-
249
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2
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 ”).
If the power supply breaker is turned on again in a short
time (within 1 minute) the message “ WAIT ” may
be displayed. In this case.Turn OFF the power supply
once and ON again 3 minutes later.
Note (1)
No
YES
YES
YES
DC 20V
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
NO
NO
NO
YES
YES
YES
(1)
(1)
Disconnect the breaker once,then after
3 minutes, turn the breaker on again.
Normal recovery
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 PCB 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?
Measure the voltage between 2/N and
of the outdoor unit’s terminal block.
Measure the voltage between 2/N and
of the indoor unit’s terminal block.
Exchange the
power supply
fuse
Exchange the
noise f ilter
Exchange the
noise f ilter
Indoor/outdoor unit control PCB
is defect
Remote controller wire (Y) is
disconnected
Exchange the
reactor
Connection wires are
faulty (disconnection)
Noise
Connects
corrently
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
of the outdoor unit’s
terminal block.
Measure the voltage between 2/N
and
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 anomalous?
Exchange
the fuse
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
PCB is faulty.
The remote controller
is faulty.
The X or Z lines in
the remote controller
are disconnected.
Indoor unit
control PCB
defect
Replace the outdoor
unit control PCB
Power supply
fuse exchange
Indoor unit control
PCB defect
Indoor unit control
PCB defect
Repair the wires
connecting the indoor
and outdoor units.
(1)
Models 151~251
