Hitachi YUTAKI S80 Series Technical Catalogue page 120

10. Electrical wiring
PCB3
Switch indication
PCB3
Name
Not used
Capacity Setting
Not used
Additional setting
Power source setting
H-link (transmission)
Unit control configuration
Operation
Pressure device setting 1
/ Display
Pressure device setting 2
Not used
Checking Mode (Forward)
Checking Mode (Back)
LED indication
PCB3
Name
7-segment
Power supply indication
Not used
Not used
Heat pump operation
LEDS (compressor 2)
Alarm (flickering with 1 sec
interval)
Not used
Not used
H-Link transmission
120
TCGB0075 rev.0 - 11/2012
PCB4
PCB3
Connector No.
DSW1
DSW2
DSW3
Power
DSW4
DSW5
Pro-
DSW6
tection
DSW7
Device
DSW8
Trans-
DSW9
mission
RSW1
RSW2
RSW3
RSW4
PSW1 External
Input /
PSW2
Output
Connector No.
SEG1,2,3,4,5
LED1
LED2
PCB4
LED3
Trans-
LED4
mission
LED5
LED6
LED7
A/D Input
LED8
Connector Indications
Name
Power supply
Devices power supply
Input transformer power supply (230v)
Output transformer power supply (24v)
High pressure protection (t-out)
H-Link communication
PCB1-PCB2 communication
Inverter communication
Pressure sensor (discharge) (R134a)
Pressure sensor (suction) (R134a)
R134a expansion valve (MV2)
Inverter communication
CMC Compressor (52C)
Solenoid valve 1 (SV1)
Solenoid valve 2 (SV2)
Cranksheater (CHn)
Connector Indications
Name
PCB3-PCB4 communication
R134a Suction Thermistor (THMs)
R134a Evaporation heating Thermistor
(THMeh)
Inverrter EBOX ambient temperature Ther-
mistor (THinv)
R134a Evaporation cooling Thermistor
(THMec)
R134a Discharge Thermistor (THMd)
Connector Nº
PCN1
PCN2
PCN3A,B
CN10A,B
PCN5
CN1
CN2,5,6,9
CN8
CN3
CN4
CN7a
CN8
PCN7-3
PCN9-5
PCN9-3
PCN12-3
Connector Nº
CN1,2,3,4
CN11
CN12
CN10
CN14
CN15