Mitsubishi Electric PUHZ-W50VHA-BS Service Manual page 60

Outdoor controller circuit board
PUHZ-HW112YHA2R3(-BS)
SW1
Forced defrost, detect
history record reset
SW7
Function switch
(HW·HA2 only)
SW6
Model select
SW5
Function switch
SW8
Function switch
LEV-A,B,C
Linear expansion
valve
TH34
Thermistor
<Comp. surface>
63L
Low pressure switch
TH4
Thermistor
<Discharge>
TH3
Thermistor
<Liquid pipe>
TH7/6
Thermistor
<Outdoor/
Plate Hex liquid>
TH32
Thermistor
<Inlet water temperature>
TH33
Thermistor
<Suction pipe temperature>
V
FG
(Voltage between
right pins of PC5C
and PC5D, pin 3
and pin 4)
(Same as
7 4
(CNF1 (+)- (-))
V
SP
(Voltage between pins
of C5A, C5B):
DC 0 V (when stopped),
DC 1– 6.5 V
CNF1, CNF2
(when operated)
Connect to the fan motor
1-4: 280-380 V DC
5-4: 15 V DC
6-4: 0-6.5 V DC
7-4: 15 V DC (When stopped)
7.5 V DC (When operated)
(0 V-15 V pulse)
OCH439H
PUHZ-HW140YHA2R3(-BS)
SW9 SW2
Function switch Operation monitor
function
CNDC
280-380 V DC (1+, 3-)
(Outdoor power circuit
board for HW140V)
(Noise filter circuit board
for HW112, 140Y)
60
<CAUTION> TEST POINT 1 is high voltage.
PUHZ-HW140VHA2R3(-BS)
CNDM
1 to 2:
Input of low-level
sound priority mode
CN52C
Connect to the power
circuit board (CN52C)
(HW140V)
CN4
Transmission to out-
door power circuit
board (CN4)
SV1
Connection for option
(Drain hose heater output)
21S4
4-way valve
63H
High pressure
switch
CN2
Connect to the outdoor
power circuit board (CN2)
1-5: Reception from
2-5: Zero cross signal
3-4: Not used
6-5: 16V DC
7-5: 16V DC
CNAC
2 to 4:
Power supply for outdoor
controller circuit board
(230 V AC)
1 to 3:
Power supply for indoor
and outdoor unit connec-
tion wire
(230 V AC)
CNS
S1-S2: 230 V AC
power circuit board
(0-5 V DC)
(HW112, 140Y)
18V DC
(HW140V)