LED Expansion valve
Number Condition Signal Opening (Pulse)
LED4
ON
MVD2
480
OFF 0
LED5
ON
MVD1
600
OFF 0
LED6
ON
MVS2
480
OFF 0
LED7
ON
MVS1
600
OFF 0
(a) When Outdoor Unit Compressor is Stopped (All Indoor Unit are Stopped).
Refer to
the table below for the expansion valve opening of CH unit when all the indoor units are stopped (including thermo-
OFF stoppage).
CH unit expansion valve
Indoor Unit Operation Mode (Remote Control Setting)
Cooling * Heating FAN
MVS1 0 0 0
MVS2 0 480 0
MVD1 0 0 0
MVD2 0 0 0
*: Dry setting is included as cooling operation.
(b) When Outdoor Unit Compressor is Operated.
Refer to the table below for the expansion valve opening of CH unit when outdoor unit compressors are operated.
Outdoor unit
Operation condition
CH unit
Expansion valve
Indoor Unit Operation Mode (Remote Control Setting)
Cooling * Heating
Cooling
Thermo-OFF *
Heating
Thermo-OFF
FAN
Cooling mode
MVS1 600 - 600 600 600
MVS2 480 - 480 480 480
MVD1 600 - 600 0 600
MVD2 480 - 480 0 480
Heating mode
MVS1 - 0 0 0 0
MVS2 - 0 480 480 0
MVD1 - 600 0 0 0
MVD2 - 480 0 0 0
Heat recovery
simultaneous mode
MVS1 600 0 0 0 0
MVS2 480 0 480 480 480
MVD1 0 600 0 0 0
MVD2 0 480 0 0 0
*: Dry setting is included as cooling operation.
5 Control system
110
SMGB0065 rev. 1 - 12/2010
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