Hitachi RAS-(4-12)HRNM(2)(E) - Ras-(4-10)H(V)Rns(2)E

5 Control System
124
SMGB0064 rev.0 - 08/2011
Connector indication
PCN5 CH Crankcase heater of compressor (oil)
PCN6 RVR Reversing valve relay
PCN13 PSC Pressure switch control
PCN401 PSH High pressure switch protection
THM7 AIR Outdoor air temperature thermistor
THM8 PIPE Pipe temperature thermistor
THM9 COMP Compressor temperature thermistor
THM10 — —
CN1 — Input function
CN2 — Demand input
CN5A MV Micro electronic expansion valve
CN7 — Output function
CN8 H-LINK Transmission from outdoor unit to indoor unit
CN17 — Transmission to PCB2
CN21 — Transmission to PCB1
CN22 — Transmission to IPM
CN24 MOF Motor for outdoor fan
CN25 — For inspection
CN26 — For inspection
CN27 — For inspection
CN28 — For inspection
CN301 — Transmission to PCB1
Switch indication
DSW1 Test run
DSW2 Piping length
DSW3 Capacity
DSW4 Ref. cycle number
DSW5 End terminal resistance
DSW6 Optional function
RSW1 Ref. cycle number
PSW1 Manual defrost operation switch. The defrost option is manually available under the forced defrost area
PSW2
Available optional function. Setting can be selected using the
7-segment display
PSW3
PSW351 The inverter micro-computer checking
RAS-(4-10)H(V)RNS(2)E
PCB1 LED indication
LED1 Red
This LED indicates the transmission status between
the indoor unit and the RCS
LED2 Yellow
This LED indicates the transmission status between
the indoor unit and the outdoor unit
LED3 Green Power source for the PCB