Hitachi RAS-2-HVNP Service Manual page 217

8. Troubleshooting
N O T E
• *1) In the case that the end terminal resistance (DSW5-1) is set to OFF for H-LINK connection, set the end
terminal resistance to ON when CN8 is disconnected. Set the end terminal resistance to OFF when CN8 is
reconnected.
• *2) Transmission Setting (SW1)
Item Setting Position
SW1 Left Side (for H-LINK/H-LINK II)
• *3)
PCB1 output voltage
Vcc 12 – GND2
Vcc 05 – GND1
Vcc 12 – GND1
Vcc 15 – GND1
Vcc 24 – GND1
Vcc 12T– GND1
• *4) The rotary switch (RSW2) is not available depending on the indoor unit model.
• *5) Surely perform the troubleshooting of DC fan motor. If DC fan motor fails, the normal inverter PCB may be
damaged.
• *6) Refer to section Checking procedure of PCB by means of the Remote Control Switch.
203
SMGB0079 rev.0 - 01/2013
Voltage
12 VDC
5 VDC
12 VDC
15 VDC
24 VDC
12 VDC
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