Haier MRV5-H - 10.7 MRV-Link Troubleshooting

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10.4 Wiring Figure
Indoor 2
Indoor 1
Outdoor 1O utdoor 2 Outdoor 3
Outdoor 4
P Q
CN34
CN34
P Q A B C P Q A B C P Q A B C P Q A B C
Indoor 3
P Q
CN34
Indoor 4
P Q
CN34
Indoor n
P Q
CN34
IGU10
5V
IGU10I GU10
IGU11
Only one end of the shield
should be connected to the earth.
The shield of P&Q
communication cable
Note:
If the system unit adopts Zigbee wireless communication, it must adopt wireless and wired hybrid mode.
The PQ cable must be connected to the IDU which one with the smallest address number
.
10.3 MRV-Link Specication
Item Model BOM No. Spare Part Code Indoor PCB Connection Terminal
Main IDU Wireless module IGU09 AA9VH2B3P 0151800313C CN34
Slave IDU Wireless Module IGU10 AA9VH1B3P 0151800314B CN34
Repeater IGU11 AA9VH0B3P 0151800321B /
P Q
IGU09 IGU10