Mitsubishi Electric City Multi CMH-WM250V-A, Service Handbook

Page: 80 / 436

[3-3 Functions of the Major Components of Outdoor Unit ]
BS_03_E
chapter 3 -
13
3 Major Compon
ent
s
, Their Fun
ct
io
ns
a
n
d
Re
frig
e
ra
n
t
Circ
ui
ts
3-3 Functions of the Major Components of 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
(E)M200 - (E)M350 models
Low-pressure shell scroll
compressor
wirewound resistance
20°C [68°F]: 0.192 Ω
(E)M400 - (E)M500 models
Low-pressure shell scroll
compressor
wirewound resistance
20°C [68°F]: 0.219 Ω
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
3) Defrost control during heating
operation
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
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