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CAUTION
When P/Q or P/Q/E communication is used, the indoor units need to be powered uniformly.
Either P/Q, P/Q/E communication or HyperLink (M1M2) communication can be selected. If it is required
for indoor units to have independent power supplies, then HyperLink (M1M2) communication must be
selected.
Use only shielded cables for P/Q or P/Q/E communication. Otherwise, the indoor unit and outdoor unit
communication may be affected.
A matching resistor needs to be added to the last indoor unit on the PQ (in the accessory bag of the
outdoor unit).
①
X1/X2 communication cable connection
The X1X2 communication wiring is mainly connected to the wired controller to achieve one controller per
indoor unit and two controllers per indoor unit. The total length of the X1X2 communication wiring can reach
200 meters. Please use shielded wires, but the shield layer cannot be earthed. X1 and X2 ports are located
at terminal block "CN6" of the main control board. There is no distinction between negative and positive
electrodes. For details, see the following figure:
CN6
X1X2
L1
L2
L3
CN6
X1X2
L1 ≤ 200m, L2+L3 ≤ 200m.
Two controllers to one indoor unit
Main control board
One controller to one indoor unit
Main control board
(Master-slave wired
controller needs to be set.
For details, see the wired
controller manual.)
CAUTION
Two wired controllers of the same model can be used to control one indoor unit at the same time. In this
case, need to set one controller to be the master and the other to be the slave. For details, see the wired
controller manual.
