Mitsubishi Electric PUHZ-W60VAA Service Manual page 36

9-6. TEST POINT DIAGRAM
Outdoor controller circuit board
PUHZ-W60VAA.UK
PUHZ-W60VAA-BS.UK
SW7
Demand control setting
SW9
SW4 Function switch
Test operation
SW6
Model select
SW5
Function switch
SW8
Pipe replace
Wiring replace
CNM
Connect to A control
service tool
LEV-A,B
Linear expansion valve
TH34
Thermistor
<Inlet Water>
63HS
Pressure sensor
63L
Low pressure switch
TH4
Thermistor
<Discharge>
TH3
Thermistor
<Liquid>
TH7/6
Thermistor
<Ambient/
Plate hex liquid>
TH33
Thermistor
<Comp. Surface>
V
FG
(Voltage between
right pins of PC5C
and PC5D, pin 3
and pin 4)
(Same as
(CNF1 (+)– (−))
7 4
CNF1
V
Connect to the fan motor
SP
1–4: 280–380V DC
(Voltage between pins
5–4: 15 V DC
of C5B):
6–4: 0–6.5V DC
0 V DC(when stopped),
7–4: 15 V DC (When stopped)
1–6.5 V DC
7.5 V DC (When operated)
(when operated) (0–15 V pulse)
OCH681A
PUHZ-W85VAA.UK
PUHZ-W85VAA-BS.UK
PUHZ-W85YAA.UK
PUHZ-W85YAA-BS.UK
SW2
Operation monitor
SW1
function
Manual defrost, detect
history record reset,
refrigerant address
CNDC
280–380 V DC (1+, 3−)
(Outdoor power circuit board for W60VAA, W85VAA,112VAA)
(Noise filter circuit board for W85YAA,112YAA)
PUHZ-W112VAA.UK
PUHZ-W112VAA-BS.UK
PUHZ-W112YAA.UK
PUHZ-W112YAA-BS.UK
<CAUTION> TEST POINT1 is high voltage.
CNDM
1–2:
Input of low-level sound priority mode
1–3:
Input of external contact point
36
CN51
External signal output
• Compressor operat-
ing signal
• Abnormal signal
21S4
4-way valve
SV1
Drain hose heater output
CN4
Transmission to out-
door power circuit
board (CN4)
CN2
Connect to the outdoor
power circuit board (CN2)
1–5: Reception from
power circuit board
2–5: Zero cross signal
(0–5 V DC)
3–4: Not used
(W85Y, W112Y)
18 V DC
(W60V, W85V,
W112V)
6–5: 16 V DC
7–5: 16 V DC
CNAC
2–4:
Power supply for outdoor
noise filter circuit board
(230 V AC)
1–3:
Power supply for indoor
and outdoor unit connection
wire (230 V AC)
63H
High pressure
switch
CNS
S1-S2: 230 V AC