40
②
BM2 introduction
Note:
Either indoor unit unlocked or the locked quantity different with actual connecting number, it cannot run.
CJ1:
Short it before power ON-- PCB check its function (used for factory production.
Short it after power ON-- time short function, 60 seconds become to 1 second.
CJ2: Reserved
Bridge instruction
BM2_1 Cooling only or heat pump
[1] Cooling only or heat pump
OFF
Heat pump(default)
ON Cooling only
BM2_2
BM2_3
BM2_4
Outdoor horse power selection
[2]
[3]
[4] Outdoor horse power selection
OFF
OFF
OFF YCV080
ON
OFF
ON YCV125/150
ON
ON
OFF YCV180
BM2_5 Power source selected
[5] Power source selected
OFF Single-phase
ON Three-phase
BM2_6 Communication protocol selection
[6] Communication protocol selection
OFF New protocol (default)
ON Old protocol
BM2_7
BM2_8 Running mode preference
[7]
[8] Running mode preference
OFF
OFF First on indoor unit priority (default)
OFF
ON Last on indoor unit priority
ON
OFF
Cooling priority, any one indoor unit runs in
cooling mode, the outdoor unit will run in
cooling mode, the indoor units running in
heating mode will stop
ON
ON
Heating priority, any one indoor unit runs in
heating mode, the outdoor unit will run in
heating mode, the indoor units running in
cooling mode will stop
