Hitachi RASC-HNPE CENTRIFUGAL VRF Series Installation And Operation Manual page 55

Commissioning
Remote Control
Switch Indication
The operation lamp
And the Unit No. and
The operation lamp
Indication of Flicker
except above
The operation lamp
Flickers. (1 Time/1s)
Unit No. , Alarm Code
and Unit Code
Back to after checking
Instructions for the recovery when the fuse of the transmission circuit is blown out:
1
Correct the wiring to the terminal board.
2
Set the 1st pin of DSW7 on the indoor unit PCB to ON.
41 PMML0319A rev.1 - 06/2015
Unit Condition
The unit does not start.
The unit does not start.
The unit does not start, or start once
and then stops
The unit does not start.
Wrong Portions
The power source of RASC Unit
in not turned ON.
The connecting wires of operating
line are incorrect or loosened.
Remote control cable is broken.
Contact of connectors is not
good.
The connection of remote control
cable is incorrect
The connection of thermistor or
other connectors are incorrect.
Tripping of protector exists, or
else.
The connection of the remote
control cable between Indoor
Units is incorrect.
Inspection Points after
Power Source OFF
1
Connecting Order of each Terminal
Board.
2
Screw fastening of each Terminal
Boards.
N O T E
operating circuit. There is a fuse
the power lines are connected to
operating lines. If fuse is melted,
operating circuit can be recovered
once by setting the dip switch on the
This is the same as item 1 and 2.
Check by the abnormality mode table
in the Technical Catalogue (Do it by
service people).
Check by the abnormality mode table
in the Technical Catalogue (Do it by
service people).