Mitsubishi Electric PURY-100TMU, Service Handbook

Page: 47 / 121

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Name Application Specification Check method
BC controller
Symbol
(function)
1
273+t
Pressure
sensor
Thermistor
PS1
PS3
TH11
(liquid inlet
temperature)
TH12
(bypass outlet
pressure)
TH15
(bypass outlet
temperature)
TH16
(bypass inlet
temperature)
1) Liquid pressure (high-pressure) detection
2) LEV control
1) Intermediate pressure detection
2) LEV control
LEV control (liquid refrigerant control)
LEV control (superheat control)
LEV control (superheat control)
LEV control (subcool control)
R
0
=15k
Ω
B
0/100
=3460
Rt =
15exp{3460( - )}
0˚C (32˚F) : 15k
Ω
10˚C (50˚F) : 9.7k
Ω
20˚C (68˚F) : 6.4k
Ω
25˚C (77˚F) : 5.3k
Ω
30˚C (86˚F) : 4.3k
Ω
40˚C (104˚F) : 3.1k
Ω
Continuity check
by a tester
Same as LEV of
indoor unit.
1
273+0
AC 208~230V
Open when energized
Closed when de-energized
12V DC stepping motor drive
0 to 2000 valve opening
pulse
Supplies refrigerant to cooling indoor
unit.
Supplies refrigerant to heating indoor
unit.
Supplies refrigerant to cooling indoor
unit.
Liquid level control
pressure control
Liquid level control
pressure control
SVA
SVB
SVC
LEV1
LEV3
Solenoid
valve
Electronic
expansion
valve
Pressure
0~2.94MPa
(0~426psi)
Vout 0.5~3.5 V
Gnd (black)
Vout (white)
Vc (DC5V) (red)
Con-
nector
PS1
PS3