Mitsubishi Electric PUHZ-W85VHA2 Service Manual page 28

8-6. TEST POINT DIAGRAM
Outdoor controller circuit board
PUHZ-W85VHA2.UK PUHZ-W85VHA2-BS.UK
CNS
S1-S2: 220-240 V AC
Communication
+
power supply
D71 Voltage
–
24 V DC
CNAC
2 to 4: Power supply
for outdoor controller
circuit board
(220-240 V AC)
1 to 3:
Power supply for
interface unit/Flow
temp. controller-
outdoor unit connec-
tion wire
(220-240 V AC)
CN2
Connect to the out-
door power circuit
board (CN2).
1-5:
Power circuit board
Transmitting signal
to the controller circuit
board
(0-5 V DC)
2-5: Zero cross signal
(0-5 V DC)
3-4: 18 V DC
6-5: 16 V DC
7-5: 16 V DC
[ 5: – 1,2,6,7: + ]
21S4
4-way valve
SV2
Bypass valve
SV1
Drain hose
heater output
CN4
Transmission
to outdoor
power circuit
board (CN4)
CN52C
Connect to the outdoor noise
filter circuit board. (CN52C)
(TEST POINT 2)
V
CC
(voltage between pins of C6B): DC 15 V
CNDM SW10
1 2
Model select
to :Input of low level
sound priority mode
<CAUTION> TEST POINT 1 is high voltage.
63H
High pressure switch
SW2
Operation monitor
function
28
(TEST POINT 1)
V
DC
(voltage between pins of C5E)
: DC 280 V-330 V
CNDC
+
DC 280 V -380 V
}
Connect from out-
–
door power circuit
board.
V
SP
(voltage between pins
of C5B): DC 0 V (when
stopped), DC 1 – 6.5 V
(when operated)
V
FG
(voltage between right
pins of PC5D, pin 3
and pin 4)
TH33
Thermistor
<Comp. shell temperature>
TH32
Thermistor
<Inlet water temperature>
TH6
Thermistor
<Plate Hex liquid
temperature>
TH7
<Ambient temperature>
TH3
Thermistor
<Liquid temperature>
TH4
Thermistor
<Discharge>
63HS
High pressure sensor
LEV-A,-B
Linear expansion valve
SW8
Function switch
SW5
Function switch
SW6
Model select
SW1
Forced defrost,
detect history
record reset
SW7
Function switch