Principal Parts And Functions; Outdoor Unit - Mitsubishi Electric CAHV-P500YA-HPB Service Handbook

[ VI Refrigerant Circuit ]

[2] Principal Parts and Functions

1. Outdoor unit

Part Symbols
name (functions)
Com- MS
pres- (Comp)
sor
High 63HS
pres-
sure
sensor
Low 63LS
pres-
sure
sensor
Pres- 63H1
sure
switch
Thermi TH4
stor (Discharge)
HWE10060
Notes Usage
Adjusts the amount of circulat-
ing refrigerant by adjusting the
operating frequency based on
the operating pressure data
1) Detects high pressure
2) Regulates frequency and
provides high-pressure
protection
1) Detects low pressure
2) Provides low-pressure
protection
1) Detects high pressure
2) Provides high-pressure
protection
1) Detects discharge air
temperature
2) Provides high-pressure
protection
0°C[32°F] :698kohm
10°C[50°F] :413kohm
20°C[68°F] :250kohm
30°C[86°F] :160kohm
40°C[104°F] :104kohm
50°C[122°F] : 70kohm
60°C[140°F] : 48kohm
70°C[158°F] : 34kohm
80°C[176°F] : 24kohm
90°C[194°F] :17.5kohm
100°C[212°F] :13.0kohm
110°C[230°F] : 9.8kohm
Specifications
Low-pressure shell scroll
compressor
Wirewound resistance
20°C[68°F] : 0.092 ohm
Pressure
63HS
0~3.85 MPa
Vout 0.5~3.3V
1 2 3
0.071V/0.098 MPa
Pressure [MPa]
Con-
=1.38 x Vout [V]-0.69
nector
Pressure
=(1.38 x Vout [V] - 0.69) x 145
GND (Black)
1
2
Vout (White)
3
Vcc (DC5V) (Red)
Pressure
63LS
0~1.7 MPa
Vout 0.5~3.5V
1 2 3
0.173V/0.098 MPa
Pressure [MPa]
Con-
=0.566 x Vout [V] - 0.283
nector
Pressure
=(0.566 x Vout [V] - 0.283) x 145
1 GND (Black)
2
Vout (White)
3
Vcc (DC5V) (Red)
3.85MPa OFF setting
Degrees Celsius
R = 7.465k
120
R = 4057
25/120
R =
t
7.465 exp
4057
- 58 -
Check method
Resistance check
1 1
393
GB