Wiring Error Check; Reducing Power Consumption; Reducing Power Consumption Current Levels; Reducing Power Consumption Chart - LG MULTI F Series Installation Manual
Multi-zone heat pump systems with lgred 1.5 to 3.5 tons
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- Engineering manual (392 pages) ,
- Installation manual (104 pages) ,
- Owner's manual (234 pages)
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F
MULTI
WITH
F
MULTI
MAX
Wiring Error Check
Use to verify if wiring is properly installed.
1. Shut power down to the system.
2. Set DIP Switch 2 to ON.
3. Turn power on to the system.
4. Check if the Red and Green LEDs on the outdoor unit PCB are ON (indicate indoor
units are in forced operation mode).
5. If the wiring is correctly installed, the Green LED will light up. If the wiring is incorrect-
ly installed, the Red and Green LEDs will blink, indicating which part of the system is
in error.
• Red LED = Piping Number
• Green LED = Wiring Number (Room)
Example: If the Red LED blinks twice and the Green LED blinks three times, the second
piping to the third room is in error (see right).
• If the indoor unit(s) are not communicating properly to the outdoor unit, the Wiring Error
Check cannot operate correctly.
• Only the part of the system in error will be displayed. System will operate correctly after
the error is fixed.
• If outdoor and indoor temperatures are too low (ex.: winter), the wiring error check
function will not operate (Red LED is ON).
• Turn DIP Switch 2 to OFF after finishing (Normal Operation setting).
• Only the first four DIP switches are functional on the LMU360, 420HHV.
Reducing Power Consumption
Enables more efficient system operation by reducing the maximum power consumption
value (reducing the MCA).
1. Shut power down to the system.
2. For Step 1, set only DIP Switch 3 to ON.
3. For Step 2, set only DIP Switch 4 to ON.
4. Turn power on to the system.
Table 39: Reducing Power Consumption Current Levels.
Phase
Model
Multi F with LGRED
LMU180HHV,
LMU240HHV,
LMU300HHV
Step 1 (A)
12
Step 2 (A)
10
• Reduced Power Consumption reduces outdoor unit capacity.
• Only the first four DIP switches are functional on the LMU360,
420HHV.
FINAL INSTALLATION PROCEDURES
1Ø
Multi F MAX with LGRED
LMU360HHV,
LMU420HHV
22
21
Figure 122: LMU360-420HHV Reducing Power Consumption DIP Switch Settings.
ON
OFF
1
2
3
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 117: LMU180-240-300HHV Wiring Error
Check DIP Switch Setting.
Figure 118: LMU360-420HHV Wiring Error Check
Example.
ON
OFF
Figure 119: Wiring Error Check Example.
LED 1
(Red)
LED 2
(Green)
Figure 120: Reducing Power Consumption Chart.
Power
Consumption
and Current
Figure 121: LMU180-240-300HHV Reducing Power Consumption DIP
Switch Settings.
Step 1
ON
OFF
1 2
3
4
1 2
3
4
Step 1
ON
OFF
4
5
6
7
8
9 10
ON
OFF
1 2
3
4
5
5
1 2
3
4
1
2
3
4
5
6
7
8
Two (2)
Three (3)
Blinks
Blinks
One (1)
One (1)
Second
Second
Three (3)
Blinks
One (1)
Second
Normal
Step 2
ON
OFF
5
1 2
3
5
1 2
3
Step 2
1
2
3
4
5
6
7
8
9 10
Two (2)
Blinks
One (1)
Second
Time
5
4
4
5
9 10
85
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