Mitsubishi Electric PUZ-HWM140VHA, Руководство по обслуживанию

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39
OCH748
9-7. TEST POINT DIAGRAM
<CAUTION> TEST POINT
1
is high voltage.
TH3
Thermistor <Liquid>
V
SP
(Voltage between pins
of C5A, C5B):
0 VDC (when stopped),
DC 1
–
6.5 V
(when operated)
TH32
Thermistor
<Suction>
TH33
Thermistor
<Comp. surface>
TH34
<Plate HEX liquid>
Outdoor controller circuit board
PUZ-HWM140VHA(-BS) PUZ-HWM140YHA(-BS)
Communication power
supply D71 Voltage
24 VDC
CNS
S1–S2: 230 VAC
CNAC
2
–
4
:
Power supply for outdoor
controller circuit board
(230 VAC)
1
–
3
:
Power supply for indoor
and outdoor unit connec-
tion wire
(230 VAC)
CNF1, CNF2
Connect to the fan motor
1
–
4
: 280–380 VDC
5
–
4
: 15 VDC
6
–
4
: 0–6.5 VDC
7
–
4
: 15 VDC (When stopped)
7.5 VDC (When operated)
(0–15 V pulse)
21S4
4-way valve
63H
High pressure
switch
SV1
Connection for option
(Drain hose heater output)
CN4
Transmission to out-
door power circuit
board (CN4)
SW6
Model select
SW5
Function switch
SW1
Manual defrost,
detect history
record reset
CNDM
1
–
2
:
Input of low-level
sound priority mode
TH4
Thermistor
<Discharge>
TH7/6
Thermistor
<Ambient/
2-Phase pipe>
CNDC
280–380 VDC (
1
+,
3
−)
(Outdoor power circuit board
for HWM140V)
(Noise filter circuit board for
HWM140Y)
+ −
V
FG
(Voltage between
right pins of PC5C
and PC5D, pin 3
and pin 4)
(Same as
(CNF1
7
(+)-
4
(−))
SW2
Operation
monitor function
LEV-A,B,C
Linear expan-
sion valve
SW8
Function switch
CN2
Connect to the outdoor
power circuit board (CN2)
1
–
5
: Reception from
power circuit board
2
–
5
: Zero cross signal
(0–5 VDC)
3
–
4
: Not used
(HWM140Y)
15 VDC
(HWM140V)
6
–
5
: 15 VDC
7
–
5
: 15 VDC
SW7
Function switch
63HS
<Pressure Sensor>