–72–
Name
Application
Specification
Check method
Object
BC controller
Symbol
(function)
1
273+t
Pressure
sensor
Thermistor
PS1
PS3
TH11
(liquid inlet
temperature)
TH12
(bypass outlet
pressure)
TH15
(bypass outlet
temperature)
TH16
(bypass inlet
temperature)
1) Liquid pressure (high-pressure)
detection
2) LEV control
1) Intermediate pressure detection
2) LEV control
LEV control (liquid refrigerant control)
LEV control (superheat control)
LEV control (superheat control)
LEV control (subcool control)
R
0
=15k
Ω
B
0/100
=3460
Rt =
15exp{3460( - )}
0˚C
: 15k
Ω
10˚C : 9.7k
Ω
20˚C : 6.4k
Ω
25˚C : 5.3k
Ω
30˚C : 4.3k
Ω
40˚C : 3.1k
Ω
Continuity check
by a tester
Same as LEV of
indoor unit.
1
273+0
AC 220~240V
Open when energized
Closed when de-energized
12V DC stepping motor drive
0 to 2000 valve opening
pulse
Opens for cooling-only, defrosting.
Supplies refrigerant to cooling indoor
unit.
Supplies refrigerant to heating indoor
unit.
Supplies refrigerant to cooling indoor
unit.
Liquid level control
pressure control
Liquid level control
pressure control
SVM *1
SVA
SVB
SVC
LEV1
LEV3
Solenoid
valve
Electronic
expansion
valve
*1.
SVM is not built in depending on models.
Pressure
0~30 kg/cm
2
G
(0~2.94MPa)
Vout 0.5~3.5 V
Gnd (black)
Vout (white)
Vc (DC5V) (red)
Con-
nector
PS1
PS3
