DC Inverter Multi
VRF Service Manual
131
2) When there is only one outdoor module and also, the qty of indoor units is more than 16 but less than 32, one
patch board shall be added to outdoor unit, which can connect up to 16 sets of indoor units. The corresponding port of
patch board is CN1.
ON DIP
A
B
A
B
CN3
CN2
CN1
Address code S2
Pinboard 2
ON DIP ON
ON DIP
ON
SINGLE MODULAR
A
B
A
B
A
B
2
2
A
B
A
B
4
Inverter drive
plate inside
the unit
Capacity code SW1
Qty code
SW2
Address
code SW3
Mian board
of out unit
Communication
inerface
Communication
inerface
Communication
inerface
Communication
inerface
Communication
inerface
CN11
CN12
CN13
CN16
CN17
CN18
CN1 or
COM-OUT3
CN3
CN2
CN1
Address code S2
Pinboard 1
No.1 No.2
No.n(16max)
Indoor to indoor communiction
No.1 No.2
No.n(16max)
Indoor to indoor communiction
Communication between
the indoor and the outdoor
Communication between
the indoor and the outdoor
Communication interface port
CN1 of pinboards
Qty of indoor unit is less than or equial to 16
Qty of indoor unit is less than or equial to 16
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