Bm2 Introduction - Haier AV08NMSETA Service Manual

BM2 Introduction

BM2 Definition
Cooling only or heat
BM2_1
pump selection
BM2_2
Outdoor capacity
selection
BM2_3
Heat reservation
BM2_4
module selection
Indoor and outdoor
BM2_5
high drop selection
Communication
BM2_6
protocol selection
BM2_7
Start mode selection
BM2_8
Note: communication protocol between indoor and outdoor units
The new communication protocol is faster than the old communication and its control content is more than the
old one.
The indoor PCB 151800113, 151800161, 0151800161B, 0151800227, 0151800244, 0010451751AF,
0151800141A, 0010451751AE and 151800141 are new communiction protocol.
The indoor PCB 151800086 and 0010451181A are old communiction protocol.
Old communication protocol indoor PCB can't connect with new communiction protocol outdoor, so if this
outdoor unit connect with old communication protocol indoor, need set the dip switch BM2-6 to ON position.
OFF Heat pump (default)
ON Cooling only
[2] [3] Outdoor capacity selection
OFF OFF 8HP (AV08NMSETA)
ON OFF 10HP (AV10NMSETA)
ON ON 12HP (AV12NMSETA)
OFF Default ( no heat reservation module) note: forbid changing
OFF No high drop (default)
ON High drop
OFF
New communication protocol (default)
ON Old communication protocol
[7] [8] Start mode selection
OFF OFF First open priority
OFF ON After open priority
Cooling priority, any one indoor unit runs in cooling
ON OFF mode, the outdoor unit will run in cooling mode, the
indoor units running in heating mode will stop.
Heating priority, any one indoor unit runs in heating
ON ON mode, the outdoor unit will run in heating mode, the
indoor units running in cooling mode will stop.
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Introduction