Wiring Diagram - Mitsubishi Electric PUZ-A18NHA4 Service Manual

7

WIRING DIAGRAM

PUZ-A18NHA4 PUZ-A18NHA4-BS
[LEGEND]
SYMBOL NAME
TB1 Terminal Block<Power Supply, Indoor/Outdoor>
MC Motor for Compressor
MF1 Fan Motor
21S4 Solenoid Valve (Four-Way Valve)
63H High Pressure Switch
TH3 Thermistor<Outdoor Pipe>
TH6 Thermistor<Outdoor 2-Phase Pipe>
TH7 Thermistor<Outdoor>
TH8 Thermistor<Heatsink>
TH32 Thermistor<Shell>
LEV-A Electronic Expansion Valve
ACL Reactor
CY1,CY2 Capacitor
P.B.
Power Circuit Board
TABR/S
Connection Terminal<L1/L2-Phase>
TABU/V/W
Connection Terminal<U/V/W-Phase>
TH32 TH7 TH6 TH3
C. B.
t° t°
CNF1
MF1 1
(WHT)
7 1 2 1
MS
TH32 TH7/6
3~
(BLK) (RED)
3
TRANS
1
CNDC
(PNK)
F2
CNAC
CNS (WHT)
(WHT) 1 2
F1
3 1 3 4
P. B.
PFC
TABR
RED
WHT
TABS
CB1 CB2
1 MODEL SELECT
The black square ( ■ ) indicates a switch position.
MODEL SW6
ON
PUZ-A18NHA4
OFF
1 2 3 4 5 6 7 8
ON
PUY-A12NHA4
OFF
1 2 3 4 5 6 7 8
ON
PUY-A18NHA4
OFF
1 2 3 4 5 6 7 8
2. SW5-1 to 4 : Function switch
SYMBOL
PFC Converter
IPM Power Module
CB1~CB3 Main Smoothing Capacitor
N.F. Noise Filter Circuit Board
Connection Terminal<L1-Phase>
LI/LO
NI/NO Connection Terminal<L2-Phase>
EI,E2,E3 Connection Terminal<Ground>
52C Relay
52C
C.B. Controller Circuit Board
SW1 Switch<Forced Defrost, Defect History
SW4 Switch<Test Operation>
SW5 Switch<Function Switch>
SW6 Switch<Model Select>
SW7 Switch<Function Setup>
SW8 Switch<Function Setup>
LEV-A
63H
M
t° t°
4 1 2 1 6
TH3 LEV-A CNVMNT
(WHT) (WHT) (WHT)
1
1 3
63H
(YLW)
CN2
CN4
(WHT)
(WHT)
1 7
1 2
2
5
F3
3 1 3
21S4
F4
(GRN)
21S4 PUZ only
RED RED
WHT WHT
ACL
MC
MS
3~
W U
V
2
CN5 1
(RED)
2
IPM
2
CN4
1
(WHT)
2
TABU
CN3
1
TABV
(WHT)
2
TABW
t°
TH8
5
1
CN2
(WHT)
CB3
7
SW5-5.6 2
ON
OFF
1 2 3 4 5 6
ON
OFF
1 2 3 4 5 6
ON
OFF
1 2 3 4 5 6
L1 L2 GR S1 S2 S3
POWER SUPPLY
208 / 230V 60Hz
PUY-A12/18NHA4
NAME
Record Reset, Refrigerant Address>
When M-NET adapter is connected
5
3
5
1 1
1 3 1 5
CNMNT
(WHT)
14
CNM
(WHT)
CN31
CN52C
(RED)
3
1 2
A B S
1
2
5
1
1 3 1
SV2 SS
(BLU) (WHT)
RED
WHT
LO NO
1
3
1
3
U U
LI EI NI
CY1
CY2
TB1
INDOOR
UNIT
Use copper supply wires.
16
PUY-A12/18NHA4-BS
SYMBOL NAME
SW9 Switch
LED1,LED2 LED<Operation Inspection Indicators>
F1~F4 Fuse<T6.3AL250V>
SWP Switch<Pump Down>
CN31 Connector<Emergency Operation>
SS Connector<Connection for Option>
CNM Connector<A-Control Service Inspection Kit>
CNMNT Connector
<Connected to Optional M-NET Adapter Board>
CNVMNT Connector
<Connected to Optional M-NET Adapter Board>
Connector <Connected for Option (Contact Input)>
CNDM
Connector <Connected for Option (Signal output)>
CN51
X51, X52, X55 Relay
5 SW11
SW1
1
LED2
SW12
LED3
LED4
M-NET ADAPTER
2
CND
1
(WHT)
3 1
3
TB7
M-NET
N. F.
M-NET ADAPTER
SYMBOL
TB7 Terminal Block<M-net connection>
1 2
CN5 Connector<Transmission>
2
CND Connector<Power Supply>
CN2M Connector<M-NET communication>
SW1 Switch<Status of communication>
SW11 Switch<Address setting : 1s digit>
SW12 Switch<Address setting : 10s digit>
LED1 LED<Power Supply : DC5V>
LED2 LED<Connection to Outdoor Unit>
LED3 LED<Transmission : Sending>
LED4 LED<Transmission : Receiving>
LED5 LED<Power Supply : DC12V>
1
2
2
NAME