Mitsubishi Electric PUHY-P120YHMU-A, Service Manual

Page: 91 / 326

[
VI
Refrigerant Circuit ]
- 82 - HWE0804A GB
[2] Principal Parts and Functions
1. Outdoor unit
Part
name
Symbols
(functions)
Notes Usage Specifications Check method
Com-
pressor MC1
(Comp1) Adjusts the amount of circulating
refrigerant by adjusting the operat-
ing frequency based on the oper-
ating pressure data P72 and 96 models
Low-pressure shell scroll
compressor
Wirewound resistance
20°C[68°F] :
0.268ohm(THMU)
0.981ohm(YHMU)
P120 model
Low-pressure shell scroll
compressor
Wirewound resistance
20°C[68°F] :
0.161ohm(THMU)
0.583ohm(YHMU)
High
pres-
sure
sensor 63HS1 1) Detects high pressure
2) Regulates frequency and pro-
vides high-pressure protec-
tion
Low
pres-
sure
sensor 63LS 1) Detects low pressure
2) Provides low-pressure pro-
tection
Pres-
sure
switch 63H1 1) Detects high pressure
2) Provides high-pressure pro-
tection
4.15MPa[601psi] OFF setting
Pressure
0~4.15 MPa [601psi]
Vout 0.5~3.5V
0.071V/0.098 MPa [14psi]
Pressure [MPa]
=1.38 x Vout [V]-0.69
Pressure [psi]
=(1.38 x Vout [V] - 0.69) x 145
GND (Black)
Vout (White)
Vcc (DC5V) (Red)
Con-
nector
63HS1
1
1 2 3
2
3
Pressure
0~1.7 MPa [247psi]
Vout 0.5~3.5V
0.173V/0.098 MPa [14psi]
Pressure [MPa]
=0.566 x Vout [V] - 0.283
Pressure [psi]
=(0.566 x Vout [V] - 0.283) x 145
GND (Black)
Vout (White)
Vcc (DC5V) (Red)
Con-
nector
63LS
1
1 2 3
2
3