*1): In case that terminating resistance (DSW10-1P) is OFF when Hi-NET Connection
are
performed.
Set the terminating resistance to ON when #1 and #2 on TB2 is removed.
Set
the terminating resistance to OFF when #1 and #2 on TB2
are
reconnected.
Is LED3 (yellow)
on PCB1 ON?
Is PCB setting
Non-pole operating.
No
No
Yes
Yes
Yes
Is DSW10-1P
(Terminating Resistance)
on PCB1 ON?
Is LED3 (yellow)
on PCB1 flashing
more than once in
10 seconds?
Is LED1 (red)
on PCB1 ON?
Set it correctly.
No
Remove terminals of
#1 and #2 on TB2. *1)
Yes
Is LED3 (yellow)
on PCB ON?
Yes
Is LED3 (yellow) on
PCB flashing more than
once in 10 seconds.
Yes
Connect terminals of
#1 and #2 on TB2.
Faulty PCB1.
Replace fuse.
No
Set it correctly.
Set it correctly.
Faulty PCB.
Faulty PCB.
Check the fuses of
outdoor unit power
supply.
No
Check wiring between
outdoor unit and indoor
units or fuse (EF1) for
PCB.
No
Does refrigerant system
setting between
DSW1, RSW1 on PCB1
and DSW5, RSW2 on
PCB correspond?
Yes
No
Does Alarm occur with
all indoor units?
Yes
No
Faulty PCB1
Outdoor
Unit
Check other indoor units.
No
No
No
Is the fuse for
PCB1 melted?
Yes
Yes
No
Is LED3 (yellow)
ON even if #1 and #2
on TB2 is removed?
Yes
Yes
Indoor
Unit
Is the voltage
between faston terminal
"R1" and "
/
" of PCB1
220V or 240V?
PCB1: Control PCB in Outdoor Unit
PCB: Indoor Unit PCB
Check Item
Power Supply
Faston Terminal
380-415V/50Hz
380V/60Hz
N1
192
