Heiko M3T070-D1 Installation Manual page 32

Test running
Status
M3T070-D1 is with 3 green LED that means 3 indoor units,M5T100-D1 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.