95
8-8-5. Outdoor multi circuit board
PUMY-125VMA
PUMY-125VMA
1
21S4
4-way valve
52C
52C Relay
SV
Solenoid valve
MF1, MF2
Connect to
fan motor
CNDC
300-380V DC
Connect to the outdoor
power circuit board (CNDC)
CN51
Commpressor
drive signal
output
TH2
Thermistor
detection of
low pressure
saturated
temperature
TH5
Thermistor
detection of
pipe temperature
TH6
Thermistor
detection of
outdoor
temperature
TH1
Thermistor
detection of
discharge
temperature
63HS
High pressure
sensor
CNS2
Connect to the
terminal block TB7
(For centralized control)
CNS1
Connect to the
terminal block TB3
(Indoor/outdoor unit
connecting wire)
LEV-A
Expansion
valve
49C/26C
Thermal
switch
CN3S
Demand
signal
CN3D
Auto change
over signal
CNAC
Power supply from
outdoor noise filter
circuit board
(CNAC2)
220-240V AC
CN4
Transmission to
the outdoor power
circuit board (CN4)
SWU2, SWU1
Unit address
selection
SW4
Model selection
SW1
Display selection
SW5
Function selection
SW3
Test selection
SW2
Function selection
SW6
Function selection
–
+
}
CN2
Signal wires
Connect to
the outdoor
power circuit
board (CN2)
OC183E--4.qxp 10.5.6 0:54 PM Page 95