Haier AB142ACBIA [269/365] Ports on pcb functions for au142afbea au182afbea

Haier HBU-12HA03/R1(B) [269/365] Ports on pcb functions for au142afbea au182afbea
CN1second side of transformer
CN2
high pressure switch
CN3
outdoor ambient temperature sensor
CN4
primary side of transformer
CN10
low pressure switch
CN11
compressor discharging temp. sensor
CN12: outdoor coil temperature sensor
HB, N1: water pump control terminal
S: connection port for communication between indoor and outdoor
N
port for neutral wire
FAN, N3: control port for fan motor
ST, N2: control port for 4-way valve
L1
L2L3power supply terminal(herein, no L2, L3 for single phase compressor)
N
port for neutral wire
TEST
port for compulsory running, herein, on ZR side, short connecting the two pins
can enter the compulsory heating; on ZL side, short connecting the two pins can enter
the compulsory cooling.
CT1
current detector
LED1
outdoor LED
Ports on PCB functions for AU142AFBEA~AU182AFBEA
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-269-

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