Test running
Status
3U55S2SR3FA and 3U70S2SR3FA are with 3 green LED that means 3 indoor units,4U75S2SR3FA and 4U85S2SR3FA with 4 green
LED means 4 indoor units. 5U90S2SS3FA and 5U105S2SS3FA with 5 green LED means 5 indoor units. If one LED keep lighting that
means the corresponding indoor unit has good communication with outdoor unit. If one LED is not lighting, that means there is no
communication between indoor and outdoor.unit has good commmunication with outdoor unit. If one LED is not lighting, that means
there is no communication between indoor and outdoor.