Hitachi FSG Series Service Manual page 31

Alarm Code
03
n "RUN" light flickers and "ALARM" is indicated on the remote control switch.
n The unit No., alarm code and the unit code is alternately indicated on the set temperature section, and the
unit No. and alarm code are indicated on the display of the outdoor unit PCB.
‘
This alarm is indicated when abnormality is maintained for 3 minutes after normal transmitting between
indoor units and outdoor unit, and also abnormality is maintained for 30 seconds after the micro-computer is
automatically reset.
The alarm is indicated when the abnormal transmitting is maintained for 30 seconds from starting of the
outdoor unit.
‘
Investigate the cause of overcurrent and take necessary action when fuses are melted or the breaker for
the outdoor unit are activated.
(See next page)
Note from next page:
*1) In case that terminal resistance (DSW10-1P) is OFF when H-Link Connection is performed.
Set the terminal resistance to ON when CN2 is removed.
Set the terminal resistance to OFF when CN2 is reconnected.
Power Supply
380-415V 50Hz
*2) PCB1 factory Setting for Non-pole Transmitting
item
SW1 Left side (New transmission side)
JP1 Short Circuit
CN2 Transmission Wire Connecting
CN18 NBon-Occupied
Abnormal Transmitting between Indoor Units and Outdoor Unit
Check Item
FastonTerminal
between R1 and N
Setting Position
TROUBLESHOOTING
1
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