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Error display “ WAIT
”
Indoor – outdoor communications trouble
(Initial (when the power is turned on)
Indoor unit
Red LED
Green LED
Stays OFF
Keeps flashing
2 time flash
Keeps flashing
Red LED
Green LED
Outdoor unit
If trouble occurs during communications, the error code E5 is displayed (Outdoor, Red LED flashes 2 times). The check procedure is as shown below. (However, excluding
connection related problems) Also, if the power supply is reset after E5 occurs, if the trouble is intermittent, it will be displayed in the LCD(“ WAIT ”).
The green LED in the outdoor unit is used in the FDCA301 ~ 601 models only.
Notes (1)
(2)
YES
YES
YES
YES
DC 20V
Approx.
0V DC
Approx.
0V DC
Approx.
0V DC
Approx.
0V DC
DC 20V
NO
NO
YES
YES
YES
YES
YES
YES
NO
YES
NO
NO
NO
NO
NO
Approx. 20V DC
Approx.
0V DC
Approx. 0V DC
Approx. 20V DC
YES
YES
NO
NO
NO
YES
NO
YES
YES
YES
NO
NO
NO
(1)
(1)
YES
YES
YES
YES
YES
YES
YES
DC 20V
Approx.
20V DC
NO
NO
NO
NO
NO
NO
(1)
Note (1) 1 phase is removed.
Inverter check before replacing the power supply fuse.
*
The remote controller’s LCD(“ WAIT ”)
display remains unchanged after waiting 2
minutes after the power is turned on.
Is the outdoor unit controller's
power fuse F5 (20A) blown?
Is the voltage at the secondary side
of the noise filter AC220/240V?
Are the wires connecting to the
noise filter board OK?
Is the indoor unit’s green LED
flashing?
Is the outdoor unit’s control red
LED flashing 2 times?
Are the wires connecting the indoor
and outdoor units connected
according to specifications?
The remote controller’s LCD (“ WAIT ”)
display remains unchanged after waiting 2
minutes after the power is turned on.
Is the outdoor green LED
flashing?
Is the indoor green LED
flashing?
Is the fuse (10A) OK?
Is the voltage on the outdoor unit’s
transformer secondary side (red –
red) 14 V?
Is the outdoor red LED
flashing 2 times?
Measure the voltage between 2/N and
3 of the indoor unit’s terminal block.
Are the wires connecting the indoor
and outdoor units connected according
to specifications?
Measure the voltage between 2/N and
3 of the outdoor unit’s terminal block.
Measure the voltage between 2/N and
3 of the outdoor unit’s terminal block.
Measure the voltage between 2/N and
3 of the indoor unit’s terminal block.
Power supply
fuse exchange
Noise filter
exchange
Indoor unit control
PCB defect
Indoor/outdoor unit control PCB
defect Remote controller defect
Remote controller wire
disconnection (Y)
Indoor unit control PCB
defect
Remote controller defect
Remote controller wire
disconnection (Y)
Connection wires are
faulty (disconnection)
Noise
Connection wires are
faulty (disconnection)
Noise
Connects
corrently
Repair the wires
connecting the indoor
and outdoor units.
Outdoor unit
control PCB
defect
Outdoor unit
control PCB
defect
Fuse
exchange
Transformer
defect
Outdoor unit
control PCB defect
Is the noise filter out of
phase or short circuited?
Is the indoor green LED
flashing?
Is the fuse on the indoor unit
control PCB OK?
Is the outdoor red LED
flashing 2 times?
Are the wires connecting the indoor
and outdoor units connected according
to specifications?
Measure the voltage between 2/N
and 3 of the outdoor unit’s
terminal block.
Measure the voltage between 2/N
and 3 of the indoor unit’s
terminal block.
Is the voltage on the outdoor
unit’s transformer secondary
side (red – red) AC15V?
Is the voltage between the red and
black wires in the remote
controller DC10~11V when the
remote controller is disconnected?
Remote controller does not display
after the power is turned on.
Are there any cracks or burnouts in
the power module or diode stack?
Is the reactor abnormal?
Nois filter
exchange
Fuse
exchange
Transformer
defect
The remote
controller
wires are
short
circuited.
Repair the
connection
lines.
Remote
controller
defect
Outdoor unit control
PCB defect
Connection wires are
faulty (disconnection)
Noise
The indoor/outdoor
control board is faulty.
The remote controller
is faulty.
The X or Z lines in the
remote controller are
disconnected.
Indoor unit
control PCB
defect
Replacement outdoor
unit control PCB
Reactor
exchange
Power supply
fuse exchange
Indoor unit control
PCB defect
Indoor unit control
PCB defect
Indoor unit control
PCB defect
Repair the wires
connecting the indoor
and outdoor units.
● 151~251 ● 301~601