LGRED Installation Manual

84
MULTI F / MULTI F MAX with LGRED Outdoor Unit Installation Manual
Due to our policy of continuous product innovation, some specifications may change without notification.
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MULTI
F
MAX
MULTI
F
WITH
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) is/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 LMU361, 421, 480HHV.
12 43
12 43
ON
OFF
5
5
Figure 113: LMU180-240-300HHV Wiring Error
Check DIP Switch Setting.
One (1)
Second
LED 1
(Red)
LED 2
(Green)
Three (3)
Blinks
Two (2)
Blinks
One (1)
Second
One (1)
Second
One (1)
Second
Two (2)
Blinks
Three (3)
Blinks
Figure 114: LMU361-421-480HHV Wiring Error
Check Example.
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 1Ø
Model
Multi F with LGRED
LMU180HHV,
LMU240HHV,
LMU300HHV,
Multi F MAX with LGRED
LMU361HHV,
LMU421HHV,
LMU480HHV
Step 1 (A) 12 22
Step 2 (A) 10 21
Power
Consumption
and Current
Normal
Time
Figure 115: Wiring Error Check Example.
12 43
12 43
ON
OFF
5
5
12 43
12 43
ON
OFF
5
5
Step 1 Step 2
Figure 116: Reducing Power Consumption Chart.
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• Reduced Power Consumption reduces outdoor unit capacity.
• Only the first four DIP switches are functional on the LMU361, 421,
480HHV.
FINAL INSTALLATION PROCEDURES
Figure 117: LMU180-240-300HHV Reducing Power Consumption DIP
Switch Settings.
1234
56
ON
OFF
Figure 118: LMU361-421-480HHV Reducing Power Consumption DIP
Switch Settings.
1234
56
ON
OFF
1234
56
ON
OFF
Step 1
Step 2