Type
Multi F
Multi F MAX
Due to our policy of continuous product innovation, some specifications may change without notification.
©LG Electronics U.S.A., Inc., Englewood Cliffs, NJ. All rights reserved. "LG" is a registered trademark of LG Corp.
Figure 126: LMU183-243-303-363HV Mode Lock DIP Switch Settings.
Only Cooling Mode Lock
ON
OFF
1
2
3
4
1
2
3
4
2
3
4
5
6
Figure 128: LMU183-243-303-363HV Night Quiet Mode with Mode Lock
DIP Switch Settings.
(Cooling)
ON
OFF
1
2
3
4
1
2
3
4
2
3
4
5
6
Model Number
Night Quiet
LMU183HV
ODU DIP Switch
LMU243HV
ODU DIP Switch
LMU303HV
ODU DIP Switch
LMU363HV
ODU DIP Switch
LMU481HV
ODU DIP Switch
LMU541HV
ODU DIP Switch
LMU601HV
ODU DIP Switch
Only Heating Mode Lock
ON
OFF
1
2
3
5
1
2
3
5
Only Heating Mode Lock
ON
OFF
1
2
3
4
Step 2: Reducing Saving Power Consump-
ON
OFF
1
2
3
5
1
2
3
5
Step 2: Reducing Saving Power Consump-
ON
OFF
1
2
3
4
Standard Cooling
Step 1
Sound Level (dBA)
(dBA)
48
46
49
46
51
49
51
49
53
49
53
49
56
51
5
4
4
5
5
6
4
5
4
5
5
6
Step 2
(dBA)
44
44
46
46
46
46
47
89
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