Specifications

1077
FDC-HKXR
Did turn off
the power of outdoor
unit during
operation?
Power supply
ON
NO
(1)
YES
YES
NO
Note (1) This case is limited to the separate power supplies to indoor/outdoor units. (Combination of (indoor unit) red LED 2
time flash and (outdoor unit) green LED stays off means that the power supply to the outdoor unit has been
interrupted during operation.)
Power supply reset
Is it
normalized?
Defective outdoor unit
PCB→Replacement (De-
fective network communi-
cation circuit)
• Blown fuse?
• Broken or loose wire at L
1 , L 2 or N
Phase?
• Was not there the power failure?
(1)
Malfunction due to noise, etc.
(Out of control CPU of outdoor
unit due to noise during power on)
Signal wire poor
connection at outdoor
unit?
Repair
Repair
Power supply reset
Is it
normalized
Signal wire poor
contact between indoor/
outdoor units?
Unit is normal.
(Malfunction by
accidental noise)
YES
YES
YES
NO
NO
Defective outdoor unit
PCB→Replacement (De-
fective network communi-
cation circuit)
(1)
(2)
Indoor unit
Red LED
Green LED
2time flash
Keeps flashing
Outdoor unit
Red LED
Green LED
Stays OFF
Stays OFF
2
Error display:
[Outdoor unit signal line error, power supply error]
Red LED
Green LED
Stays OFF or
keeps flashing
Stays OFF or
Lights continuously
Outdoor unit
Outdoor unit
Red LED
Green LED
Stays OFF
Keeps flashing
Notes (1) Check for poor connection (Iooseness, mis-
connection) at outdoor unit terminal block
and broken signal wires between outdoor
units.
(2) Check the poor connection or broken signal
wires between indoor/outdoor units.