Hitachi YUTAKI S80 Series - Page 120

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