Mitsubishi Electric PUHZ-ZRP100VKA3 Service Manual page 64

10-9. TEST POINT DIAGRAM
Outdoor controller circuit board
PUHZ-ZRP100/125/140VKA3.UK
PUHZ-ZRP100/125/140YKA3.UK
PUHZ-ZRP200/250YKA2.UK
SW1
Manual defrost,
SW7
detect history
Demand control setting
record reset,
refrigerant address
SW6
Model select
SW4
Test operation
SWP
Pump down
SW5
Function switch
SW8
Pipe replace
Wiring replace
CNM
Connect to A control
service tool
CNMNT
Connect to
M-NET adapter (CN5)
CNVMNT
Connect to
M-NET adapter (CND)
LEV-A,B
Linear expansion valve
(LEV-B is for ZRP100–140 only.)
63H
High pressure switch
TH4
Thermistor <Discharge>
(ZRP100–140 only)
TH3
Thermistor
<Liquid>
TH7/6
Thermistor
<Ambient/
2-phase pipe>
TH32
Thermistor
<Comp. Surface>
(ZRP200/250 only)
TH33
Thermistor
<Comp. Surface>
(ZRP100–140 only)
V
FG
(Voltage between
right pins of PC5C
and PC5D, pin 3
and pin 4)
(Same as
(CNF1 (+)- (−))
7 4
V
SP
(Voltage between pins of
C5A, C5B):
CNF1, CNF2
0 V DC (when stopped),
Connect to the fan motor
1– 6.5 V DC (when operated)
1–4: 250–330 V DC
5–4: 15 V DC
6–4: 0–6.5 V DC
7–4: 15 V DC (When stopped)
OCH645
CNDM
1 to 2: Input of low-level sound priority mode
1 to 3: Input of external contact point
7.5 V DC (When operated)
(0–15 V pulse)
CNDC
250–330 V DC
Communication power supply
(1+, 3−)
D71 Voltage
(Outdoor power circuit board
24 V DC
for ZRP100–140V)
(Noise filter circuit board
for ZRP100–250Y)
64
<CAUTION> TEST POINT1 is high voltage.
CN51
External signal output
• Compressor operating signal
• Abnormal signal
CN52C
(Connect to the power
circuit board (CN52C))
(ZRP100–140V)
LEV-C
Linear expansion valve
(For ZRP140 only)
CN4
Transmission to out-
door power circuit
board (CN4)
21S4
4-way valve
CN2
Connect to the outdoor
power circuit board (CN2)
1–5: Reception from
2–5: Zero cross signal
3,4: Not used
6–5: 16 V DC
7–5: 16 V DC
CNAC
2 to 4: Power supply for
1 to 3: Power supply for
CNS
S1–S2: 230 V AC
+ −
power circuit board
(0–5 V DC)
outdoor control-
ler circuit board
(230 V AC)
indoor and outdoor
unit connection
wire (230 V AC)