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1-23
TROUBLESHOOTING
Is LED2 (yellow)
on PCB1 ON?
Is PCB1' setting
Non-pole operating.
*2)
No
No
Yes
Yes
Yes
Is the voltage
between "1P" and "3P"
of PCN1 on PCB1
220V or 240V?
Is DSW5-1P
(Terminal Resistance)
on PCB1 ON?
Is LED3 (yellow)
on PCB1 flickering
more than once in
10 seconds?
No
Is connector (PCN2,
CN11, CN1 or CN2)
for transformer is
loosened?
Is LED1 (red) on
PCB1 ON?
Set it correctly.
No
Remove CN8 of
PCB1. *1)
Yes
Is LED3 on
PCB1' ON?
Yes
Is LED3 (yellow) on
PCB1' flickering more than
once in 10 seconds.
Yes
Connect CN8 of
PCB1.
Faulty PCB1.
Replace fuse.
No
1P: Pin No.1
Set it correctly.
Set it correctly.
Faulty PCB1'.
Faulty PCB1'.
Yes
Plug PCN2, CN11 and
CN1 or CN2 correctly.
Check the fuses of
outdoor unit power
supply.
No
Check wiring between
outdoor unit and indoor
units or fuse (EF1) for
PCB1'.
No
Does refrigerant system
setting between DSW4
on PCB1 and DSW5 on
PCB1' correspond?
Yes
No
Does Alarm occur with
all indoor units?
Yes
No
Faulty PCB1
PCB1:
Outdoor Unit Printed Circuit Board
PCB1': Indoor Unit Printed Circuit Board
Outdoor
Unit
Check other indoor units.
No
No
No
Is the fuse for
PCB1 melted?
Yes
Yes
No
Is LED3 (yellow)
ON even if CN2 of
PCB1' is removed?
Yes
Yes
Indoor
Unit
*1): In case that terminal resistance (DSW5-1P) is OFF when H-Link Connection is performed.
Set the terminal resistance to ON when CN8 is removed.
Set the terminal resistance to OFF when CN8 is reconnected.
*2): PCB1' Factory Setting for Non-Pole Transmitting
Item
Setting Position
SW2
Left Side (New Transmission Side)
JP1
Short Circuited
CN2
Transmission Wire Connecting
CN18
Non-Occupied
Содержание Utopia PAS-3HVRG
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