Test Point Diagram; Circuit Boards View - Mitsubishi Electric PUZ-ZM100VKA Service Manual

10-9. TEST POINT DIAGRAM

Outdoor controller circuit board
PUZ-ZM100VKA.UK
PUZ-ZM100YKA.UK
SW7
Demand control setting
SW4
Test operation
SW6
Model select
SWP
Pump down
SW5
Function switch
SW8
Pipe replace
Wiring replace
CNMNT
Connect to
M-NET adapter (CN5)
CNVMNT
Connect to
M-NET adapter (CND)
CNM
Connect to A control
service tool
LEV-A,B
Linear expansion valve
63H
High pressure switch
TH4
Thermistor <Discharge>
TH3
Thermistor
<Liquid>
TH7/6
Thermistor
<Ambient/
2-phase pipe>
TH33
Thermistor
<Comp. Surface>
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):
0 V DC (when stopped), CNF1, CNF2
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)
OCH654
PUZ-ZM125VKA.UK
PUZ-ZM125YKA.UK
SW1 CNDM
Manual defrost, 1 to 2: Input of low-level sound priority mode
detect history
1 to 3: Input of external contact point
record reset,
refrigerant address
7.5 V DC (When operated)
(0–15 V pulse)
PUZ-ZM140VKA.UK
PUZ-ZM140YKA.UK
CN51
External signal output
• Compressor operating signal
• Abnormal signal
CNDC
250–330 V DC
Communication power supply
(1+, 3−)
D71 Voltage
(Outdoor power circuit board
24 V DC
for ZM100–140V)
(Noise filter circuit board
for ZM100–140Y)
66
<CAUTION> TEST POINT1 is high voltage.
21S4
4-way valve
CN52C
(Connect to the power
circuit board (CN52C))
(ZM100–140V only)
LEV-C
Linear expansion valve
(For ZM140 only)
CN4
Transmission to out-
door power circuit
board (CN4)
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)