27
Indoor unit
operates. Outdoor
unit doesn’t
Outdoor unit
operates in
only Test
Run
operation.
Outdoor unit
doesn’t
operate even
in Test Run
operation.
Check room
temperature
thermistor.
Refer to
“Check of
outdoor unit”
on page 31.
Indoor unit
doesn’t receive
the signal from
remote
controller.
Refer to
“Check of
receiver P.C.
board” on
page 30.
OPERATION INDICATOR
lamp on the indoor unit is
flashing on and off.
Indoor unit doesn’t
receive the signal from
remote controller.
Also, OPERATION
INDICATOR lamp doesn’t
flash, when the
EMERGENCY
OPERATION switch is
Refer to “Check of
indoor electronic control
P.C. board” on page 31.
Cause:indoor/outdoor unit
connecting
Trouble of mis-wiring
Trouble of the serial signal
Cause:Indoor unit
2-time-Room
temperature/In
door coil
thermistor
trouble
Refer to
“How to check mis-
wiring and signal
error
(when outdoor unit
doesn’t work)”
on page 32.
w
1
6-time flash
2.5-second OFF
Cause:outdoor unit
6-time-Replace the
defrost thermistor
E
D
B
Check room temperature
thermistor. Refer to “Test
point diagram and
voltage” on page 33.
Refer to “Check of indoor
fan motor” on page 30.
Check indoor coil
thermistor. Refer to “Test
point diagram and
voltage” on page 33.
w
1<The case of the trouble of the serial signal>
When the power is turned off and then turned
on again, the indication shows “the trouble
of mis-wiring”.
2-time flash
2.5-second OFF
Start
1-time flash
C
A
(
11-2. Instruction of troubleshooting
When the remote controller
is pressed or when the
EMERGENCY OPERATION
switch is pressed, the fan
does not rotate with
OPERATION INDICATOR
