Mitsubishi Electric City Multi CMB-P1016NU-G, Service Handbook

Page: 118 / 349

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[
VI
Refrigerant Circuit ]
[2] Principal Parts and Functions
1. Heat source unit
(1) PQHY
Part
name
Symbols
(functions)
Notes Usage Specifications
Check
method
Compres-
sor MC1
(Comp1) Adjusts the amount of circulating
refrigerant by adjusting the oper-
ating frequency based on the op-
erating pressure data Low-pressure shell scroll
compressor
Wirewound resistance
10°C[50°F] :0 .155ohm
20°C[68°F] : 0.161ohm
30°C[86°F] : 0.167ohm
High
pressure
sensor 63HS 1. Detects high pressure
2. Regulates frequency and pro-
vides high-pressure protection
Low
pressure
sensor 63LS 1. Detects low pressure
2. Provides low-pressure protec-
tion
Pressure
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
63HS
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