Hitachi FSG Series Service Manual page 88

1
TROUBLESHOOTING
80
b. Inverter Printed Circuit Board: PCB3
*Dip Switch and LED Functions on Outdoor Unit Inverter Printed Circuit Board
Switch Name
DSW1
21
2))
Name of Printed Circuit Board
LED1 (Red)
* LED2 (Red)
*: Applied to the following products;
RAS-5FSG/FS3 (After Manufacturing # U4MV0197)
RAS-8~20FSG/FS3 (After Manufacturing # U4NG1002)
Normal: No.1 and No.2 of DSW1 are OFF.
Emergency Operation or Troubleshooting:
No.1 of DSW1 is ON
No.2 of DSW1 is OFF
The above setting aims not to trip even if the CT detects 0A.
This indicates the state of transmission.
Flickering: Normal Transmission
Activated or Deactivated: Abnormality in Transmission Circuit
This indicates the voltage between both terminal of capacitor CB1 and CB2
for inverter part.
Activated: The voltage between both terminals of capacitor, CB is 50V ±
20V or greater.
Deactivated: The voltage between both terminals of capacitor, CB is 50V
±20V or smaller.
Function
Function