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Wiring Diagram - Mitsubishi Electric EHST20C-VM6HB Service Manual

Split-type, air to water heat pump
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8

WIRING DIAGRAM

PUHZ−SW75VHA WIRING DIAGRAM
PUHZ-SW75VHA.UK
PUHZ-SW75VHA-BS.UK
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
63HS
High Pressure Sensor
TH3
Thermistor <Liquid>
TH4
Thermistor <Discharge>
TH6
Thermistor <2-Phase Pipe>
TH7
Thermistor <Ambient>
TH8
Thermistor <Heat Sink>
TH34
Thermistor <Comp. Surface>
LEV-A, LEV-B
Linear Expansion Valve
ACL
Reactor
CY1, CY2
Capacitor
63H
C. B.
CNF1
MF1
1
(WHT)
7
MS
3~
C N F2
1
(WHT)
7
3
TRAN S
1
CNDC
(PNK)
CNAC
F2
(WHT)
CNS
1
(WHT)
F1
3
1
3
P. B.
PFC
R
RED
W H T
S
CB1
+
1 MODEL SELECT
*
The black square ( )
indicates a switch position.
MODEL
SW6
ON
ON
75V
OFF
OFF
1 2 3 4 5 6 7 8
2
SW5 -1 to 5 : Function Switch
*
OCH533D
PUHZ-SW75VHAR3.UK
PUHZ-SW75VHAR3-BS.UK
SYMBOL
P. B.
Power Circuit Board
R, S
Connection Terminal <L/N-Phase>
U, V, W
Connection Terminal <U/V/W-Phase>
IPM
Power Module
PFC
Converter
CB1, CB2, CB3
Main Smoothing Capacitor
N. F.
Noise Filter Circuit Board
LI, LO
Connection Terminal <L-Phase>
NI, NO
Connection Terminal <N-Phase>
EI, E2, E3
Connection Terminal <Ground>
52C
52C Relay
C. B.
Controller Circuit Board
Switch <Manual Defrost, Defect History,
SW1
Record Reset, Refrigerant Address>
SW4
Switch <Test Operation>
LEV-A
LEV-B
63HS
TH7
TH6
TH3
TH4
TH34
M
M
1
4 1 2 2 1
1
3
2 1
1
5
1
TH7/6
TH3
TH4
63HS
TH34
LEV-A
LEV-B
(RED)
(WHT)
(WHT)
(WHT)
(RED)
(WHT)
(RED)
1
1 3
63L
1
3
(RED)
63H
(YLW)
CN4
(WHT)
CN2
1 2
(WHT)
1
7
2
5
F3
2
1
3
1
F4
21S4
(GRN)
4
21S4
RED
RED
W H T
W H T
AC L
M C
MS
3~
W
U
V
CN5
1
(RED)
2
IPM
CN4
1
(WHT)
2
U
1
V
CN3
(WHT)
2
W
1
CN2
(WHT)
CB2
CB3
7
+
+
L N
SW5-6
*
2
1 2 3 4 5 6
POWER SUPPLY
~/N 230V 50Hz
BH79B652H01
NAME
SYMBOL
SW5
Switch <Function Switch, Model Select>
SW6
Switch <Model Select>
SW7
Switch <Function Switch>
SW8
Switch <Function Switch>
SW9
Switch <Function Switch>
SWP
Switch <Pump Down>
CN31
Connector <Emergency Operation>
CNDM
Connector <Connection for Option>
CN51
Connector <Connection for Option>
SV1/CH
Connector <Connection for Option>
SS
Connector <Connection for Option>
CNM
Connector <Connection for Option>
LED1, LED2
LED <Operation Inspection Indicators>
F1, F2, F3, F4
Fuse <T6.3AL250V>
X51, X52, X54
Relay
*
1
*
1
5
1
3
1
5
C N VM N T
C N M N T
(WHT)
(WHT)
14
C N M
(WHT)
CN31
1
3
1
1
3
CN52C
3
(RED)
1
2
5
SV1
3
1
3
SS
/CH
(WHT)
(GRY)
RED
W H T
LO
N O
2
2
1
TH8
3
5
1
3
LI
N I
CY1
CY2
TB1
S1 S2 S3
INDOOR
UNIT
17
NAME
N. F.
1
2
2
1
2
2
EI

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