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[5] List of Major Component Functions
Symbol
Name
(function)
Compres-
MC
sor
High
63HS
pressure
sensor
Low
63LS
pressure
sensor
Pressure
63H
switch
Thermistor
TH1
(discharge)
TH2
(low pressure
saturation
temperature)
TH5
(piping
temperature)
TH6
(Inlet water
temperature)
TH7
TH8
(subcool coil
bypass outlet
temperature)
TH9
THINV
Application
Adjust refrigerant circulation by
controlling operating frequency and
capacity control valve with operating
pressure.
1) High press. detection.
2) Frequency control and high
pressure protection
1) Detects low pressure
2) Calculates the refrigerant circula-
tion configuration.
3) Protects the low pressure
1) High pressure detection
2) High pressure protection
1) Discharge temperature detection
2) High pressure protection
20°C :
250kΩ
70°C
:
34kΩ
30°C :
160kΩ
80°C
:
24kΩ
40°C :
104kΩ
90°C
:
17.5kΩ
50°C :
70kΩ
100°C :
13.0kΩ
60°C :
48kΩ
110°C :
9.8kΩ
1) Detects the saturated vapor
temperature.
2) Calculates the refrigerant circula-
tion configuration.
3) Controls the compressor fre-
quency.
4) Controls the outdoor unit's fan air
volume.
1) Frequency control
2) Defrost control and liquid level
detection at heating
1) Inlet water temperature detection
2) Liquid level heater, and opening
setting for oil return
Subcool coil bypass LEV (LEV1)
control (subcool coil outlet temperature)
Subcool coil bypass LEV (LEV1)
control
1) Detects the CS circuit fluid tempera-
ture.
2) Calculates the refrigerant circulation
configuration.
1) Detects the temperature at the
inverter cooler's heat exchanger
outlet.
2) Controls the LEV2 opening angle.
Specification
Low pressure shell scroll type
with capacity control mechanism
Winding resistance:
Each phase 0.583Ω (20°C)
Pressure
63HS
0~2.94MP
a
Vout 0.5~3.5 V
0.1V/0.098MPa
Con-
Gnd (black)
nector
Vout (white)
Vcc (DC5V) (red)
Pressure
63LS
0~0.98MP
a
Vout 0.5~3.5 V
0.3V/0.098MPa
Con-
nector
Gnd (black)
Vout (white)
Vcc (DC5V) (red)
Setting
2.94MPa OFF
R
=7.465kΩ
120
B
=4057
25/120
Rt = 7.465exp
1
1
{4057(
-
)}
273+t
273+120
R
=33kΩ
0
B
=3965
0/100
Rt =
1
1
33exp{3965(
-
273+t
273+0
-20°C :
92kΩ
-10°C :
55kΩ
0°C
:
33kΩ
10°C
:
20kΩ
20°C
:
13kΩ
30°C
:
8.2kΩ
R
=15kΩ
0
B
=3460
0/100
Rt =
1
1
15exp{3460(
-
273+t
273+0
0°C
:
15kΩ
10°C
:
9.7kΩ
20°C
:
6.4kΩ
25°C
:
5.3kΩ
30°C
:
4.3kΩ
40°C
:
3.1kΩ
R
=15kΩ
0
B
=3460
0/100
Rt =
1
1
15exp{3460(
-
273+t
273+0
0°C
: 15kΩ
10°C
: 9.7kΩ
20°C
: 6.4kΩ
25°C
: 5.3kΩ
30°C
: 4.3kΩ
40°C
: 3.1kΩ
–64–
Check method
Object
• PQRY
• PQHY
• PQRY
• PQHY
Continuity check
• PQRY
• PQHY
Resistance value
check
Resistance value
check
)}
• PQHY
)}
• PQHY
• PQHY
• PQRY
• PQHY
)}
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