Test Point Diagram Outdoor Controller Circuit Board - Mitsubishi Electric PUHZ-W90VHA Service Manual

8-6. TEST POINT DIAGRAM
Outdoor controller circuit board
CNS
Not used
CNAC
to : Power supply
for outdoor controller
circuit board
(220V-240V AC)
to : Not used
CN2
Connect to the out-
door power circuit
board (CN2).
- :
Power circuit board
to the controller circuit
board
(0-5V DC)
- :
(0-5V DC)
- : 18V DC
- : 16V DC
- : 16V DC
[ : – , , , : + ]
21S4
Four-way
valve
SV2
Bypass valve
CN4
to outdoor
power circuit
board (CN4)
CN52C
Connect to the outdoor noise
filter circuit board. (CN52C)
V )
CC
CN51
CNDM / CN3S
Connect to interface
Connect to interface
circuit board.(CN2F2)
circuit board.(CNIF1)
25
V
DC
63H
: DC280V-380V
SW2
)
CNDC
+
DC280V-380V
}
–
outdoor power
circuit board.
V ( )
SP
of C5B): DC 0V (when
stopped), DC 1– 6.5V
(when operated)
V ( )
FG
pins of PC5D, pin 3
and pin 4)
<Plate Hex liquid
Linear expansion valve
SW8
Function switch
SW6
Model select
SW1
Forced defrost,
detect history
record reset